SR 2013-27 Stratigraphy offshore Taranaki Basin 2013-027.pdfseismic lines, calibrated to well stratigraphy, is being interpreted to establish the regional seismic stratigraphic framework,

© Institute of Geological and Nuclear Sciences Limited, 2013

ISSN 1177-2425 ISBN 978-1-972192-63-4

BIBLIOGRAPHIC REFERENCE

Roncaglia, L., Fohrmann, M., Milner, M., Morgans, H.E.G., Crundwell, M.P.,

2013. Well log stratigraphy in the central and southern offshore area of the

Taranaki Basin, New Zealand. GNS Science Report, 2013/27, 26p + enclosures.

L. Roncaglia, GNS Science, P O Box 30 368, Lower Hutt 5040, New Zealand

M. Fohrmann, OMV New Zealand Ltd, 10 Brandon Street, Wellington 6011, New Zealand

M. Milner, OMV New Zealand Ltd, 10 Brandon Street, Wellington 6011, New Zealand

H.E.G. Morgans, GNS Science, P O Box 30 368, Lower Hutt 5040, New Zealand

M.P. Crundwell GNS Science, P O Box 30 368, Lower Hutt 5040, New Zealand

GNS Science Report 2013/27 i

CONTENTS

ABSTRACT .......................................................................................................................... III

KEYWORDS ......................................................................................................................... III

1.0 INTRODUCTION AND SCOPE .................................................................................. 1

2.0 THIS REPORT AND RELATED PRODUCTS ............................................................. 1

3.0 PREVIOUS WORK ..................................................................................................... 2

4.0 MATERIAL AND DATA .............................................................................................. 3

5.0 NEW ZEALAND GEOLOGICAL TIMESCALE CALIBRATION .................................. 5

6.0 ADOPTED BIOSTRATIGRAPHIC SUBDIVISION ...................................................... 5

7.0 LITHOSTRATIGRAPHY ............................................................................................. 9

7.1 Pakawau Group (Suggate, 1956) .................................................................................. 9

7.1.1 Rakopi Formation (Thrasher, 1992) .................................................................. 9

7.1.2 North Cape Formation (Suggate, 1956) .......................................................... 10

7.2 Kapuni Group (Palmer, 1985) ..................................................................................... 11

7.2.1 Farewell Formation (Suggate, 1956) ............................................................... 11

7.2.2 Kaimiro Formation (Palmer, 1985) .................................................................. 12

7.2.3 Mangahewa Formation (Palmer, 1985) ........................................................... 12

7.3 Moa Group (King and Thrasher, 1996) ....................................................................... 13

7.3.1 Turi Formation (Palmer, 1985) ........................................................................ 13

7.4 Ngatoro Group (King, 1988a, b) .................................................................................. 14

7.4.1 Otaraoa Formation (Palmer, 1985) ................................................................. 14

7.4.2 Tikorangi Formation (Palmer, 1985) ............................................................... 14

7.4.3 Taimana Formation (King 1988a, b) ............................................................... 15

7.5 Wai-iti Group (King 1988a, b) ...................................................................................... 16

7.5.1 Manganui Formation (King 1988a, b) .............................................................. 16

7.5.2 Moki Formation (Lock 1985) ............................................................................ 17

7.5.3 “M2A” unit (informal) ........................................................................................ 18

7.5.4 “Sw sands”, Waiauan interbedded sandstone unit (this study, informal) ........ 19

7.5.5 ”Tt sand 1 and 2”, Tongaporutuan interbedded sandstone unit 1 and 2 (this

study, informal) ............................................................................................................ 19

7.6 Rotokare Group (Robinson and King, 1988) ............................................................... 20

7.6.1 Giant Foresets Formation (Pilaar and Wakefield, 1978) ................................. 20

8.0 ACKNOWLEDGMENTS ........................................................................................... 21

9.0 REFERENCES ......................................................................................................... 21

ii GNS Science Report 2013/27

FIGURES

Figure 1 Location map with location of the study wells. .............................................................................. 4

Figure 2 The figure illustrates the age relationship of laterally correlative lithofacies belts

distributed along a southeast to central west transect across of the Taranaki Basin .................... 7

ENCLOSURES

Enclosure 1 Well correlation panel: Cook-1, Cape Farewell-1, Fresne-1, North Tasman-1

Enclosure 2 Well correlation panel: Takapou-1, Pateke-2, Kiwi-1, Amokura-1, Tui-1, Maui-3

Enclosure 3 Well correlation panel: Kea-1, Maui-1, MB-P8, Maui-7, Maui-2, Maui-3

Enclosure 4 Well correlation panel: Kea-1, Moki-1, Maari-1, Maari-2, Moki-2A, Maui-4, North Tasman-1

Enclosure 5 Well correlation panel: Pukeko-1, Te Whatu-2, North Tasman-1, Tasman-1, Motueka-1,

Surville-1

GNS Science Report 2013/27 iii

ABSTRACT

As a result of a lithological, sedimentological and biostratigraphic study of well sections from the central-southern area of the Taranaki Basin (including the Maari, Maui and Tui Fields), the lithostratigraphic framework for the siliciclastic Late Cretaceous to Recent sediments of the area is revisited and interpreted in terms of wireline log signature and associated regional seismic reflectors. The Pakawau, Kapuni, Moa, Ngatoro, Waiti and Rotokare Groups of previously published lithostratigraphic schemes are adequate for a subdivision of the central area at formation level. The Manganui Formation is subdivided into three mudstone-dominated units: lower, mid and upper. Four new, stratigraphically independent, informal, sandstone units – the “M2A sand”, a Waiauan interbedded sandstone unit (“Sw sands”) and two Tongaporututuan interbedded sandstone units (“Tt sand 1 and 2”) – are identified and represent extentions of “Moki Formation” type facies and represent potential stratigraphic members of the Manganui Formation. Reference intervals are established in wells for all units and the description of their lithology, log characteristics, depositional environment, age and associated seismic reflectors are updated with details on well to well correlation.

KEYWORDS

Taranaki, stratigraphy, log, correlation, well, seismic, reservoir, petroleum.

GNS Science Report 2013/27 1

1.0 INTRODUCTION AND SCOPE

The mapping of seismic horizons and faults within the supra-basement Late Cretaceous to Recent sedimentary succession across the entire Taranaki Basin represents a main objective of the 4D-Taranaki (4DT) project currently being undertaken by GNS Science (Roncaglia et al., 2010; Fohrmann et al., 2012). As part of the project, a regional grid of seismic lines, calibrated to well stratigraphy, is being interpreted to establish the regional seismic stratigraphic framework, to provide a basis for detailed mapping in local areas. The central (CEN) and south inversion (SIV) areas are two offshore areas within the basin currently being mapped.

In open-file petroleum reports from the study areas, the stratigraphic nomenclature used for the Cretaceous to Recent sediments is often inconsistent. On a regional-scale evaluation, including different hydrocarbon-producing fields, the inconsistency leads to ambiguity. In order to improve consistency within the well data and correlate them with the seismic stratigraphy, the ages of the sediments and formation boundaries in selected wells have been revised and in some cases changed from those in the well completion report and occasionally also from those in the literature.

This report is the result of a reassessment of the regional litho- and biostratigraphy for the Late Cretaceous to Recent sediments in 25 exploration and appraisal wells (Fig. 1) from the CEN and SIV areas of the basin, following on from the framework outlined by Roncaglia et al. (2008), Bland et al., (2009) and Fohrmann et al. (2012) in Kupe area (KUP). The aims are to:

1. Revise the chronostratigraphic (age to well depth) database with respect to the New Zealand and international timescales, and directly apply this to the seismic interpretation, based on existing and new biostratigraphic (foraminiferal and palynologic) data from the study wells;

2. Establish log-based lithostratigraphic well correlations supported by the revised biostratigraphy and sedimentology, also in the form of a database directly applicable to the seismic interpretation.

2.0 THIS REPORT AND RELATED PRODUCTS

Key results are presented in the form of five correlation panels (Enclosures 1−5) which display a selection of the original wireline log data with the revised lithological and stratigraphic interpretation. The correlation is between reassessed boundaries of formal and informal lithostratigraphic units in each well, based on the wire-line log data, but it is guided by biostratigraphy and aided by seismic interpretation.

Preliminary versions of the stratigraphic interpretation presented in this report are available in digital form as well summary sheets in either ascii or WellCad format through the Petroleum Basin Explorer data portal (Roncaglia, 2010; Roncaglia et al., 2012; and Griffin and Roncaglia, 2013).

The depth of biostratigraphic samples, upper and lower stratigraphic boundaries presented herein (top and base of group/formation/member, New Zealand stage and international epoch) and paleobathymetric range data from the 25 wells are available for purchase as a database in ascii format from GNS Science (Roncaglia et al., 2013).

2 GNS Science Report 2013/27

3.0 PREVIOUS WORK

There is a rich literature on Taranaki surface and subsurface geology, with pioneering studies connected with regional mapping and petroleum exploration since the 19th century The Late Cretaceous and Cenozoic lithostratigraphy of the Taranaki Basin has been described in two major stratigraphic works. Palmer (1985) provided an overview of the structural elements of the basin and gave a description of pre-Miocene strata which, with some revision, is still used. King and Thrasher (1996) compiled a detailed lithostratigraphic subdivision and lithological description for the entire basin. They subdivided the siliciclastic Late Cretaceous, Paleogene and Neogene sediments into six major groups: the Pakawau, Kapuni, Moa, Ngatoro, Wai-iti and Rotokare Groups. The succession of major formations contained within these groups has formed the backbone of all subsequent lithostratigraphic schemes for the central and southern part of Taranaki and it is used in this report.

King et al. (1999) synthesised the knowledge of New Zealand’s sedimentary basin evolution (including Taranaki) within a highly-resolved chronostratigraphic framework to compare depositional successions between regions or basins and to document any widely-occurring patterns and events within the Cretaceous to Recent of the New Zealand subcontinent.

Kamp et al. (2002, 2004) and Vonk and Kamp (2004) presented a revised Neogene and Quaternary stratigraphy for the Wanganui, King Country and the eastern Taranaki basins. In these papers, they established the Whangamomona and Taihape Groups, abandoned the Rotokare Group and described two new Middle to Late Miocene formations (Otunui and Kiore). Their lithostratigraphic scheme also includes several new Late Miocene to Early Pliocene sandstone beds within the Matemateaonga Formation, promoted to the rank of members.

Anthony et al., (2006) summarised the lithostratigraphy of the Cretaceous to Recent sediments in the southern and central area of the basin based on observations by McBeath (1977) and King and Thrasher (1996). This 2006 scheme provides an overview of the formal and informal lithostratigraphic terminology which has been used by the industry for many years.

Following detailed analysis of seismic surveys, sedimentologic, faunal, geochemical, electrical logs and petrographic data covering the succession in southern, central and northern Taranaki, efforts were focused in establishing high-resolution sequence stratigraphic subdivisions in selected stratigraphic units within the Cretaceous to Neogene sediment package. The data are discussed in a series of publications from working groups at the University of Waikato and GNS Science (e.g. Hood et al., 2003; Hansen and Kamp, 2002, 2004, 2006; Naish et al., 2005; Proust et al., 2005; Higgs et al., 2010 a,b, 2012a).

Bland et al. (2009) and Fohrmann et al. (2012) provide an overview of the lithostratigraphic framework and nomenclature used in the Kupe area, which is the first area where detailed seismic mapping has been completed as part of the 4DT project. The authors provide a re-evaluation of the existing stratigraphic nomenclature in the Taranaki Basin in relation to the surrounding basins to the east (Wanganui) and north-east (King Country). In particular, they highlight problems encountered with the regional Neogene lithostratigraphy and introduce three new units in the Waiauan (late-Middle Miocene) to Tongaporutuan (early-Late Miocene) interval.


4.0 MATERIAL AND DATA

A total of 25 open-file offshore wells were selected in the study areas and are dealt with in this report (Fig.1). Nineteen key wells in the CEN area are selected to represent this area and the three hydrocarbon fields (Maari, Maui and Tui) located within it. Six wells in the SIV area are included as they have wireline log patterns and lithostratigraphic affinity with those from the CEN area in the stratigraphic interval studied. Other criteria for the selection of the wells were continuous stratigraphic succession, strategic location within the seismic mapping area, good core coverage and good quality biostratigraphic and sedimentologic data.

The well names are listed here alphabetically by area:

CEN area Amokura-1; Kea-1; Kiwi-1; Maari-1, -2; Maui-1, -2, -3, -4, -7; MB-P(8); Moki-1, -2A; North Tasman-1; Pateke-2; Pukeko-1; Te Whatu-2; Takapou-1; Tui-1.

SIV area Cape Farewell-1; Cook-1; Fresne-1; Motueka-1; Surville-1; Tasman-1.

The stratigraphic subdivision and the regional correlations herein represent the result of a re-evaluation of geophysical well logs and biostratigraphy integrated with sedimentological data from cores, sidewall cores (SWC) and cuttings and seismic data (2D and 3D). In addition to the information available in the published literature, several non-proprietary datasets were sourced from the New Zealand Ministry of Business, Innovation and Employment (New Zealand Petroleum and Minerals, Wellington) corporate databases (e.g., Petroleum Reports; Petroleum Wells) and GNS Science databases (e.g., Fossil Record Electronic Database FRED; GNS Petroleum Wells Paleontology Files; Core database of Higgs et al. 2012a; Offshore Taranaki seismic database of Milner et al., 2010).

The data used in this study from the wells listed above include:

Header information (ID, location, reference depths etc)

Deviation and checkshot surveys

Time to depth curves from Zhu et al. (2012)

Wireline logs (primarily gamma ray, caliper, spontaneous potential, sonic, resistivity, neutron and density logs)

SWC and cuttings samples

Mudlog, cuttings descriptions and final lithologic interpretation from wellsite

Existing biostratigraphic and paleobathymetric data, typically from benthic and planktic foraminifera, dinoflagellates, and spores and pollen

A selection of 2D and arbitrary lines from 3D surveys from the offshore Taranaki seismic database of Milner et al. (2010).

The biostratigraphic dating in the study is compared with the results of quantitative stratigraphy constrained optimisation (CONOP) in 7 of the wells (Cook-1; Fresne-1; Maui-3, -4; North Tasman-1; Takapou-1; and Tui-1) (Crampton et al., 2012). Also a revision of the biostratigraphy in Maui-4 published by Raine and Schioler (2012) provided helpful results for correlation of Cretaceous to Paleogene sediments in the basin. The revised well-log correlation resulted in an improved architecture and distribution of the lithostratigraphic units in the basin.


All depths mentioned in this report refer to measured depth (MD) in meters below rotary table or kelly bushing if not otherwise stated. When it is unclear from the well completion report which reference level is used for well depths, rotary table is assumed and depths given as MD in meters.

Figure 1 Location map with location of the study wells.


5.0 NEW ZEALAND GEOLOGICAL TIMESCALE CALIBRATION

The primary objective for the biostratigraphic review of the study wells was to generate a chronostratigraphic framework in order to aid log-based well correlation and thus the development of a regional correlation applicable to the seismic data.

New Zealand series and stages for the Cretaceous and Cenozoic are based on the ranges of selected mollusca, foraminifera, palynomorphs and environmental stable isotope events, in reference sections (Cooper 2004). For the Cenozoic, correlation of the New Zealand scheme with the Global Geochronological Scale (GGS), and calibration of boundaries in terms of millions of years, was presented in Cooper (2004) based on age calibration of the Geomagnetic Polarity Timescale and global stages and bioevents by Cande and Kent (1995) and Berggren et al. (1995). For the Cretaceous, correlation and calibration was based on Ogg et al. (2004). Calibration of global stages in the GGS is a continuing process, and two improved calibrations have been published by Gradstein et al. (2004, 2012). Calibration of the New Zealand stages was therefore revised by Hollis et al. (2010) and Raine et al. (2012) to bring them into agreement with the Gradstein et al. (2012) international timescale as well as with New Zealand work subsequent to 2004. The latter calibration is shown in Fig. 2 which shows the chronostratigraphic section through the southeast to central part of the Taranaki Basin. New Zealand stages have standard two or three-letter codes, which are used in the text and enclosures (e.g. Ar = Runangan Stage of the Arnold Series) (Fig. 2). All substages (early, mid, late) mentioned herein are given with lower case unless formally defined according to Cooper (2004).

6.0 ADOPTED BIOSTRATIGRAPHIC SUBDIVISION

Miospores (pollen and spores) are the principal means of correlation of New Zealand Cretaceous–Cenozoic terrestrial and paralic strata in subsurface deposits. In the same stratigraphic interval, dinoflagellate cysts are powerful tools for subdivision in shallow marine to offshore depositional settings. Benthic foraminifera have historically been the most important fossil group for inter-basinal correlation of New Zealand marine sediments. Cenozoic marine strata and many of the Cenozoic stages were based primarily upon them. Ranges of Paleogene foraminifera are also documented in Cooper (2004). Planktic foraminifera are less abundant in the geological record in New Zealand, but important for local, high-resolution and global correlations (Crundwell 2004, Crundwell and Nelson 2007).

New Zealand stage and international epoch boundaries always mark the top or base of a zonal interval. In this report, the upper boundary of a New Zealand stage in a well section is marked by the highest stratigraphic record of the requisite key event in the well samples. However, as the key events most likely occur in the unsampled interval between the samples of a well section, the positions of stage boundaries have an uncertainty corresponding to the sampling resolution in the borehole. Also, for cuttings samples, the depth given herein is that of the base of the cuttings sample interval. This means that an additional error interval for any event identified on the basis of cutting samples equals the thickness of the cuttings sample interval (typically 5–15 m) above the biostratigraphic event in question.


Figure 2 The figure (modified from Anthony et al., 2006) illustrates the age relationship of laterally correlative lithofacies belts (lithostratigraphic units) distributed along a southeast to central west transect across of the Taranaki Basin. The study area is highlighted in the red frame. Twenty-six third order allostratigraphic sequence-bounding horizons mapped as part of the 4DT project in this area are labelled K90-80 for Cretaceous, P60-10 for Paleogene and N80-10 for the Neogene and Pleistocene. This chronostratigraphy is correlated to the NZ Geological Timescale according to the calibration of Raine et al. (2012). For comparison, the sequence bounding horizons used by Todd Energy and STOS are illustrated in the figure.


7.0 LITHOSTRATIGRAPHY

This section describes the lithology, wireline log characteristics, depositional environment, age and associated seismic reflectors of the sediment bodies encountered in the study wells. The lithostratigraphic subdivision and nomenclature used herein follows that of King and Thrasher (1996), with modifications after King et al. (1999), Kamp et al. (2004), Vonk and Kamp (2008) and Fohrmann et al. (2012) (Fig. 2). Further information on authorship, description and history of most of the lithostratigraphic units mentioned may be found in the New Zealand Stratigraphic Lexicon database available through the website of GNS Science. A few of the lithostratigraphic units used in this report have not previously been used in well completion reports and in the literature; these units are outlined below and remain informal.

7.1 PAKAWAU GROUP (SUGGATE, 1956)

The Pakawau Group is a Late Cretaceous coal-bearing succession of non- to shallow-marine origin that is mapped across the southern and central areas in Taranaki (King and Thrasher, 1996). It unconformably overlies Paleozoic metasedimentary and Cretaceous plutonic basement rocks (Bishop, 1971) in 8 of the study wells (Amokura-1; Cape Farewell-1; Kiwi-1; Maui-2, -4; North Tasman-1; Pukeko-1; Takapou-1). In most of the remaining wells, basal sediments belong to the overlying Kapuni Group. It is overlain by Cenozoic marine and non-marine sediments of the Moa and Kapuni Groups respectively. The Late Cretaceous group is subdivided into the Rakopi and North Cape Formations defined from seismic reflection mapping offshore and from lithofacies character in wells and outcrops (northern South Island) (Thrasher, 1992). A detailed description of the sedimentology and potential reservoir attributes of the formations is given by Higgs et al. (2010a).

7.1.1 Rakopi Formation (Thrasher, 1992)

Reference well in study area: Cape Farewell-1, 1543–2817 m MD (Enclosure 1).

Lithology: The Rakopi Formation consists of non-marine coal measures whereas the North Cape Formation is dominated by shallow-marine lithofacies (King and Thrasher 1996) although the latter also contains some marine-influenced coal measures. The Otimataura Conglomerate Member (Bishop, 1971, sensu King and Thrasher, 1996; Cape Farewell-1) represents the basal part of the Rakopi Formation in the SIV area, which includes the Pakawau Sub-basin. In the reference well, this member consists of schist breccia with quartzose grains in a sandstone matrix with minor laminations of coal and mudstone (Carter and Kintanar, 1987). It is exposed locally onshore and was penetrated in the Cape Farewell-1 well at 2694–2810 m.

Log characteristics: On the petrophysical well logs, the unit is characterised by a succession of high-amplitude gamma ray oscillations, which become increasingly closely-spaced upwards. In the lower part of the formation (Cape Farewell-1, 2210–2694 m), the sandstones are best identified on the density log where they produce a blocky pattern with density values significantly lower than those of the siltstones beneath and above. The sandstone can also be identified from a combination of the density and neutron logs, as the presence of pure sandstone results in a cross-over of the two curves. The part of the Rakopi Formation richest in coal (Cape Farewell-1, 1597–2210 m) is characterised by highly serrate GR signatures which reflect the heterolithic nature of the interbedded sandstone, siltstone, coal and conglomerate lithofacies. Thrasher (1992) defined the type section of the formation in Cape


Farewell-1, with upper boundary at 1160 m based on seismic interpretation. In this study, the upper boundary of the unit is tentatively placed at 1543.1 m based on wireline log (gamma ray, self-potential and acoustic) pattern and correlation to Cook-1 (Enclosure 1).

Depositional environment: Based on Browne et al. (2008), the formation was deposited in fluvial floodplains periodically transgressed by marine incursions.

Age: Haumurian (Mh), Campanian–Maastrichtian, Late Cretaceous.

Associated seismic reflectors: K78 or top basement form lower boundary; K80, upper boundary.

Correlation: Stratigraphic correlation of the Rakopi Formation across the study areas is difficult due to a large thickness variation, large (>10 km) distances between the study wells and the presence in the study area of Taranaki Basin of a number of major normal faults. The latter are the result active Late Cretaceous rifting t (King et al., 1999). In the SIV and CEN areas, the Rakopi Formation correlates with the PM2 miospore zone as in the NW Nelson onshore sections (Browne et al., 2008; Higgs et al., 2010a); however, a study by Raine and Schiøler (2012) in the coal-bearing sediments of the Rakopi Formation in the North West Platform area of the basin shows correlation of the lower part of the unit there with the PM1b miospore zone of Early Haumurian (Campanian) age, which is also the age of the formation in the Rimu and Kauri southern Taranaki onshore wells.

7.1.2 North Cape Formation (Suggate, 1956)

Reference well in study area: Cook-1, 1414–2251 m MD (Enclosure 1).

Lithology: The formation is characterised in both outcrop and wells by light grey to brownish carbonaceous sandy silt and silty sands occasionally micaceous, pyritic and feldspathic, although conglomerates and coals occur locally. Higgs et al. (2010a) identified that coaly sediments commonly occur throughout the formation, and therefore that recognition of lower and upper coaly members, the Wainui Member (e.g. in Maui-4) and the Puponga Member (e.g. in Fresne-1) has no stratigraphic significance within the Late Cretaceous interval.

Log characteristics: By comparison with the underlying unit, the marine parts of the North Cape Formation are characterised by steady GR log profile with an abrupt transition from the coal-bearing Rakopi Formation. In wells where silty facies dominate the North Cape Formation, the sonic log pattern is overall stable with slightly decreasing readings upwards from the base to the top of the formation.

Depositional environment: Shallow marine, paralic and terrestrial environment in the study area of the basin.

Age: Late Haumurian (Mh), Late Maastrichtian, Late Cretaceous.

Associated seismic reflectors: K90, lower boundary; P10, upper boundary.

Correlation: In the CEN area, the North Cape Formation correlates with the Late Maastrichtian Alterbidinium acutulum and Manumiella druggii dinoflagellate zones as in the NW Nelson onshore sections (Raine and Schiøler, 2012).


7.2 KAPUNI GROUP (PALMER, 1985)

7.2.1 Farewell Formation (Suggate, 1956)

Reference well in study area: Tui-1, 3485–3893 m MD (Enclosure 2).

Lithology: Interbedded fine to coarse-grained sandstones and siltstone. Three informal stratigraphic units (originally from Maui Field informal nomenclature) have been used in this study: the stratigraphically lower “F and E sands” (Tui-1, 3663–3893 m) which consist predominantly of grey, fine to coarse grained, loose sandstones interbedded with brown grey siltstones; and the “E shale” (Tui-1, 3485–3663 m) dominated by brownish grey to light greenish siltstones with occasional very fine to fine, quartz-rich, interbedded sandstones. The E sands coincides with the interval identified by Pollock and Crouch (2005) as “Tane Member’ in the Maui and Tui fields area. It is an heterolithic interbedded unit which includes interbedded sandstones, siltstone and musdstones with variable coal.

Log characteristics: The lower part of the Farewell Formation (“F and E sands”) is characterised by on overall unstable gamma-ray log signature whereas the upper part (E shale) has a more stable signature and higher average readings. This change in gamma-ray log signature coincides approximately with the change in lithologies between the two units in the study wells. In most wells from the Tui and Maui field areas, a pronounced gamma ray peak occurs within the upper part of the formation (E shale). In Tui-1, this peak (at 3565.5 m) marks a change from Teurian (Late Paleocene) light grey, soft, non-calcareous siltstones with glauconitic sandstones, to Waipawan (Early Eocene) lithologies dominated by brownish grey siltstones. It is inferred that this peak marks an unconformity at the Paleocene–Eocene boundary in this part of the basin. It is interpreted to represent a maximum flooding surface (MFS) within the E shale unit and it occurs in all study wells in the central part of the basin (Enclosure 2). The sonic readings are overall stable from the base to the top of the formation with the exception of numerous high-velocity peaks that suggest the presence of cemented layers. The Farewell “F and E sands” interval can also be recognised from a combination of the bulk density and neutron logs as the presence of pure sandstones results in a cross-over of the two log curves.

Depositional environment: In the study area the sandstones are deposited by north to northwest draining fluvial system developed in a valley controlled by the Manaia and Cape Egmont faults and by the Wakamarama and Kahurangi faults in the Pakawau sub-basin (SIV). Palynological analysis indicate that the Paleocene part of the unit was deposited in very proximal, heterolithic shelf with bottom conditions spanning fully oxic to anoxic (Strogen et al., 2010).

Age: Teurian–Waipawan (Dt–Dw), Paleocene–Early Eocene.

Associated seismic reflectors: P10, lower boundary; P20, upper boundary.

Correlation: This is the lowermost unit of the Kapuni Group; in the CEN and SIV areas it unconformably overlies the marginal marine strata of the North Cape Formation. In the CEN area, the Farewell Formation “F and E sands” and the lower part of the E shale interval correlate with seven dinoflagellate interval zones (NZDP2 to NZDP8 of Crouch, 2010) spanning the Early to Late Teurian (Strogen et al., 2010). In the Tui Field area, the occurrence of planktonic foraminifera Bigenerina burri and Globanomalina wilcoxensis in the upper part of the “E shale” interval indicates a Waipawan age (Morgans, pers. comm. 2012).


In the SIV and CEN areas, the Farewell Formation correlates with the PM3 miospore zone (Pollock and Crouch, 2005).

7.2.2 Kaimiro Formation (Palmer, 1985)

Reference well in study area: MB-P8, 3190.5–3390.8 m MD (Enclosure 3).

Lithology: The Kaimiro Formation (informally “D sands”) is dominated by sandstones of two types: (1) medium to coarse grained, moderately to well sorted, quartz-dominated sandstones; (2) dark yellow brown to brownish grey, fine to medium grained, variably argillaceous sandstones. Other lithologies include dark, brownish grey, non-calcareous siltstones, carbonaceous claystones and coal.

Log characteristics: The Kaimiro Formation has an overall blocky gamma-ray log signature and it is present in the northern part of the study area. In the reference well, its lowermost part (3390.8–3292 m) can be split into a number of smaller units with blocky or increasing-upwards gamma-ray log signatures separated by gamma-ray peaks. In comparison, the overlying sandstones (3292–3271 m) display a more stable, low gamma-ray log pattern with few spikes, and they are overlain by a siltstone-dominated interval (3271–3253 m), characterised by higher gamma-ray readings. The uppermost part of the formation (3253–3190.5 m) is characterised by 15–20 m thick units showing a blocky, increasing-upwards gamma-ray signature, suggesting fining upwards sand bodies.

Depositional environment: Based on Higgs et al. (2012a) the formation deposited across a broadly defined shoreline and coastal plain and represents marginal marine to lagoonal, low energy depositional environment.

Age: Waipawan–Heretaungan (Dw–Dh), Early–Mid Eocene.


Correlation: Precise dating and correlation of laterally equivalent strata within the Eocene reservoir fairway in the Taranaki Basin is mainly based on local miospore zonations (Raine 1984, 2004). This is due to the dominance of coastal plain deposits and scarcity of intercalated marine sediments in the formation. In the CEN area the Kaimiro Formation correlates with the MH1 miospore zone (upper Waipawan to Porangan) as in the onshore Taranaki boreholes (Higgs et al., 2012a).

7.2.3 Mangahewa Formation (Palmer, 1985)

Reference well in study area: Maui-4, 2030–2265.5 m MDRT (Enclosure 4).

Lithology: Interbedded sandstone, siltstone carbonaceous mudstone and coal; locally stacked sandstone. A segment (c. 280 m thick) of Mangahewa Formation (informally C sands) is encountered in the CEN part of the Taranaki Basin where it lies unconformably over the Farewell Formation and it is overlain by the Turi Formation (C shale). Historically, the Mangahewa Formation nomenclature was restricted to coal measure-dominated facies. However, King & Thrasher (1996) expanded this definition of the formation to encompass all terrestrial and marginal marine lithofacies of Middle to Late Eocene age, resulting in subdivision into Mangahewa terrestrial facies and Mangahewa coastal facies. The Mangahewa Formation in the CEN area is dominantly coastal facies and consists of sandstone with interbedded siltstone and coal.


Log characteristics: In Maui-4 and other CEN area wells (Maari-1, Moki-1 and Kea-1) mainly in the southern part of the study area, the formation is well defined on the gamma-ray log by a blocky pattern with intermediate to low values. This pattern differs from the steadier and generally higher gamma-ray readings of the Farewell Formation which is unconformably overlain in this area by the Mangahewa C sands. A gradual upward decrease in gamma-ray response is observed in the upper part of the Mangahewa Formation and reflect grain-size change, judging from core examination (Higgs et al., 2012b). The presence of clean sands is well outlined by the density and neutron logs cross over. The density log shows a blocky pattern with very low values for the Mangahewa Formation coals and relatively higher values for the sands.

Depositional environment: Lower coastal plain and marginal marine environment

Age: Porangan to Kaiatan (Dp–Ak), Mid to Late Eocene.


Correlation: Similarly to the Kaimiro Formation, dating and correlation is based on miospore zonations (Raine 1984, 2004). In the CEN area the Mangahewa Formation correlates with the MH2-MH3 miospore zones (Porangan to Kaiatan).

7.3 MOA GROUP (KING AND THRASHER, 1996)

In the Taranaki Basin, the Moa Group represents fully marine deposits of Paleocene–Eocene age, which are laterally equivalent and represent marine correlatives of the marginal to shallow marine deposits of the Kapuni Group (King & Thrasher, 1996). The former is mostly composed offshore of marine mudstones of the Turi Formation. The Eocene members of the Turi Formation interfinger with and divide the Kapuni Group sections. The informal name “D shale” correlates with the Omata Member of the Turi Formation in the study area.

7.3.1 Turi Formation (Palmer, 1985)

Reference well in study area: Pateke-2, 3047–3414 m MD (Enclosure 2).

Lithology: Micaceous, carbonaceous, moderately to non-calcareous, dark grey to brown mudstone; pyrite and glauconite occur locally in the formation.

Log characteristics: The Turi Formation is characterised by an overall stable gamma-ray and sonic log motif with a similar gamma-ray response to that displayed by the underlying “E shale” interval of the Farewell Formation and generally equal or lower than the overlying Otaraoa Formation. The sonic readings increase slightly upwards from the base to the top of the Turi Formation in the N–S transect between Kea-1 and North Tasman-1 (Enclosure 4).

Depositional environment: Shelf to bathyal settings within a gradually deepening basin to the north and northwest (King and Thrasher, 1996).

Age: Late Teurian (Dt) to Runangan (Ar), latest Paleocene to Late Eocene.


Correlation: The Turi Formation is the lateral marine equivalent of the terrestrial to shallow marine deposits of the Kapuni Group, which was deposited in nearshore conditions. In the


CEN area, the formation spans the interval from the dinoflagellate Paleocystodinium golzowense Zone to the Deflandrea phosphoritica Zone, MH1 to MH3 miospore zones.

7.4 NGATORO GROUP (KING, 1988A, B)

7.4.1 Otaraoa Formation (Palmer, 1985)

Reference well in study area: Kea-1, 2901–2925 m MD (Enclosures 3−4).

Lithology: The unit consists of dominant calcareous siltstone and mudstone with intercalated sandstone (Short and van Rijen, 1963; Palmer, 1985; King and Thrasher, 1996). The interval 2913–2925 m in Kea-1 is characterised by fine to coarse grained, light brown, calcareous, highly glauconitic sandstone which correlates to the Matapo Sandstone Member (Palmer, 1985). The type area of the formation is the interval from 3250–3472 m MD in the onshore Mangahewa-1 well.

Log characteristics: In wells where the sandstone facies of the basal Matapo Sandstone Member occurs (Enclosures 3–5), the gamma ray and sonic patterns can be subdivided into two distinctive intervals: the bipartite log pattern reflects the succession of glauconitic-dominated sandstone by a siltstone to mudstone-dominated interval. A very pronounced GR spike typically characterises the upper part of the Matapo Sandstone Member and the transition to the siltstone deposited above. Both intervals have a widespread distribution in the study area and they have been recognised in the Tui, Maui, Maari and Kupe fields. Although fluctuating, the gamma-ray readings in the siltstone dominated facies of the Otaraoa Formation have equal or higher mean values that those of the underlying Turi Formation. On the other hand, the sonic readings are consistently lower than in the Turi in this part of the formation.

Depositional environment: Based on the benthic foraminiferal assemblage, the depositional setting of the Otaraoa Formation is deeper than upper slope (>400m) to bathyal (<2000m). , However, the basal Matapo Sandstone are shelfal. A later correlative to the Otaraoa Formation, the Abel Head Formation occurs to the southern part (SIV) of the basin and represent shallow marine facies (i.e. Surville-1).

Age: Late Whaingaroan to Waitakian (Lwh–Lw), Oligocene to Early Miocene.


7.4.2 Tikorangi Formation (Palmer, 1985)

Reference well in study area: Maui-1, 2482–2627 m MD (Hood et al., 2003) (Enclosure 3).

Lithology: The unit consists of white to pale grey firm to hard argillaceous limestone highly calcareous, interbedded with pale grey soft claystone. The formation was defined by Palmer (1985) with type section the interval from 3213–3250 m MD in Mangahewa-1. However, Hood et al. (2003) find the type section unsatisfactory because it lacks core material and the lithologic decriptions for the unit are from ditch-cutting samples taken every 3 m. In their study, they identify two types of megafacies within the formation: foredeep (Taranaki Peninsula) and basinal megafacies (offshore) and formally designate the onshore well Waihapa-5, 2986 to 3196 m MD as the new reference section for the foredeep megafacies - because of the availability of >112 m of core material - and the well Maui-1, 2482 to 2627 m MD (also included in this study) as the new reference section for the basinal megafacies, for which c. 9 m of core material is available. The foredeep megafacies are characterised by


nine lithostratigraphic sub-units that are correlatable based on wireline logs. Based on Hood et al. (2003), the Tikorangi interval is thickest in the onshore well Waihapa-1 (232 m, foredeep megafacies in the central Taranaki Peninsula) and Ariki-1 and Kora-1 offshore wells (226 and 215 m respectively, basin megafacies in the Northern Graben area). The formation is thin to absent in the eastern margin of the Northern Graben, the western part of the Taranaki Peninsula and in the southern part (Kupe field and SIV areas) of the Taranaki Basin, where the Otaraoa Formation forms its lateral equivalent.

Log characteristics: The Tikorangi Formation is generally characterised by conspicuously low gamma ray readings, high density and acoustic values, compared to the enveloping siliciclastic sediments. The limestone may also be identified from a combination of the neutron porosity and bulk density logs plotted on compatible scales, since the presence of ‘clean limestones’ result in a cross-over of the two log curves (Enclosure 3).

Depositional environment: The carbonates of the Tikorangi Formation represent deep-water sedimentation in a distal shelf to slope-basin setting, characterised by periods of sediment starvation (King and Thrasher, 1996).

Age: Late Whaingaroan (Lwh) to Otaian (Po), Late Oligocene to Early Miocene.


7.4.3 Taimana Formation (King 1988a, b)

Reference well in study area: Takapou-1, 2899.3–2927.8m MD (Enclosure 2).

Lithology: In the study region, the Taimana Formation represents a strongly calcareous claystone, dark to medium brown to medium grey, soft to firm and blocky with minor amount of grained silt. Thin lenses of white to light grey, firm, blocky limestone occasionally occur in the formation (e.g. in Takapou-1). The Taimana Formation conformably overlies the Tikorangi Formation in all study wells, except in Te Whatu-2 and North Tasman-1. In these two wells, it unconformably overlies the Otaraoa Formation. The formation is conformably overlain by fine-grained terrigenous-dominated rocks of the Manganui Formation (Wai-iti Group). This top is erosionally truncated in southern parts of the basin, to the eastern side of the Manaia Fault due to late Neogene uplift and erosion. This boundary corresponds by definition to the top of the Ngatoro Group (King and Thrasher, 1996) and represents a sequence boundary that separates the latter and the Wai-iti groups. This upper contact is evident in seismic reflection but is less obvious in wells. A down-hole increase in calcium carbonate content is used to differentiate the unit from the overlying Manganui Formation during drilling operations.

Log characteristics: The formation is characterised by overall low (48–66 GAPI) gamma log readings. The combination response of the neutron porosity and bulk density logs plotted on compatible scales shows a slightly positive (+ve) separation, which remains constant throughout the unit and does not results in a cross-over in most wells, except for Tui-1. The acoustic log response is steady: there is an upward decrease in acoustic readings from the underlying Tikorangi Formation, and none to very little change in the transition to the overlying Manganui Formation.

Depositional environment: The formation was deposited in variable water depths in upper bathyal (400–600 m) to outermost shelfal (150–200 m) setting.


Age: In the Taranaki Basin the Taimana Formation is of Waitakian (Lw) – Lillburnian (Sl), latest Oligocene to Middle Miocene age. In the study area, top and basis of the unit are strongly diachronous, with older sediments deposited to the south east and younger sediments to the north-west. Late Waitakian to Otaian (Po) (Early Miocene) age was assigned to the formation in the study area.

Associated seismic reflectors: P60, lower boundary; the upper boundary is approximated by the N10 reflector in the south (North Tasman-1) to south-eastern part of the study area and by the N15 reflector in the central and north-western part (Maui-3, -4 and Takapou-1).

7.5 WAI-ITI GROUP (KING 1988A, B)

7.5.1 Manganui Formation (King 1988a, b)

Reference well in study area: Kea-1, 2750–2574 m MD (lower unit), 2208–1689.3 m MD (mid unit), 1670.1–1047 m MD (upper unit) (Enclosures 3−4).

Lithology: The formation consists of a mudstone-dominated succession occasionally characterised by sandy siltstones. In the central part of the Taranaki Basin this unit conformably overlies the Taimana Formation. In this report, we revise the informal two-fold subdivision of King and Thrasher (1996) and Roncaglia et al. (2008) and the formation is subdivided informally into three units (lower, mid and upper) based on lithology, seismic character and age.

Stratigraphically, in the CEN area, the lower part of the formation consists of the interval above the Taimana Formation and below the intercalated Moki Formation (Altonian–Lillburnian, Pl–Sl) (Fig. 2). Discrete sandstone units and thin sandstone stringers occur throughout the mid part of the formation, which is not younger than Waiauan (late Middle Miocene); this middle unit is delimited by the upper boundary of the Moki Formation at the base and the lower boundary of an interbedded sandstone unit of Waiauan age (“Sw sands”) at the top (Fig. 2). The mid Manganui interval is characterised by an increase in calcareous mudstone lithofacies (occasional limestone stringers were recorded in Kea-1) with stringers of very fine grained sandstones and siltstone and traces of lignite. Increase in carbonate was interpreted to reflect a period of subsidence and sediment starvation in the Waiauan (Vonk and Kamp, 2008). The upper part of the Manganui Formation consists of the interval between the top of the Waiauan interbedded sandstone unit and the base of the Giant Foresets Formation. In Kea-1, the sediments in this interval are characterised by light to medium grey claystone grading to siltstone with rare, thin and fine grained sandstone stringers below 1430 m.

Log characteristics: The three-fold Manganui Formation is characterised by an overall stable gamma-ray and acoustic log motif with a higher gamma-ray response than that displayed by the underlying Taimana Formation and the overlying Giant Foresets Formation. The acoustic readings decrease slightly upwards from the base to the top of the formation; in the upper part of the formation the curve is characterised by a blocky log signature with low values.

Depositional environment: In the study area, the formation was deposited in upper slope to lower bathyal environments (400-2000 m) usually deepening towards the west. To the south (North Tasman-1) and east (Kupe area, Roncaglia et al., 2008) over the Manaia anticline, lower and older parts of the Manganui Formation were deposited in a deep environment (upper slope to mid bathyal, 400–1000 m), whereas upper parts of the unit accumulated in


shelfal to upper slope environment (150–400 m). Paleo-water depths in the west also shallowed with time, as the shelf prograded to the west/northwest.

Age: Foraminiferal faunas from the central part of the basin indicate that the revised Manganui Formation in the study area has an Otaian–Tongaporutuan (mid-Early to Late Miocene) age. The lower Manganui Formation is Otaian–Altonian (mid to late-Early Miocene); the mid part of the formation is Clifdenian–Waiauan (Middle to early-Late Miocene), and the upper part is Waiauan–Tongaporutuan (Late Miocene). In the north and distal part of the basin (e.g. Tane-1 and Taranga-1), there is evidence of younger (Kapitean–Opoitian, Late Miocene to Early Pliocene) sediments which have been assigned to the Manganui Formation.

Associated seismic reflectors: N15 forms the lower boundary and N50 forms the upper boundary of the Manganui Formation in the study area. The upper boundary of the lower does not correspond to a seismic reflector and coincides with the base of the Moki Formation in the study area. The upper boundary of the mid Manganui Formation is poorly approximated by the N30 reflector. In the study area, the lower part of the formation is characterised by moderate- to low-amplitude laterally continuous reflectors. The mid Manganui sequence is characterised by moderate to high amplitudes and laterally continuous reflectors. The upper part is commonly very thick (up to 1100 m) and characterised by patchy reflectivity and discontinuos reflectors.

Correlation: To the east and south-east (Kupe area), the mid Manganui unit can be correlated with the time-equivalent Otunui Formation which represents a more proximal facies. The latter, which was first described by Gerritsen (1994) is a mudstone-dominated Middle Miocene (primarily Waiauan and not older than late Lillburnian) succession outcropping in the Ohura area of King Country Basin. The upper Manganui Tongaporutuan part of the formation is laterally equivalent with the Mount Messenger Formation, which occurs in the north-west part of the basin including the Taranaki peninsula. The upper Manganui is also lateral equivalent of the Kiore and Urenui formations (Vonk and Kamp, 2008), which occurs in the east of the CEN area and in the south-east part (Kupe area) of the basin (Fohrmann et al., 2012).

7.5.2 Moki Formation (Lock 1985)

Reference well in study area: Moki-1, 1303–1830.5 m MD (Lock, 1985) (Enclosure 4).

Lithology: The unit consists of sandstones and sandy sequences with interbedded mudstone and siltstone and limestone stringers. The sandstones are commonly fine to very fine grained and argillaceous.

Log characteristics: The Moki Formation is characterised by a conspicuous blocky signature on the gamma-ray and acoustic logs (Enclosure 4). Gamma-ray readings are prodominantly lower than those of the enveloping Manganui Formation (lower and mid) mudstones. The Moki can also be recognised from a combination of the density and neutron logs as the presence of clean sandstones results in a cross-over of the two log curves.

Depositional environment: The formation represents a turbiditic fan complex initially developed during the late Altonian (late Early Miocene) in the vicinity of the Maui-4 and Moki-1 wells on the slope to basin-floor, and well-established during the Clifdenian (early Middle Miocene) and centered around the southern and central wells in the study area (Grain et al., 2008). Evidence of Mid Miocene deep water fan lobe switching is observed on the seismic


data together with progradation of the system north- and westward during the early Lillburnian.

Age: Based on King (1988a, b) and King and Thrasher (1996), the formation is restricted to sandstone sequences of late Altonian to Lillburnian (Pl–Sl), Early to Middle Miocene age developed in the Maari and Maui field areas and present in the onshore area (e.g., Te Kiri-1, New Plymouth-2). This age is confirmed by the biostratigraphic results and correlation presented in this study.

Associated seismic reflectors: No seismic reflector is associated with the lower boundary; The N30 reflector forms the upper boundary (e.g. Maui-3, -4, North Tasman-1, Takapou-1 and Tui-1). The unit is characterised by high-amplitude reflectors throughout the CEN area.

7.5.3 “M2A” unit (informal)

Reference wells in study area: Moki-1, 1237–1248.5 m MD; Moki-2A, 1281–1284 m MD (Enclosure 4). The informal unit name has been used extensively in well completion and petroleum reports in the Maari Field.

Lithology: Light to medium light grey, very fine to fine-grained sandstones interbedded with minor siltstone to silty claystone. The sandstones are well sorted, subrounded, slightly calcareous at places, with traces of mica and carbonaceous specks. Traces of pyrite are reported in the claystone fractions.

Log characteristics: The M2A unit is well identified on the gamma ray and density logs where it produces a blocky and spiky pattern with values significantly lower than those of the mudstones (mid Manganui) beneath and above. In four of the study wells (Kea-1, Maui-7, North Tasman-1 and Tasman-1) (Enclosures 3−5), on the gamma ray log the M2A sandstones are characterised by upward decreasing values suggesting the upward increase of siltstone or claystone fraction within the unit.

Depositional environment: The M2A interval is extensive across the CEN region and correlated throughout. While the sandstone may represent a distal fringe portion of a fan system younger than the Moki, which has a better development to the north, it could also be the result of the renewed northward progradation of the Moki fan complex after a period of quiescence characterised by lack of sand supply and dominant mudstones deposition (mid Manganui Formation). In the latter hypothesis, the M2A unit will represent the base of a younger slope fan. In the southern-eastern wells (Motueka-1) a lateral sandy facies equivalent correlative to the Moki Formation and M2A unit has been recorded (Enclosure 5); this unit is shallow marine and probably represents a separate lithostratigraphic member.

Age: In the study area the M2A sand is of late Lillburnian age, Middle Miocene.

Associated seismic reflectors: In the northern part of the study area, the top of the unit is associated with the N35 reflector (e.g. Takapou-1).

Distribution: In the CEN area, the unit has been observed in all northern wells from north to south (Enclosures 2 and 4) and consistently occurs 45–85 m above the top of the Moki Formation with two exceptions: in the Maui-1 and -7 wells, where the M2A unit is tentatively correlated with a sandstone layer 134 m and 34 m above the Moki Formation, respectively. In this study the M2A unit is inferred to be laterally continuous.


7.5.4 “Sw sands”, Waiauan interbedded sandstone unit (this study, informal)

Reference well in study area: Kea-1, 1670.1–1689.3 m MD (Enclosures 3−4).

Lithology: In the reference well, the unit consists of mass-emplaced, light to medium grey, fine to medium-grained, micaceous sandstones interbedded with calcareous siltstones and clay, with traces of carbonaceous and lignitic material. The unit becomes less muddy in the upper half of its interval. The upper part consists largely of clean, medium-grained sandstones with mudstone interbeds becoming frequent towards the top. While it is clearly sandstone-dominated in the reference area, the unit is characterised by an increase in mudstones and claystones towards the south (Moki-2A, Maui-4 and North Tasman-1) and the north (Maui Field area) of the study area.

Log characteristics: The Waiauan interbedded sandstone unit has an overall blocky gamma-ray and density log signature. In the reference well, its lowermost part (1677–1689 m MD) is characterised by stable gamma ray values with no spikes. In comparison, the overlying sandstones (1670.1–1677 m MD) display a higher gamma ray log pattern, which can be split into a number of small units with increasing-upwards gamma-ray log signatures separated by peaks. The latter suggests fining upwards sand bodies. Average density readings are usually low in this interval.

Depositional environment: No cores have been taken in the Waiauan sandstone unit from the study wells, but the sandstones were probably deposited from concentrated gravity flows in deep (>600 m water depth) slope to upper bathyal settings, based on log similarity with the Moki Formation and the M2A unit in the area.

Age: By definition the age of this unit is restricted to the Waiauan (late-Mid to early-Late Miocene).

Associated seismic reflectors: No mapped reflectors are associated with the base of this unit. In the central and southern part of the study area the top of this unit is associated with the N40 reflector (i.e., Maui-3 and -4).

7.5.5 ”Tt sand 1 and 2”, Tongaporutuan interbedded sandstone unit 1 and 2 (this study, informal)

Reference well in study area: Takapou-1, 2560.2–2576 m MD (Tt sand 1), 2324.5–2363.5 m MD (Tt sand 2).

Lithology: These units represent the youngest in a series of sandstone bodies spanning the Late Altonian to Tongaporutuan. The interval is dominanted by sandstones with mudstone interbeds, and represents the offshore equivalent to the Mount Messenger Formation (Hay, 1967) in the central area of the basin. The latter formation was deposited over the northern part of the basin and well exposed onshore along the north Taranaki coast between Pariokariwa Point and the Mokau River, where it reaches a thickness of about 850 m (King and Thrasher, 1996). While sandstone interbeds of Tongaporutuan age are interpreted herein to correspond to Mount Messenger facies equivalent, the thick mudstone sequences above and below these units are assigned to the upper slope–bathyal facies of the mid and upper Manganui Formation.

Log characteristics: Conspicuous blocky signature on the gamma ray logs characterises the units with responses that are lower than those of the enveloping Manganui Formation mudstones. Density and neutron logs cross overs are generally observed as well as an


average increase in acoustic values. The boundaries with the mudstones of the Manganui Formation are sharp and characterised by prominent shifts on the gamma and density logs.

Depositional environment: The units represent deep water submarine fan sandstone facies of a complex sedimentary system being deposited during the early to late Tongaporutuan and composed of shelfal (Kiore), slope (Urenui) and basinal mudstones (Manganui) sediments (Strogen, 2011).

Age: The age of units 1 and 2 is restricted to Tongaporutuan, Late Miocene.

Associated seismic reflectors: In the northern part of the study area the top of the “Tt sand 1” unit is associated with the N40 reflector (e.g. Takapou-1 and Tui-1). While the “Sw sands” and “Tt sand 1” units are of different ages, they may represent a north to northwest progradation on the same depositional system, deposited off the shelf-slope break in the Waiauan to early Tongaporutuan. The lower and upper boundaries of the “Tt sand 2” unit do not correspond to a seismic reflector. The upper boundary coincides in places with the base of the Giant Foresets Formation in the study area.

7.6 ROTOKARE GROUP (ROBINSON AND KING, 1988)

7.6.1 Giant Foresets Formation (Pilaar and Wakefield, 1978)

Reference well in study area: Maui-3, 785–452 m MD.

Lithology: Sandy siltstone to mudstone sequences characterised by abundant shell fragments. The sequences are deposited in clinoforms and represent the progradational infill of depocentres that were formed by an extensional regime which characterised the basin from the early Pliocene to Recent.in the northern part of the study area.

Log characteristics: The lower boundary is marked regionally by a sharp decrease in gamma ray values (Hansen and Kamp, 2002; Roncaglia et al., 2008). In general, gamma-ray values increase upwards within the formation and coinciding with an overall upwards-coarsening of the sediments (Hansen and Kamp, 2002, 2006). Occasionally, acoustic logs readings drop remarkably in the lower part of the formation (i.e., Maui-4). In the reference well, the upper part of the formation (609-485 m MD) is characterised by a blocky to serrate acoustic log pattern where low density siltstone and mudstone beds are separated by high density calcareous beds (shellbeds). The same pattern was recognised in the Matemateaonga and the Giant Foresets formations in wells to the east in the adjacent Kupe area (Roncaglia et al., 2008).

Depositional environment: Slope to shelfal depositional environment.

Age: The base of the formation in the study wells is not older than Opoitian. The formation was deposited in the Pliocene to Pleistocene.

Associated seismic reflectors: N50, lower boundary. The seabed forms the upper boundary of the formation in the study area.


8.0 ACKNOWLEDGMENTS

Angela Griffin is thanked for discussion, comments and drafting of figure 1. Dominic Strogen and Ian Raine (GNS Science) are thanked for their constructive criticism of the initial manuscript. This work was made possible through grants from the New Zealand Foundation for Research, Science and Technology in the period 2009-11 and GNS Science Direct Core Funding.

9.0 REFERENCES

Anthony, D. P., Gilbert, C. E., Sutherland, G. F., Pidgeon, B. A., Mills, K. L., & Pass, G. P., 2006. The

Kupe Field subsurface development plan. In: 2006 New Zealand Petroleum Conference

proceedings. Crown Minerals, Ministry of Economic Development. Wellington, New Zealand.

Berggren, W.A., Kent, D.V., Swisher, C.C., Aubry, M.-P. 1995. A revised Cenozoic geochronology and

chronostratigraphy. In: Berggren, W.A., Kent, D.V., Aubry, M.-P., Hardembol, J., eds.

Geochronology, time scales and global stratigraphic correlation. SEPM (Society for

Sedimentary Geology) Special Publication 54, 129-212.

Bishop, D.G. 1971. Sheets S1, S3 & S4 Farewell-Collingwood. Geological map of New Zealand

1:63,360. New Zealand Geological Survey. Dept. of Scientific and Industrial Research,

Wellington.

Bland, K.J., Kroeger, K.F., Strogen, D.P., Fohrmann, M. 2009. An allostratigraphic framework for the

Cretaceous-Recent fill of Taranaki Basin: insights from the Kupe area. In: Barrell, D.J.A.;

Tulloch, A.J., eds. Geological Society of New Zealand & New Zealand Geophysical Society

Joint Annual Conference, Oamaru, 23-27 November 2009: programme and abstracts.

Wellington: Geological Society of New Zealand. Geological Society of New Zealand

miscellaneous publication 128A, p. 25.

Browne, G.H., Kennedy, E.M., Constable, R.M., Raine, J.I., Crouch, E.M., Sykes, R. 2008. An

outcrop-based study of the economically significant Late Cretaceous Rakopi Formation,

northwest Nelson, Taranaki Basin, New Zealand. New Zealand Journal of Geology and

Geophysics, 51(4), 295-315.

Cande, S.C., Kent, D.V. 1995. Revised calibration of the geomagnetic polarity time scale for the Late

Cretaceous and Cenozoic. Journal of Geophysical Research, 100, p. 6093-6095.

Carter, M., E.R.L. Kintanar 1987. Cape Farewell-1 Well Completion Report PPL38119. Wellington:

Ministry of Economic Development. PR1234. 352pp., 13 enclosures.

Cooper, R.A. (ed.) 2004. The New Zealand Geological Timescale. Institute of Geological and Nuclear

Sciences Monograph 22, 284 p.

Crampton, J.S., Schioler, P., Morgans, H.E.G., Raine, J.I., Roncaglia, L., Fohrmann, M., Reid, E.

2012. Quantitative stratigraphy of the Taranaki Basin. GNS Science data series 17a.

Crouch, E.M. 2010. Provisional New Zealand Teurian (Paleocene) dinoflagellate cyst zonation

scheme. GNS Science internal report 2010/5. 45 p.


Crundwell, M.P. 2004. Dating and correlation of the Mt Messenger Formation: a new highly resolved

Late Miocene time scale. IN: 2004 New Zealand Petroleum Conference proceedings.

Wellington: Crown Minerals, Ministry of Economic Development.

Crundwell, M.P.; Nelson, C.S. 2007. A magnetostratigraphically-constrained chronology for Late

Miocene bolboformids and planktic foraminifers in the temperate southwest Pacific.

Stratigraphy, 4(1), 1-34.

Fohrmann, M., Reid, E., Hill., M.G., King, P., Zhu, H., Bland, D.P., Strogen, D.P., Roncaglia, L., Scott,

G.P.L. 2012. Seismic reflection character, mapping and tectono-stratigraphic history of the

Kupe area (4D Taranaki Project), south-eastern Taranaki Basin GNS Science Report,

2012/36, 62 pp.

Gerritsen, S. W. 1994. The regional stratigraphy and sedimentology of the Miocene sequence in the

Ohura-Taumarunui region. Unpublished M.Sc. Thesis, The University of Waikato, Hamilton,

New Zealand.

Gradstein, F.M., Ogg, J.G., Smith, A.G. (eds) 2004. A geologic time scale 2004. Cambridge, UK:

Cambridge University Press. 589 p.

Gradstein, F.M., Ogg, J.G., Schmitz, M.D., Ogg G.M. (eds) 2012. The geologic time scale 2012.

Oxford: Elsevier. 2 v.

Grain, S., King, P.R. Atkins, C. 2008. Palaeogeography of a mid Miocene turbidite complex, Moki

Formation, southern Taranaki Basin. p. 45 IN: Wysoczanski, R. (comp.) Geological Society of

New Zealand, New Zealand Geophysical Society, New Zealand Geochemical & Mineralogical

Society joint annual conference: Geosciences '08: programme and abstracts. Lower Hutt:

Geological Society of New Zealand. Geological Society of New Zealand miscellaneous

publication 125A.

Griffin, A.G., Roncaglia, L. 2013. Petroleum well summary sheets from Taranaki Basin, New Zealand:

selected wells from the western Platform and Southern Inversion areas. GNS Science data

series 1d. 1 CD

Hansen, R.J., and Kamp, P.J.J., 2002. Evolution of the Giant Foresets Formation, northern Taranaki

Basin, New Zealand. In Proceedings of New Zealand Petroleum Conference 2002, 24 – 27

February.

Hansen, R.J.; Kamp, P.J.J. 2004. Late Miocene to Early Pliocene stratigraphic record in northern

Taranaki Basin: condensed sedimentation ahead of Northern Graben extension and

progradation of the modern continental margin. New Zealand Journal of Geology and

Geophysics, 47(4): 645-662.

Hansen, R.J., and Kamp, P.J.J., 2006. Sequence stratigraphy and architectural elements of the Giant

Foresets Formation, northern Taranaki Basin, New Zealand. In Proceedings of New Zealand

Petroleum Conference 2006, 6 – 10 March.

Hay, R.F. 1967. Geological map of New Zealand 1:250,000 Sheet 7 Taranaki. 1st ed. Wellington:

Department of Scientific and Industrial Research. Geological map of New Zealand 1:250,000

7. 1 fold. map


Higgs, K.E., Arnot, M.J., Browne, G.H., Kennedy, E.M. 2010a Reservoir potential of Late Cretaceous

terrestrial to shallow marine sandstones, Taranaki Basin, New Zealand. Marine and petroleum

geology, 27(9): 1849-1871.

Higgs, K.E., King, P.R., Sykes, R., Crouch, E.M., Browne, G.H., Raine, J.I., Brathwaite, R.L., Strogen,

D.P., Chague-Goff, C., Palmer, J. 2010b. Middle to Late Eocene stratigraphy, Taranaki Basin,

New Zealand: a catalogue integrating biostratigraphy, sedimentology, geochemistry and log

data over the NE-SW trending Mangahewa Formation fairway. Lower Hutt: GNS Science.

GNS Science report 2009/30.

Higgs, K.E., King, P.R., Raine, J.I., Sykes, R., Browne, G.H., Crouch, E.M., Baur, J.R. 2012a.

Sequence stratigraphy and controls on reservoir sandstone distribution in an Eocene marginal

marine-coastal plain fairway, Taranaki Basin, New Zealand. Marine and petroleum geology,

32(1): 110-137.

Higgs, K.E., Strogen, D., Griffin, A., Ilg, B., Arnot, M., 2012b . Reservoirs of the Taranaki Basin, New

Zealand. GNS Science Data Series No. 2012/13a.

Hollis, C.J.; Beu, A.G.; Crampton, J.S.; Crundwell, M.P.; Morgans, H.E.G.; Raine, J.I.; Jones, C.M.;

Boyes, A.F. 2010. Calibration of the New Zealand Cretaceous-Cenozoic timescale to

GTS2004. Lower Hutt: GNS Science. GNS Science report 2010/43, 20 p.

Hood, S., Nelson, C.S., Kamp, P.J.J., 2003. Lithostratigraphy and depositional episodes of the

Oligocene carbonate-rich Tikorangi Formation, Taranaki Basin, New Zealand. NZJGG, 46,

363-386.

Kamp, P.J.J., Vonk, A.J., Bland, K.J., Griffin, A.G., Hayton, S., Hendy, A.J.W., McIntyre, A.P.,

Nelson, C.S., Naish, T.R. 2002. Megasequence architecture of Taranaki, Wanganui, and King

Country basins and Neogene progradation of two continental margin wedges across western

New Zealand. p. 464-481 IN: 2002 New Zealand Petroleum Conference proceedings, 24-27

February 2002, Carlton Hotel, Auckland, New Zealand. Wellington: Publicity Unit, Crown

Minerals, Ministry of Economic Development

Kamp P. J. J., Vonk A. J., Bland K. J., Hansen R. J., Hendy A. J. W., McIntyre A. P., Ngatai M.,

Cartwright S. J., Hayton S., Nelson, C. S., 2004. Neogene stratigraphic architecture and

tectonic evolution of Wanganui, King Country, and eastern Taranaki basins, New Zealand.

New Zealand Journal of Geology and Geophysics, 47(4). 625-644.

King, P.R., 1988a. Well summary sheets, onshore Taranaki. New Zealand Geological Survey report,

G125.

King, P.R., 1988b. Well summary sheets, offshore Taranaki. New Zealand Geological Survey report,

G127.

King, P.R., Thrasher, G.P. 1996. Cretaceous-Cenozoic geology and petroleum systems of the

Taranaki Basin, New Zealand. Lower Hutt: Institute of Geological & Nuclear Sciences. Institute

of Geological & Nuclear Sciences monograph 13. 243pp.

King, P.R., Naish, T.R., Browne, G.H., Field, B.D., Edbrooke, S.W. 1999. Cretaceous to Recent

sedimentary patterns in New Zealand. Lower Hutt: Institute of Geological & Nuclear Sciences.

Institute of Geological & Nuclear Sciences folio series 1. 1 v.


Lock, R. 1985. The distribution, sedimentology and petroleum prospects of the Moki Formation,

Taranaki Basin, New Zealand. PPL 38114. Wellington: Ministry of Economic Development.

PR1150. 102p., 4 enclosures.

McBeath, D.M., 1977. Gas-condensate fields of the Taranaki basin, New Zealand. New Zealand

Journal of Geology and Geophysics, 20, 99-127.

Milner, M., Massey, M., Jones, C.M., Viskovic, G.P.D. 2010. Offshore Taranaki phase- and datum-

shifted seismic database. GNS Science data series 3a. Database.

Naish, T.R., Wehland, F., Wilson, G.S., Browne, G.H., Cook, R.A., Morgans, H.E.G., Rosenberg,

M.D., King, P.R., Smale, D., Nelson, C.S., Kamp, P.J.J., Ricketts, B. 2005. An integrated

sequence stratigraphic, palaeoenvironmental, and chronostratigraphic analysis of the

Tangahoe Formation, southern Taranaki coast, with implications for mid-Pliocene (c. 3.4-3.0

Ma) glacio-eustatic sea-level changes. Journal of the Royal Society of New Zealand, 35(1/2),

151-196.

Ogg , J.G., Agterberg, F.P., Gradstein, F.M. 2004. The Cretaceous Period. In: Gradstein, F.M., Ogg,

J.G., Smith, A.G. (eds) 2004. A geologic time scale 2004. Cambridge, UK: Cambridge

University Press. 589 p.

Palmer, J., 1985. Pre-Miocene lithostratigraphy of Taranaki Basin, New Zealand. New Zealand

Journal of Geology and Geophysiscs, 1985, 28, 197-216.

Pilaar, W.F.H., Wakefield, L.L. 1978. Structural and stratigraphic evolution of the Taranaki Basin,

offshore North Island, New Zealand. APEA Journal, 18: 93-101.

Pollock, R.M., Crouch, E., 2005. Correlation of Paleocene to Eocene sediments between Tui-1 and

the Maui Field, offshore Taranaki, New Zealand. Wellington: Ministry of Economic

Development. PR3099. 49p.

Proust, J.-N., Lamarche, G., Nodder, S., Kamp, P.J.J. 2005. Sedimentary architecture of a Plio-

Pleistocene proto-back-arc basin : Wanganui Basin, New Zealand. Sedimentary Geology,

181(3/4): 107-145.

Raine, J.I., 1984. Outline of a palynological zonation of Cretaceous to Paleogene terrestrial sediments

in West Coast Region, South Island, New Zealand. Report, New Zealand Geological Survey

109, 82.

Raine, J.I., 2004. New Eocene and Oligocene miospore zones and subzones. Appendix to Chapter

11. In: Cooper, R.A. (ed.), The New Zealand Geological Timescale. Institute of Geological &

Nuclear Sciences Monograph, vol. 22, pp. 162-163.

Raine, J.I., Beu, A.G., Boyes, A.F., Campbell, H.J., Cooper, R.A., Crundwell, M.P., Hollis, C.J.,

Morgans, H.E.G. 2012. New Zealand Geological Timescale v. 2012/1. Lower Hutt: GNS

Science.

Raine, J.I., Schioler, P. 2012. Upper Cretaceous biostratigraphy of Maui-4 and Tane-1 wells, Taranaki

Basin. Lower Hutt: GNS Science. GNS Science report 2012/28. 61 p.

Robinson, P.H., King, P.R. 1988. Hydrocarbon reservoir potential of the Taranaki Basin, western New

Zealand. Energy exploration & exploitation, 6(3), 248-262.


Roncaglia, L. 2010. Well summary sheets from Taranaki Basin, New Zealand : selected wells from the

Kupe and Maari Field areas. GNS Science data series 1a. 1 CD

Roncaglia, L., Morgans, H.E.G., Arnot, M.J., Baur, J.R., Zhu, H., Bushe, H., Jones, C.M., King, P.R.,

Milner, M. 2008. Stratigraphy, well correlation and seismic-to-well tie in the Upper Cretaceous

to Pliocene interval in the Kupe region, Taranaki Basin, New Zealand: introduction to the

stratigraphic database in PETREL. Lower Hutt: GNS Science. GNS Science report 2008/07.

24 p.

Roncaglia, L., Milner, M., Baur, J.R., Fohrmann, M., Kroeger, K.F., Strogen, D.P., Zhu, H., Arnot, M.J.,

Bland, K.J., Bushe, H., Funnell, R.H., Ilg, B.R., Hill, M.G., Jones, C.M., King, P.R., Leitner, B.,

Morgans, H.E.G., Reid, E. 2010. Procedures and metadata protocols used in modelling

Taranaki Basin petroleum systems : guidelines from a pilot case study in the Kupe area.

Lower Hutt: GNS Science. GNS Science report 2009/49. 70 p.

Roncaglia, L., Griffin, A.G., Tamin, F., Boyes, A. 2012. Petroleum well summary sheets from Taranaki

Basin, New Zealand: selected wells from the Maui and Tui Field areas. GNS Science data

series 1b. 1 CD.

Roncaglia, L., Griffin, A., Morgans, H.E.G., Crundwell, M. 2013. Stratigraphic database for the

correlation of upper Haumurian (Upper Cretaceous) to Opoitian (Lower Pliocene) siliciclastic

succession in the central and southern offshore area of the Taranaki Basin, New Zealand.

GNS Data Series 16A, 1 CD.

Short, K.C. and van Rijen, W.M.L., 1963. Mangahewa-1 well proposal and resume. New Zealand

Unpublished Openfile Petroleum Report, 428, 163p, 23 enclosures.

Strogen, D.P., Roncaglia, L., Crouch, E.M. 2010. The Farewell Formation reservoir fairway : a study of

Paleocene biostratigraphy, facies development and reservoir quality in the Taranaki Basin. p.

283 IN: Hoskin, P., Hikuroa, D., Eccles, J. (conveners) GeoNZ 2010: geoscience, geothermal :

abstract volume : Auckland, 21-24 November 2010. Wellington: Geoscience Society of New

Zealand. Geoscience Society of New Zealand miscellaneous publication 129A.

Strogen, D.P. (compiler). 2011. Paleogeographic synthesis of the Taranaki Basin and surrounds. GNS

Science Report, 2010/53, 83p.

Suggate, R.P. 1956. Puponga Coalfield. New Zealand journal of science and technology. B, General

section, 37(5), 539-559.

Thrasher, G.P. 1992. Late Cretaceous source rocks of Taranaki Basin. p. 147-154 IN: 1991 New

Zealand Oil Exploration Conference: proceedings. Wellington, NZ: Ministry of Commerce

Publicity Unit.

Vonk, A.J., Kamp, P.J.J., Hendy, A.J.W. 2001. Geological development of the Late Miocene-Early

Pliocene succession (Matemateaonga and Kiore Formations), eastern Taranaki Peninsula. p.

151. In: Lowe, D.J., Cooke, P.J., Pallentin, A. (eds.) Geological Society of New Zealand

annual conference 2001, 27-29 November, Hamilton : Advances in geosciences: abstracts &

programme. [Wellington]: Geological Society of New Zealand. Geological Society of New

Zealand miscellaneous publication 110A.


Vonk, A.J., Kamp, P.J.J. 2004. Late Miocene-Early Pliocene Matemateaonga Formation in eastern

Taranaki Peninsula: a new 1:50,000 geological map and stratigraphic framework. 9 p. IN:

2004 New Zealand Petroleum Conference proceedings. Wellington: Crown Minerals, Ministry

of Economic Development.

Vonk, A.J., Kamp, P.J.J. 2008. The Late Miocene Southern and Central Taranaki Inversion Phase

(SCTIP) and related sequence stratigraphy and paleogeography. 17 p. In: 2008 New Zealand

Petroleum Conference proceedings: beyond 08. Wellington: Ministry of Economic

Development.

Zhu, H., Arnot, M.J., Jones, C.M., Juniper, Z., Viskovic, P. 2012. Depth-TWT calibrations for 35

selected offshore Taranaki wells. GNS Science data series 2a. 1 CD.

Depth

(m brt)

Cook-1CALI

4 24inches

DT

240 40us/ft

GR

0 150GAPI

RHOB

1.95 2.95g/cc

Cas

ing

Fo

rmat

ion

SP

-60 100 mv

Ep

och

Water Depth

Inte

rpre

ted

litho

logy

NZ

Sta

ge

Bio

sam

ple

Elevation (m)

100 -400

Depth

(m brt)

Cape Farewell-1

Cas

ing

Ep

och

Bio

Dep

th

Water DepthCALI

4 24inches

RHOB

1.95 2.95g/cc

SP

-60 100 mv

DT

240 40us/ft

GR

0 150GAPI

Inte

rpre

ted

litho

logy

Fo

rmat

ion

NPHI

0.45 -0.15v/v

NZ

Sta

ge

Elevation (m)

100 -400

Depth

(m brt)

Fresne-1CALI

4 24inches

DT

240 40us/ft

GR

0 150GAPI

NPHI

0.45 -0.05v/v

RHOB

1.95 2.95g/cc

SP

-60 100 mv

NZ

Sta

ge

Cas

ing

Ep

och

Water Depth

Inte

rpre

ted

litho

logy

Fo

rmat

ion

Bio

Sam

ple

Elevation (m)

100 -1000

Depth

(m brt)

North Tasman-1CALI

4 24inches

DT

240 40us/ft

GR

0 150GAPI

NPHI

0.45 -0.15v/v

RHOB

1.95 2.95g/cc

Cas

ing

SP

-60 100 mv

Water Depth

Elevation (m)

100 -2000

Ep

och

Inte

rpre

ted

Lith

olog

y

Fo

rmat

ion

NZ

Sta

ge

Bio

sam

ple

140

210

280

350

420

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

291/2"

167.9

16"

342.2

95/8"

1113.1

[email protected]

356.2

Lower ManganuiFormation

498.1

KaipukeFormation

545.0

TakakaFormation

579.0

Abel HeadFormation

648.8

FarewellFormation

1414.0

North CapeFormation

2251.0

RakopiFormation

Mio

cene

Olig

ocen

eP

aleo

cene

Cre

tace

ous

387

no data

408

Sl

413

no data

482

Sc

500

no data

518

Pl

546

no data

564

Ld-lo

wer

Lw

582

no data

655

Lwh

665

no data

1414

Dt

1487

no d

ata

2661

Mh

10

1010

10-150

-150

-150

-150

-150

-150

-150

-150

-150

10

10

1010

10

0

0

0

0

0

0

0

0

-50

-50-50

-50-200

-200

-200

-200

-200

-200

-200

-200

-200

-50

-50

-50-50

-50

0

0

0

00

0

10

10

10

10

10

10

10

10

0

0

0

0

0

0

0

70

140

210

280

350

420

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

0.0

30"

73.0

20"

683.0

133/8"

1575.0

TD@281

L.C

reta

ceou

s-P

aleo

cene

No

data

Late

Cre

tace

ous

0.0

FarewellFormation

178.0

North CapeFormation,PupongaMember

330.0

North CapeFormation

1159.0

"Green Hills" unit

1543.0

RakopiFormation

2694.0

RakopiFormation

(OtimatauraConglomerate)

330

Mh-

Dt

1180

No

data

2750

uppe

r Mh

0

70

140

210

280

350

420

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

206

Sc

248

Pl

308

uppe

r Lw

-Po

332

low

erLw

350

no data

401

Ld

599

no d

ata

881

Dt-D

w

923

no d

ata

2503

Mh

0.0

30"

107.7

20"

187.4

133/8"

395.5

95/8"

1251.0

TD@2503m

Mio

cene

Olig

ocen

eno

dat

aP

aleo

cene

-Eoc

ene

no d

ata

Late

Cre

tace

ous

197.0


237.0

KaipukeFormation

323.0

TakakaFormation

386.0

Abel HeadFormation

409.5

MangahewaFormation C

sand

605.5

FarewellFormation E

shale

752.1

FarewellFormation E

sand

923.0

North CapeFormation,PupongaMember

1230.0

North CapeFormation

1550.0

North CapeFormation,

Fresne Memberof Thrasher

(1992)

00

-400

-400

-400

-600

-400

-400

00

0

0

0

0

00

-400-400

-1000

-1000

-1000

-2000

-1000

-1000

-400-400

-400

0

0

0

00

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

TD@2727m

Ear

ly-M

idM

ioce

neE

arly

Mio

cene

Olig

.- E

.Mio

c.E

oc.-O

lig.

Eoc

ene

Pal

eoce

neno

dat

aC

reta

ceou

s

1567.1


1821.0

TaimanaFormation

1939.0

OtaraoaFormation

1969.8

MatapoSandstone

Member

1975.0

OtaraoaFormation

1990.6

Turi Formation

2009.9

MangahewaFormation,

C sand

2121.8

FarewellFormation,

E sand

2247.8

North CapeFormation

2429.3


Wainui Member

2669.0

Basement

1600

1652

Pl-S

c

1850

Pl

1902

Po-

Pl

1905

Po

1942

lwr L

w

1975

Lwh-

Lw

2006

Ar-

Lwh

2118

Dw

-lwr A

b

2246

Dt

2469

no d

ata

2624

Mh

-2000

-600

-600

-600-600

-600

-600

-600-600

00

00000

-600

0

0

00

0

0

00

? ? ? ? ? ? ? ? ?

?

? ? ? ? ? ? ? ? ?

?

?

?

?

?

?

? ? ? ? ? ? ? ?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

? ? ? ? ? ? ? ?

P20 P30 P50

P60

Enclosure 1

Well correlation panel: Cook-1, Cape Farewell-1, Fresne-1, North Tasman-1

Datum: Farewell Formation (E shale) top

LEGEND

Matapo Sandstone Member

Page 1

Depth

(m brt)

Takapou-1HCAL

0 15inches

DT

240 40us/ft

NPHIcorr

0.45 0RHOZcorr

1.95 2.95

GR

0 150GAPI

SP

-60 100 mv

Water depth

Ep

och

Elevation (m)

100 -2000

Cas

ing

Inte

rpre

ted

litho

logy

Bio

sam

ple

Fo

rmat

ion

NZ

Sta

ge

Depth

(m brt)

Pateke-2TNPH

0.6 0v/v

RHOB

1.95 2.95g/cc

DTBC

240 40us/ft

DCAL

4 24inches

GR_ARC

0 150GAPI

Ep

och

Water depth

Bio

sam

ple

Elevation (m)

100 -2000

Cas

ing

Fo

rmat

ion

NZ

Sta

ge

Inte

rpre

ted

litho

logy Depth

(m brt) Cas

ing

Fo

rmat

ion

Kiwi-1TNPH

0.55 0v/v

RHOB

1.95 2.95g/cc

HORD

4 24inches

GR_ARC

0 150GAPI

DTCO

240 40us/ft

Water Depth

Ep

och

NZ

Sta

ge

Elevation (m)

100 -2000Bio

sam

ple

SP

-60 100 mv

Inte

rpre

ted

litho

logy Depth

(m brt)

Amokura-1DT4P

240 40us/ft

NPHI

0.65 0v/v

RHOZ

1.95 2.95g/cc

Ep

och

Water Depth

Bio

sam

ple

Elevation (m)

100 -1000

Inte

rpre

ted

litho

logy

Sta

ge

SP

-60 100 mv

Cas

ing HCAL

4 24inches

GR

0 150GAPI

Fo

rmat

ion

Depth

(m brt) Cas

ing

Tui-1HCAL

4 24inches

DTCO

240 40us/ft

SP

-60 100 mv

GR

0 150GAPI

NPHIcorr

0.45 0

Ep

och

Bio

sam

ple

Fo

rmat

ion

RHOB

1.95 2.95g/cc

Inte

rpre

ted

litho

logy

NZ

Sta

ges

Water depth

Elevation (m)

100 -2000

Depth

(m brt)

Maui-3

Ep

och

CALI

4 24inches

SP

-150 50 mv

Water Depth

Elevation (m)

100 -1100

Cas

ing

RHOB

1.95 2.95g/ccGRXB

0 150GAPI

BHC

240 40us/ft

NZ

Sta

ge

Mud

log

Bio

sam

ple

Fo

rmat

ion

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

2870

2940

3010

3080

3150

3220

3290

3360

3430

3500

3570

3640

3710

3780

3850

3920

3990

4060

4130

4200

Mio

cene

-Plio

cene

Mio

cene

Olig

ocen

eE

ocen

eP

aleo

cene

Cre

tace

ous

133/8"

1671.7

95/8"

3745.0

TD@4186mMD

1339.4

Upper ManganuiFormation

2324.5

Tt sand 1

2363.6


2565.2

?Sw sand

2575.0

Mid Manganui

2609.5

Sw sand

2621.5

Mid ManganuiFormation

2739.0

Moki Formation

2868.3


2899.3

TaimanaFormation

2927.8

TikorangiFormation

2978.4

OtaraoaFormation

2992.7

Turi Formation

3682.0

Lower TuriFormation E

shale

3940.0

FarewellFormation F1

sand equivalent

4012.5

North CapeFormation

4087.0


Wainui Member

4183.0

Basement

0

0

0

0

-600

-600

-600

-600

-600

-600

-600

-600

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-600

-600-600

-600

-600

-600

-600

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

0

0

0

0

-600

-600

-600

-600

-600

-600

-600

-600

-600

0

000

-600

-600

-600

-600

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-1000

-1000-1000

-1000

-1000

-1000

-1000

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-600

-600

-600

-600

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-600

-600-600-600

0

00

0

0

1240

Wp-

Upp

1380

Lwr W

o

1460

Upp

Tk

1760

Lwr T

k

2240

Upp

Tt

2580

Lwr T

t

2670

Sw

2770

Lwr S

w

2800

Sl

2860

Lwr S

l

2890

Sc

2910

Upp Pl

2920

Mid PI

2940

Lwr

Pl

2950

Po-

Lw

2960

Lwr

Lwh

3020

Ar

3040

Ab-

Ak

3160

Ab

3180

No

data

3200

Dp

3240

Dm

-Dh

3490

Dh

3510

Dm

-Dh

3640

Dm

3744

Lwr D

m

3750

Dw

-Dm

3882

Dw

3900

Dt-D

w

3972

Dt

4017

No

data

4065

Mh

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

2870

2940

3010

3080

3150

3220

3290

3360

3430

3500

3570

3640

3710

3780

3850

95/8"

1503.5

TD 3861mMD

1253.0


2328.0

Tt sand 2

2386.5


2484.0

Tt sand 1

2580.1


2663.5

M2A sand

2674.0


2747.0

Moki Formation

2793.0


2946.3

TaimanaFormation

2978.1

TikorangiFormation

3036.0

Otaraoa Formation

3047.0

Turi Formation

3414.0

Kaimiro D sand

3460.0


shale

3674.0


sand

No

info

rmat

ion

avai

labl

e

3861

No

info

rmat

ion

avai

labl

e

No

info

rmat

ion

avai

labl

e

No

info

rmat

ion

avai

labl

e

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

2870

2940

3010

3080

3150

3220

3290

3360

3430

3500

3570

3640

3710

3780

3850

3920

3990

4060

4130

4200

4270

95/8"

1504.8

TD@4238mMD

1322.0


2551.5


2646.8

M2A sand

2663.3


2741.8

Moki Formation

2832.0


2980.3

TaimanaFormation

3008.5

TikorangiFormation

3060.1

OtaraoaFormation

3123.3

Turi Formation

3403.0

Kaimiro D sand

3533.0


shale

3709.0


sand

4028.0

North CapeFormation

4215.0

Basement

Pal

eoce

neC

reta

ceou

s

4028

Dt

4215

Mh

000

0

0

0

0

0

0

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

2870

2940

3010

3080

3150

3220

3290

3360

3430

3500

3570

3640

3710

3780

3850

3920

3990

Upp

.C

reta

ceou

s

0

0

3996

upp.

Mh

135/8"

1493.0

95/8"

3119.2

[email protected]

1187.0


2319.3

Tt sand 2

2346.0


2451.9

Tt sand 1

2551.5


2594.7

M2A sand

2602.5


2687.0

Moki Formation

2797.5


2947.8

TaimanaFormation

2976.7

TikorangiFormation

3026.0

OtaraoaFormation

3049.0

Turi Formation

3331.0

Kaimiro D sand

3497.0


shale

3674.0


sand

3934.0

North CapeFormation

3978.0

Basement

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

2870

2940

3010

3080

3150

3220

3290

3360

3430

3500

3570

3640

3710

3780

3850

3920

133/8"

1494.0

95/8"

3109.0

TDat3902mMD

Mio

cene

Olig

ocen

eE

ocen

eP

aleo

cene

Mes

ozoi

c

-2000

-2000

-2000

-1000

-2000

-2000

-2000

-2000

-1000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

0

400

0

0

0

1090.0


2288.8

Tt sand 2

2300.8


2399.3

Tt sand 1

2516.3


2567.3

M2A sand

2572.5


2657.5

Moki Formation

2767.4

Lower Manganui

2930.3

TaimanaFormation

2980.0

TikorangiFormation

3015.0

OtaraoaFormation

3074.0

Turi Formation

3321.5

Kaimiro "D" sand

3485.0

Lowert TuriFormation, E

shale

3663.8

FarewellFormation, F1

sand

3893.0

Basement

1930

Tt-T

k

1950

no data

2525

low

er T

t

2540

no data

2550

Sw

2700

Sl

2760

no d

ata

2762

Sc-

Sl

2800

no d

ata

2900

Sc

2925

no data

2980

Pl

2990

no data

3010

Lwh

3025

no data

3095

Ar

3150

no d

ata

3250

Ab-

Ak

3300

no d

ata

3400

Upp

Dw

-Dh

3420

no data

3560

Dw

3600

no d

ata

3893

Dt

3936

400

400

400

-600

400

400

400

400

-600

-600

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

0

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

2870

2940

3010

3080

3150

3220

3290

3360

3430

Plio

cene

Late

Mio

cene

Mid

Mio

cene

Ear

ly-M

id M

ioce

neO

ligoc

ene

Mid

- La

te E

ocen

eE

arly

-Mid

Eoc

ene

Ear

lyE

ocen

eP

aleo

cene

16

455.6

95/8"

1831.8

7"

3143.3

[email protected]

570

Wm

785

Wo

1530

Tt

2358

Sl-S

w

2429

Sc

2591

Pl

2636

Lw

2667

Lwh-

Ld

2688

Ar

2734

Ak

3020

Ab-

Ak

3255

Dh

3255

no data

3271

Dw

3400

Dt

452.8

Giant ForesetsFormation

785.0


1750.0

Sw sandsinterval

1912.5


2133.5

Moki Formation

2365.0


2523.2

TaimanaFormation

2567.9

TikorangiFormation

2635.8

OtaraoaFormation

2663.3

Turi Formation

2713.5

MangahewaFormation, C

shale

2734.1


sand

3014.3

Lower TuriFormation, D

shale

3044.8

KaimiroFormation, D

sand

3242.8

Lower TuriFormation, E

shale

3273.4

FarewellFormation, E

sand

3310.9


sand

3344.2

FarewellFormation, G

sand

0

0

0

0

0

0

0

0

0

0

0

0

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600000

000

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Enclosure 2

Well correlation panel: Takapou-1, Pateke-2, Kiwi-1, Amokura-1, Tui-1, Maui-3

Datum: Moki Formation top

LEGEND

?

Stratigraphic position unknown

due to lack of wireline logs and biostratigraphic

data

Stratigraphic position inferred

based on seismicdata only

Page 1

Depth

(m brt)

Kea-1CALS

4 24inches

DT

240 40us/ft

NPHI

0.55 0v/v

RHOB

1.95 2.95g/cc

Cas

ing

SP

-60 100 mv

Water Depth

Elevation (m)

100 -2000

Ep

och

Inte

rpre

ted

litho

logy

Fo

rmat

ion

GR

0 150GAPI

NZ

Sta

ge

Bio

Sam

ple

Depth

(m brt)

Maui-1DT

240 40us/ft

SP

-130 60 mv

RHOB

1.85 2.95g/ccInte

rpre

ted

litho

logy

Water depth

Fo

rmat

ion

NZ

Sta

ge

Cas

ing

Ep

och

Elevation (m)

100 -2000

GR

0 150GAPI

Bio

sam

ple

Depth

(m brt)

MB-P8CALI

4 24inches

GR

0 150GAPI

DT

240 40us/ft

NPHI

0.45 -0.15v/v

RHOB

1.95 2.95g/cc

Cas

ing

SP

-60 100 mv

Mu

d lo

g

Fo

rmat

ion

NZ

Sta

ge

Ep

och

Bio

sam

ple

Water Depth

Elevation (m)

100 -400

Depth

(m brt)

Maui-7SP corr

-100 150

CALI

5 30inches

DT

200 40us/ft

GR

0 150GAPI

NPHI

0.55 0v/v

RHOB

1.85 2.95g/cc

Ep

och

Water Depth

Inte

rpre

ted

Lith

olog

y

Elevation (m)

100 -400

NZ

Sta

ge

Fo

rmat

ion

Bio

sam

ple

Cas

ing

Depth

(m brt)

Maui-2CALI

4 24inches

DT

240 40us/ft

GR

0 150GAPI

RHOB

1.95 2.95g/cc

SNP

0.45 -0.1v/v

Cas

ing Water Depth

Elevation (m)

100 -2000

SP

-50 150 mvInte

rpre

ted

Lith

olog

y

Fo

rmat

ion

Bio

sam

ple

NZ

Sta

ge

Ep

och

Depth

(m brt)

Maui-3

Ep

och

CALI

4 24inches

SP

-150 50 mvCas

ing

RHOB

1.95 2.95g/ccGRXB

0 150GAPI

BHC

240 40us/ft

NZ

Sta

ge

Mud

log

Fo

rmat

ion Water Depth

Elevation (m)

100 -1100Bio

sam

ple

420

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

2870

2940

3010

3080

20"

524.0

133/8"

1567.0

TD@3135m

Plio

cene

-Ple

isto

cene

Mio

cene

Olig

ocen

eE

oc.-O

lig.

Eoc

ene

560.0


1047.0


1670.1

Sw sand

1689.3


2150.1

M2A sand

2166.3


2208.0

Moki Formation

2574.0


2750.0

TaimanaFormation

2805.0

TikorangiFormation

2901.0

OtaraoaFormation

2913.0

MatapoSandstone

Member

2925.0

Turi Formation

2948.7


shale

2963.0


sand

901

Wm

-Wn

1050

Wm

1300

Tt-T

k

1400

Sw

-Tt

1600

Sw

1700

Sl-S

w

2202

Sl

2328

Sc-

Sl

2697

Sc

2718

Pl-S

c

2830

Pl

2850

Po-

Pl

2901

Lw-P

o

2910

Lwr

Lw

2915

Ld

2931

Ar-

Lwh

2952

Ar

2955

Ak-

Ar

3138

Ak

400

-600

-1000

-2000-600

400

-2000

-2000

-2000

-2000

-2000

-2000

-2000-2000

-2000

-2000

-1000

-1000

-1000

-1000

-2000

-2000-2000

-1000

-1000

-1000-1000

-1000

-1000-1000

-1000

-1000

-1000-600

-600

0

-600

-6000

-600

-1000

-1000

-1000

-1000

-1000

-1000-1000

-1000

-1000

-600

-600

0

0

-1000

-1000-1000

-600

-600

-600-600

-600

-600-600

0

0

00

350

420

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

2870

2940

3010

3080

3150

3220

3290

3360

3430

3500

614.0


1660.0

Sw sandsinterval

1918.5


1971.3

M2A sand

1994.3


2128.9

Moki Formation

2380.0


2499.8

TaimanaFormation

2539.4

TikorangiFormation

2603.4

OtaraoaFormation

2629.0

Turi Formation

2678.6


shale

2691.0


sand

2987.0

Lower TuriFormation D

shale

2993.3

KaimiroFormation D

sand

3177.3

Turi Formation Eshale

3200.3

FarewellFormation E

sand

3258.0


sand

3369.2

FarewellFormation G

sand

3432.9

North CapeFormation

445

Wn-

Wc

482

no d

ata

527

Wo-

Wp

600

Wo

619

no data

1487

low

er T

t

1524

no d

ata

1978

Sw

2024

Sl-S

w

2326

Sl

2353

no data

2438

Sc

2472

no d

ata

2557

Pl

2563

no data

2618

Lw

2621

no data

2636

Lwh-

Ld

2652

no data

2667

Ar

2682

no data

2731

Ak

2987

no d

ata

2987

Dw

-Ab

3047

no d

ata

3047

Dw

-Dp

3155

no d

ata

3158

Upp

.D

w-D

p

3193

no d

ata

3194

Lwr

Dw

3213

Dt-

lwr

3246

no d

ata

3466

Dt

20"

317.3

133/8"

923.8

95/8"

2545.0

7''

3109.0

TD@3512m

Plio

cene

-Ple

isto

cene

Mio

c-P

lioc.

Mio

cene

Olig

oc.-M

ioce

neO

ligoc

ene

Eoc

-Olig

. L

ate

Eoc

ene

Ear

ly -

Mid

Eoc

ene

Pal

eoc.

-P

aleo

cene

350

420

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

2870

2940

3010

3080

3150

3220

3290

3360

3430

3500

3570

3640

3710

185/8"

533.3

133/8"

2180.5

95/8"

3133.3

TD@3708m

725.0


2187.5

Moki Formation

2532.5


2664.0

TaimanaFormation

2707.5

TikorangiFormation

2770.0

OtaraoaFormation

2801.0

Turi Formation

2857.0


shale

2876.0


sand

3160.5


shale

3190.5

KaimiroFormation, D

sand

3390.8

Turi Formation, Eshale

3407.0


sand

3466.0


sand

3547.8


sand

3621.0

Basement

2966

Ab-

Ak

3181

no d

ata

3185

Dh-

Dp

3260

Dm

-Dh

3294

Dm

3306

mid

Dw

-Dm

3350

mid

Dw

3354

no data

3456

Dt-D

w

3621

Dt

3709

no d

ata

Eoc

ene

Pal

eoce

ne-E

ocen

eP

aleo

cene

no d

ata

0

10

101010101010000000000000000000000000010100000000000100000000000001010000000000100000000001000000000000000

0

000000

00

0

00

0

0

Pal

eoba

thym

etry

not

ava

ilabl

e be

low

334

8 m

MD

280

350

420

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

2870

2940

3010

3080

3150

Eoc

ene

2792

Ab-

Ak

2850

no d

ata

2907

Ab

3004

No

data

3013

Dm

-Dh

3075

Dw

-Dp

646.8


1724.5

Sw sandsinterval

1897.5


2050.0

M2A sand

2062.7


2096.0

Moki Formation

2390.0


2517.3

TaimanaFormation

2556.9

Tikorangi Formation

2619.5

OtaraoaFormation

2644.7

Turi Formation

2694.9


shale

2713.9


sand

2990.4

Lower TuriFormation D

shale

3009.4

KaimiroFormation D

sand

20"

472.0

9"5/8

2126.5

TDat 3139mMD

1010

10

101010101010

000

1010101010101010

0

101010101010100000

10000000

10101010000100

00

0

000000

00000000

0000000

0

0000

0

280

350

420

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

2870

2940

3010

3080

3150

3220

3290

3360

3430

3500

3570

16"

326.7

113/4"

1077.2

95/8"

2533.5

TD@3566m

335.0

Giant Foresets

680.6


1662.8

Sw sandsinterval

1841.8


2096.2

Moki Formation

2413.0


2556.0

TaimanaFormation

2597.8

TikorangiFormation

2685.8

OtaraoaFormation

2719.9

Turi Formation

2767.9


shale

2786.0

MangahewaFormation

3088.0

Lower Turi Dshale

3106.0

KaimiroFormation D

sand

3267.0

FarewellFormation E

sand

3373.3


sand

3445.6

FarewellFormation G

sand

3451.5

North CapeFormation

3505.0

Basement

0

0

400

400

400

-600

-600

-600

-600

-600

-600

-1000

-2000-2000

-2000-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000-2000

400

400

400

400

400

400

-600

-1000-1000

-1000-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600-600

457.0

Wm

494.0

no d

ata

521.0

Wp

549.0

no data

649.0

Tk-W

o

741.0

no d

ata

951.0

Tk

1043.0

no d

ata

1134.0

Tt

1162.0

no data

1632.0

lwr T

t

1662.0

no data

1784.0

Sw

1815.0

no data

2245.0

Sl

2275.0

no data

2470.0

Sc

2501.0

no data

2580.0

Pl

2599.0

no data

2693.0

e Lw

2702.0

no data

2718.0

Ld

2728.0

Ar-

Lwh

3307.1

no d

ata

3442.0

Dt-D

w

Plio

cene

no data

Late

Mio

c.-P

lioce

neno

dat

aLa

te M

ioce

neno da

taM

iddl

e M

ioce

neno da

taE

arly

Mio

cene

no data

Late

Olig

ocen

eno da

taLa

teO

ligL.

Eoc

.-E.

Olig

no d

ata

Pal

eoce

ne-E

arly

Eoc

ene

350

420

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

2870

2940

3010

3080

3150

3220

3290

3360

3430

Plio

cene

Late

Mio

cene

Mid

Mio

cene

Ear

ly-M

id M

ioce

neO

ligoc

ene

Mid

- La

te E

ocen

eE

arly

-Mid

Eoc

ene

E.E

oc.

Pal

eoce

ne

0

0

0

0

0

0

0

0

0

0

0

0

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

400

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600000

000

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

16"

455.6

95/8"

1831.8

7"

3143.3

[email protected]

551

Wm

788

Wo

1530

Tt

2358

Sl-S

w

2429

Sc

2591

Pl

2636

Lw

2667

Lwh-

Ld

2688

Ar

2734

Ak

3020

Ab-

Ak

3025

Dh

3255

no d

ata

3271

Dw

3401

Dt

452.8


788.5


1750.0

Sw sandsinterval

1914.0


2133.5

Moki Formation

2365.0


2523.2

TaimanaFormation

2567.9

TikorangiFormation

2635.8

OtaraoaFormation

2663.3

Turi Formation

2713.5


shale

2734.1


sand

3014.3


shale

3044.8

KaimiroFormation, D

sand

3242.8

Lower TuriFormation, E

shale

3273.4


sand

3310.9


sand

3344.2


sand

Enclosure 3

Well correlation panel: Kea-1, Maui-1, MB-P8, Maui-7,Maui-2, Maui-3


LEGEND



Page 1

Depth

(m brt)

Kea-1CALS

4 24inches

DT

240 40us/ft

NPHI

0.55 0v/v

RHOB

1.95 2.95g/cc

Cas

ing

SP

-60 100 mv

Water Depth

Elevation (m)

100 -2000

Ep

och

Inte

rpre

ted

litho

logy

Fo

rmat

ion

GR

0 150GAPI

NZ

Sta

ge

Bio

Sam

ple

Depth

(m brt)

Moki-1CALI

4 24inches

DT

240 40us/ft

GR

0 150GAPI

NPHI

0.55 0v/v

RHOB

1.95 2.95g/cc

Cas

ing

SP

-60 100 mv

Fo

rmat

ion

Mud

log

Ep

och

NZ

Sta

ge

Water Depth

Elevation (m)

100 -1100Bio

Sam

ple

Depth

(m brt)

Maari-1GR

0 150GAPI

CAL

4 24inches

CNCF

55 0v/v

DTC

240 40us/ft

ZDEN

1.95 2.95g/cc

Cas

ing

DTS

240 40us/ft

NZ

Sta

ge

Inte

rpre

ted

litho

logy

Ep

och

Fo

rmat

ion Water Depth

Elevation (m)

100 -2000Bio

sam

ple

Depth

(m brt)

Maari-2DT4P

240 40us/ft

GR

0 150GAPI

HCAL

4 24inches

SP

-60 100 mv

TNPH

0.45 0.1v/vCas

ing

RHOZ

1.95 2.95g/cc Bio

sam

ple

NZ

Sta

ge

Inte

rpre

ted

litho

logy

Fo

rmat

ion

Ep

och

Water Depth

Elevation (m)

100 -2000

Depth

(m brt)

Moki-2ACALI

4 24inches

GR

0 150GAPI

SP

-60 100 mv

DT

240 40us/ft

NPHI

0.55 0v/vCas

ing

RHOB

1.95 2.95g/cc

NZ

Sta

ge

Fo

rmat

ion

Inte

rpre

ted

litho

logy

Water Depth

Ep

och

Bio

sam

ple

Elevation (m)

100 -2000

Depth

(m brt)

Maui-4CALI

4 24inches

DT

240 40us/ft

GR

0 150GAPI

Cas

ing

SP

-60 100 mv

RHOB

1.95 2.95g/cc

Water Depth

Elevation (m)

100 -2000Inte

rpre

ted

Lith

olog

y

Fo

rmat

ion

SNP

0.5 0v/v Bio

Sam

ple

NZ

Sta

ge

Ep

och

Depth

(m brt)

North Tasman-1CALI

4 24inches

DT

240 40us/ft

GR

0 150GAPI

NPHI

0.45 -0.15v/v

RHOB

1.95 2.95g/cc

Cas

ing

SP

-60 100 mv

Water Depth

Elevation (m)

100 -2000

Ep

och

Inte

rpre

ted

Lith

olog

y

Fo

rmat

ion

NZ

Sta

ge

Sam

ple

dep

th

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

2870

2940

3010

3080

3150

3220

3290

3360

133/8"

1567.0

TD@3135m

Mio

cene

Olig

ocen

eE

oc.-O

lig.

Eoc

ene

1047.0


1670.1

Sw sand

1689.3


2150.1

M2A sand

2166.3


2208.0

Moki Formation

2574.0


2750.0

TaimanaFormation

2805.0

TikorangiFormation

2901.0

OtaraoaFormation

2913.0

MatapoSandstone

Member

2925.0

Turi Formation

2948.7


shale

2963.0


sand

1050

1300

Tt-T

k

1400

Sw

-Tt

1600

Sw

1700

Sl-S

w

2202

Sl

2328

Sc-

Sl

2697

Sc

2718

Pl-S

c

2830

Pl

2850

Po-

Pl

2901

Lw-P

o

2910

Lwr

Lw

2915

Ld

2931

Ar-

Lwh

2952

Ar

2955

Ak-

Ar

3138

Ak

400

-600

-1000

-2000-600

400

-2000

-2000

-2000

-2000

-2000

-2000

-2000-2000

-2000

-2000

-1000

-1000

-1000

-1000

-2000

-2000-2000

-1000

-1000

-1000-1000

-1000

-1000-1000

-1000

-1000

-1000-600

-600

0

-600

-6000

-600

-1000

-1000

-1000

-1000

-1000

-1000-1000

-1000

-1000

-600

-600

0

0

-1000

-1000-1000

-600

-600

-600-600

-600

-600-600

0

0

00

140

210

280

350

420

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

30"

180.0

20"

615.0

133/8"

1845.0

TD@2620m

327.4


628.1

Upp. ManganuiFormation

771.5


979.0

Sw sand

1009.5


1237.0

M2A sand

1248.5


1303.9

Moki Formation

1630.5


1867.9

TaimanaFormation

1925.5

TikorangiFormation

2038.0

OtaraoaFormation

2060.9

Turi Formation

2073.0


shale

2087.0


sand

2410.0


sand

Plio

-Ple

isto

cene

Mio

cene

Eoc

ene

no d

ata

Pal

eoce

ne-E

ocen

e

350

Wn-

Wc

430

no d

ata

540

Wp-

Wm

640

no d

ata

840

lwr T

t

940

no d

ata

1040

Sw

1650

Sl

1685

no d

ata

1740

Sc

1752

no data

1896

Pl

1972

no d

ata

2059

Lw-P

o

2076

Ar

2088

no data

2106

Ak

2112

no data

2400

Ab

2439

no d

ata

2620

Dt-D

m

-600

-600

-600

-600

-600

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-600

-600

-600-600

-600-600

-600-600

-600

-600-600

000

000

0

-1000

-1000

-1000

-1000

-1000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-1000

-1000

-1000-1000

-1000-1000

-1000-1000

-1000

-1000-1000

-400-400-400

-400-400-400

-400

140

210

280

350

420

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

30''

172.0

133/8'

698.0

TD@2200mMD

710

no d

ata

abov

e 71

0 m

MD

730

Upp Sw

1020

Lwr S

w

1690

Sl

1740

Upp

-mid

Sc

1850

Lwr S

c

1860

Upp Pl

1870

Mid Pl

1900

Lwr P

l

2020

Po-

Lw

2094

no d

ata

Late

Mio

cene

Mid

dle

Mio

cene

Ear

ly M

ioce

ne

No

sam

ples

avai

labl

e

580.5


984.6

Sw sand

1003.2


1226.7

M2A sand

1242.9


1290.8

Moki Formation

1612.0


1839.0

TaimanaFormation

1900.0

TikorangiFormation

2009.0

OtaraoaFormation

2018.0

MatapoSandstone

Member

2028.5

Turi Formation

2056.0

MangahewaFormation,

C sand

400

400

-2000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

400

0

-1000

-1000

400

-1000

-1000

-2000

-2000

-1000

-2000

-2000

-2000

-1000

-1000

-2000

-2000

-1000

-1000

-2000

400

-2000

-1000

-1000

-2000

400

-2000

-2000

-2000

-1000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-1000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-1000

-2000

-2000

-2000

0

0

-1000

-800

-800

-800

-800

-800

-800

-600

0

-800

-600

0

-600

-600

-1000

-1500

-800

-1000

-1500

-1000

-600

-600

-1000

-1000

-600

-600

-1000

0

-1000

-600

-800

-1000

0

-1000

-1000

-1000

-600

-1000

-1000

-1500

-1000

-1500

-1500

-1500

-800

-1500

-1500

-1500

-1500

-1500

-1000

-1000

-800

-1000

-1000

-1000

140

210

280

350

420

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

30"

161.5

95/8"

677.1

[email protected]

1370

Po-

Sl

565.5


725.6

Tt sand

729.3


975.6

Sw sand

990.8


1242.2

M2A sand

1253.0


1303.8

Moki Formation

Ear

ly-M

idM

ioce

ne

-2000-1000

140

210

280

350

420

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

30"

169.0

20"

506.0

TD@1822mMD

640

?ear

ly T

t

740

Sw

-ear

ly T

t

1103

Sw

1363

late

Sl

1680

early

Sl

1778

Sc

1822

Pl


510.2


682.5

Tt sand

699.5


960.0

Sw sand

1005.5


1281.0

M2A sand

1284.0


1344.0

Moki Formation

1675.9


0

400

400

-1000

-1000

-1000

-1000

-2000

-1500

-1500

-1500-1500

-600

-1500

-1500

-2000-2000

-2000-2000

-2000-2000-2000

-600

-2000

-1500

-2000

-1500

-1500

-1500

-2000

-2000

-2000

-2000

-2000

-2000-2000

-2000

-2000

-1500

-1500-1500

-1500

-1500-2000-2000

-1500-1000

-2000

2000

0

0

-800

-800

-800

-700

-1500

-700

-700

-700-700

0

-600

-600

-1000-1000

-1500-1500

-1500-1000-1000

-600

-1000

-800

-1000

-800

-800

-700

-1000

-1000

-1000

-1000

-1500

-1500-1500

-1500

-1500

-600

-800-700

-700

-800-1500-1500

-800-700

-1500

1500

Mio

cene

140

210

280

350

420

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

2870

2940

3010

3080

3150

3220

291/2"

145.7

16"

324.6

95/8"

1819.1

7"

2123.9

324.0


413.5


492.8

Tt sand

500.0


716.9

Sw sand

773.5


1257.3

M2A sand

1262.0


1329.0

Moki Formation

1707.0

Lwr ManganuiFormation

1998.0

OtaraoaFormation

2011.6

Turi Formation

2030.0

MangahewaFormation,

C sand

2265.5

FarewellFormation,

E sand

2797.0

North CapeFormation

414.0

Wo

463.0

Tt-T

k

600.8

lwr T

t

637.4

Sw

-Tt

765.6

Sw

899.8

Sl-S

w

1381.8

Sl

1497.6

Sc-

Sl

1753.8

Sc

1796.4

Pl-S

c

1863.6

Pl

1881.0

Po-

Pl

1900.2

Po

1909.0

Lw-P

o

1952.0

Lw

1990.1

lwr L

w

1997.8

Ld-lw

rLw

2008.0

Ld

2029.5

upp.

Lwh

2258.8

Ab-

Ak

2465.6

Dt-D

w

2712.7

Dt

2743.2

Mh-

Dt

3240.0

Upp

erM

h

Plio

cene

Late

Mio

cene

Mid

-Lat

eM

ioce

neM

id M

ioce

neE

arly

-Mid

Mio

cE

arly

Mio

cene

Late

Olig

ocen

eM

id-L

ate

Eoc

ene

Pal

eoce

ne-E

arly

Eoc

ene

Pal

eoce

ne?

Late

Cre

tace

ous

-600

-600

-600

-600-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600-600

-600

-600-600

-600

-600-600-600

-600-600

-1000-1000

-1000

-1000

-1000

-1000-1000

-1000

-1000

-1000

-1000

-1000

-2000-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000-2000

-2000

-2000-2000

-2000

-2000-2000-2000

-2000-2000

-2000-2000

-2000

-2000

-2000

-2000-2000

-2000

-2000

000

0

0

0

00

0

0

70

140

210

280

350

420

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

30"

161.0

20"

249.0

133/8"

556.0

95/8"

1541.0

TD@2727m

Plio

-Ple

ist.

Late

Mio

cene

Mid

-Lat

e M

ioce

neM

id M

ioce

neE

arly

-Mid

Mio

cene

Ear

ly M

ioce

neO

lig.-

E.M

ioc.

Eoc

.-Olig

.E

ocen

eP

aleo

cene

no d

ata

Cre

tace

ous

293.3


645.0

Sw sand

691.0


1196.7

M2A sand

1213.5


1282.1

Moki Formation

1567.1


1821.0

TaimanaFormation

1936.0

OtaraoaFormation

1975.0

MatapoSandstone

Member

1990.6

Turi Formation

2009.9

MangahewaFormation,

C sand

2121.8

FarewellFormation,

E sand

2247.8

North CapeFormation

2429.3

Wainui Member

2669.0

Basement

293

Wn-

Wc

338

Tt

429

Sw

-Tt

558

Sw

677

Sl-S

w

1451

Sl

1600

Sc

1652

Pl-S

c

1850

Pl

1902

Po-

Pl

1905

Po

1942

lwr L

w

1975

Lwh-

Lw

2006

Ar-

Lwh

2118

Dw

-lwr A

b

2246

Dt

2469

no d

ata

2624

Mh

0

0

400

-600

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000-2000

-2000

-600

-600

-600-600

-600

-600

-600-600

00

00000

0

0

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600-600

-600

0

0

00

0

0

00

Enclosure 4

Well correlation panel: Kea-1, Moki-1, Maari-1, Maari-2, Moki-2A, Maui-4, North Tasman-1


LEGEND

Matapo Sandstone

Member

Matapo SandstoneMember

?

Page 1

Depth

(m brt)

Pukeko-1HCAL

4 24inches

ECGR

0 150GAPI

DT

240 40us/ft

SP

-60 100 mv

RHOZ

1.95 2.95g/cc

Inte

rpre

ted

litho

logy

TNPH

0.45 0.1v/v

Water Depth

Elevation (m)

100 -2000

Cas

ing

Fo

rmat

ion

Ep

och

NZ

Sta

ge

Bio

Sam

ple

Depth

(m brt)

Te Whatu-2CALS

4 24inches

DT

240 40us/ft

GR

0 150GAPI

NPHI

0.45 -0.15v/v

RHOB

1.95 2.95g/cc

SP

-60 100 mv

Cas

ing

Fo

rmat

ion

Ep

och

NZ

Sta

ge

Water Depth

Elevation (m)

100 -2000

Inte

rpre

ted

litho

logy

Bio

sam

ple

Depth

(m brt)

North Tasman-1CALI

4 24inches

DT

240 40us/ft

GR

0 150GAPI

NPHI

0.45 -0.15v/v

RHOB

1.95 2.95g/cc

Cas

ing

SP

-60 100 mv

Water Depth

Elevation (m)

100 -2000

Ep

och

Inte

rpre

ted

Lith

olog

y

Fo

rmat

ion

NZ

Sta

ge

Bio

sam

ple

Depth

(m brt) Cas

ing Water Depth

Elevation (m)

100 -2000

Tasman-1FDC

1.95 2.95G/CC

Inte

rpre

ted

litho

logy

DT

240 40us/ft

CALI

4 24inches

EGR

0 150GAPI

Fo

rmat

ion

SP

-60 100 mv Bio

sam

ple

SNP

45 -0.15v/v

NZ

Sta

ge

Ep

och

Depth

(m brt)

Motueka-1CALS

4 24inches

DT

240 40us/ft

GR

0 150GAPI

NPHI

0.45 -0.15v/v

RHOB

1.95 2.95g/cc

SP

-60 100 mv

Cas

ing

Fo

rmat

ion

Ep

ochMu

dlo

g Water Depth

Elevation (m)

100 -2000

NZ

Sta

ge

Bio

sam

ple

Depth

(m brt)

Surville-1CALI

4 24inches

DT

240 40us/ft

GR

0 150GAPI

NPHI

0.45 -0.15v/v

RHOB

1.95 2.95g/cc

Mu

dlo

g

Cas

ing

Fo

rmat

ion

SP

-60 100 mv

Ep

och

NZ

Sta

ge

Water Depth

Elevation (m)

100 -400Bio

sam

ple

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

2870

2940

3010

3080

3150

3220

3290

3360

3430

3500

3570

3640

3710

3780

3850

3920

3990

4060

4130

4200

0

-600

-600

-600

-1000

-1000

-1000

-1000

-1000

-1500

-1000

-1000

-600

-6000

0

133\8"

1494.4

121/4"

3184.5

TD@419


2441.5

Tt sand

2457.9


2530.8

Sw sands

2581.0


2873.3

M2A unit

2910.5


2967.0

Moki FormationEquivalent

3098.7


3155.0

TikorangiFormation

3200.0

OtaraoaFormation

3229.5

MatapoSandstone

Member

3238.6

OtaraoaFormation

3248.0

Turi Formation

3276.0

MangahewaFormation,

C shale

3291.0

MangahewaFormation,

C sand

3512.0

KaimiroFormation,

D sand

3658.1

FarewellFormation,

E and F sands

4018.0

North CapeFormation

4178.0

Basement

Late

Mio

cene

Mid

-Lat

e M

ioce

neL.

Olig

.- E

.Mio

c.nd

Eoc

ene

Pal

eoce

neLa

te C

reta

ceou

s

2510

Lwr T

t

2620

nd

2990

Sw

3145

nd

3150

Sc

3210

nd

3220

u.Lw

-Po

3245

nd

3265

Ar

3280

nd

3285

lwr

Ak

3305

nd

3420

Dp-

lwr A

k

3445

nd

3465

Dh-

Dp

3505

Dh

3525

nd

3710

Dw

-Dp

3740

nd

4002

Dt

4025

nd

4175

Mh

-600

-1000

-1000

-1000

-1500

-1500

-1500

-1500

-1500

-2000

-2000

-2000

-1000

-1000400

400

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

2870

2940

3010

3080

3150

3220

3290

3360

3430

3500

3570

95/8"

3032.0

TD@3542m

1630.4

Tt sand ?1

1639.0


2001.0

Sw sands

2021.2


2248.9

M2A unit

2272.3


2344.8

Moki Formation

2485.2


3042.4

TaimanaFormation

3102.0

OtaraoaFormation

3141.0

Turi Formation

3174.0


sand

3284.0

KaimiroFormation, D

sand

3441.2

FarewellFormation, E and

F sands

Late

Mio

cene

Mid

-Lat

e M

ioce

neM

id M

ioce

neE

. Mio

cene

L.E

oc.-E

.Olig

.La

te E

ocen

eE

arly

Eoc

ene

1800

low

er T

t

2200

Sw

2700

Sl

3035

Sc

3100

Pl

3171

Ar-

Lwh

3441

Ar

3505

Dw

-600

-600

-600

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

0

00

0

0

0

-600

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-600

-600

-600

140

210

280

350

420

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

2240

2310

2380

2450

2520

2590

2660

2730

2800

30"

161.0

20"

249.0

133/8"

556.0

95/8"

1541.0

TD@2727m

Plio

-Ple

ist.

L.M

ioc.

Mid

-Lat

e M

ioce

neM

id M

ioce

neE

-M.M

ioc.

Ear

ly M

ioce

neO

lig.-

EM

ioc

Eoc

.-Olig

.E

ocen

eP

aleo

cene

no d

ata

Cre

tace

ous

293.3


658.0

Sw sand

691.0


1196.7

M2A unit

1213.5


1282.1

Moki Formation

1567.1


1821.0

TaimanaFormation

1939.0

OtaraoaFormation

1969.8

MatapoSandstone

Member

1990.7

Turi Formation

2009.9

MangahewaFormation,

C sand

2121.8

FarewellFormation,

E sand

2247.8

North CapeFormation

2429.3

Wainui Member

2669.0

Basement

293

Wn-

Wc

338

Tt

429

Sw

-Tt

558

Sw

677

Sl-S

w

1451

Sl

1600

Sc

1652

Pl-S

c

1850

Pl

1902

Po-

Pl

1905

Po

1942

lwr L

w

1975

Lwh-

Lw

2006

Ar-

Lwh

2118

Dw

-lwr A

b

2246

Dt

2469

no d

ata

2624

Mh

0

0

400

-600

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000-2000

-2000

-600

-600

-600-600

-600

-600

-600-600

00

00000

0

0

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600

-600-600

-600

0

0

00

0

0

00

0

70

140

210

280

350

420

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

0.0

291/2"

113.1

16"

293.8

95/8"

982.6

TDat1629mMD

300.0


815.0


851.5

Sc-Sl sand,?Moki lateral

equivalent

1009.0


1305.5

TaimanaFormation

1407.0

TikorangiFormation

1466.0

OtaraoaFormation

1538.8

Turi Formation

1559.0

Basement

-600

-600

-1000

-600

-600

-600

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000

-1000-1000

-1000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000

-2000-2000

400

400

400

400

400

355

no d

ata

360

Sl-l

wTt

433

no d

ata

945

Sl

981

no d

ata

1120

Sc

1148

no data

1234

upp.

Pl

1235

mid Pl

1312

no d

ata

1313

Po

1349

no d

ata

1399

lwr L

w

1429

Lw-L

d

1484

Ld

1508

Lwh-

Ld

1518

no data

1533

Lwh

1551

no data

1552

Ak-

Ar

no d

ata

Mid

dle-

Late

Mio

cene

Mid

dle

Mio

cene

ndE

arly

Mio

cene

ndLa

te O

ligoc

ene

L.E

oc.-O

lig.

ndM

-LE

ocen

e

0

70

140

210

280

350

420

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

1540

0.0

30"

157.8

20"

264.0

133/8"

567.0

TD@1567m

103.3


385.3

Sl sands, ?Mokilateral equivalent

(MotuekaMember)

578.7

TarakoheFormation,

Lower Manganuiequivalent

813.8

Sl sand

855.0

TarakoheFormation,

Lower ManganuiFormationequivalent

1400.0

KaipukeFormation,Taimana

Formationequivalent

1542.5

Takaka/TikorangiFormation

1547.2

Basement

Plio

cene

Ear

ly-M

id M

ioce

ne

0

0

0

00

0

0

0

0

0

0

400

0

0

400

400

-600

-1000

-1000

-2000

-2000

400

-600-600

0

0

-600

000

00

0

0

0

-600

-600

-600

-600

00

0

316

Wo-

Wp

380

Wo

404

no data

415

Sl-S

w

974

Sl

1025

no d

ata

1075

Sc

1139

no d

ata

1275

upp.

Pl

1325

mid

Pl

1375

low

er P

l

1426

no d

ata

1535

low

er P

o

1545

no data

1547

Lw

0

70

140

210

280

350

420

490

560

630

700

770

840

910

980

1050

1120

1190

1260

1330

1400

1470

1540

1610

1680

1750

1820

1890

1960

2030

2100

2170

0.0

30"

83.3

20"

175.0

133/8"

405.9

95/8"

997.6

TD@2202m

0.0


200.0

Non marinesandy facies inTarakohe Fm.

(Lower ManganuiFormationequivalent)

320.0

Silty sand intraTarakoheFormation

(Lower ManganuiFormation

equivalent)

510.0

TarakoheFormation

(Lower ManganuiFormationequivalent)

1110.0

Taimana/KaipukeFormation

1410.0

TaimanaFormation

(sandy facies)

1497.0

TakakaFormation

1533.0

Abel HeadFormation (Otaraoa

Formationequivalent)

1630.0

Abel HeadFormation

2063.0

Arkosesandstone

2156.0

?SeparationPoint Granite

Hol

ocen

eno

dat

aE

arly

Mio

cene

Olig

ocen

e

90

Rec

ent

410

no d

ata

552

Pl

1059

lw-m

id P

l

1185

no d

ata

1353

upp.

Lw

-Po

1401

no d

ata

1491

low

er L

w

1572

no d

ata

1596

Ld-L

w

2052

Lwh-

Ld

Matapo SandstoneMember

Matapo Sandstone

Member

Giant Foresets Formation



Enclosure 5

Well correlation panel: Pukeko-1, Te Whatu-2, North Tasman-1, Tasman-1, Motueka-1, Surville-1

Datum: Taimana Formation top

LEGEND

Matapo SandstoneMember equivalent

?

Page 1

Documents

SR 2013-27 Stratigraphy offshore Taranaki Basin 2013-027.pdfseismic lines, calibrated to well stratigraphy, is being interpreted to establish the regional seismic stratigraphic framework,