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Stratigraphic, volcanologic and
sedimentological architecture of the
Swayze area, Abitibi greenstone belt
Swayze Timmins
DPFZ
Swayze?
DPZ
Kapuskasing
structural zone
Nat River
complex
Kenogammisi
batholith
Foleyet timber
Rd.
Mallard Rd.
RDZ
Swayze greenstone belt – Geology map
Major deformation zones
Deerfoot DZ
Slate Rock DZ
Ayer and Trowell (2002)
Swayze greenstone belt – Nomenclature and general Stratigraphy
1) Overall goals
2) People
3) Historical mining and known deposits
4) The sedimentary basins of Swayze –
unconformities, provenance and depositional
timing
5) Sedimentary interface zones – the importance
of banded iron formation for the Swayze
stratigraphy and syngenetic mineralization
6) Geochronology map of Swayze: The emerging
of different volcanic terrains
7) Future work
8) Bonus slide – preliminary seismic profile
through Swayze
Agenda
Through transect mapping and transect scale research
the goals are to:
The Swayze transect – Overall Goals
Identify and map critical rock units throughout the belt
Improve the stratigraphy and architecture of key volcanic
and sedimentary successions and their internal
relationships (thereby improving further geophysical
interpretations - e.g., seismic and MT)
Solve the question whether the volcanic stratigraphy
represents a continuum or its comprised of an
amalgamation of unrelated volcanic terrains?
Assess the potential for base and
precious metal mineralization
Tom Gemmell (OGS and PhD student w. Metal Earth)
Arthur Blake, Msc (2017-2019) - Jefferson VMS deposit
Sean Hofman, Bsc (2017-2018) - Jefferson VMS deposit
Colt Meyer, Bsc (2017-2018) - Erosional unconformity
Lawraine Mogashoa Msc (2018-2020) - Geological and
Geophysical modelling
Rasmus Haugaard (Metal Earth)
The Swayze transect – People
Msc and Bsc students
DPZ
Kapuskasing
structural zone
Nat River
complex
Kenogammisi
batholith
Foleyet timber
Rd.
Joburke: 49.000 oz Au
Jerome: 57.000 oz Au
Côte Gold
deposit:
>8 Moz
Rundle
deposit
Kenty
deposit
Jefferson VMS
prospect
Swayze - known deposits and mine sites
Swayze: 106.000 oz Au
(Abitibi greenstone belt: 180 Moz Au)Major deformation zones
Namex
deposit
DPZ
Kapuskasing
structural zone
Nat River
complex
Kenogammisi
batholith
Foleyet timber
Rd.
The Swayze transect – The sedimentary basins of Swayze
North Swayze basin
South Swayze basin
<2690 Ma
<2696 Ma
<2688 Ma
The Swayze transect – South Swayze basin
N
The Swayze transect – South Swayze basin
Tonalite ~2730 Ma
Conglomerate
The Swayze transect – South Swayze basin - Unconformities
Granite
boulder
The Swayze transect – South Swayze basin - Unconformities
The Swayze transect – South Swayze basin - Unconformities
DPZ
Kapuskasing
structural zone
Nat River
complex
Kenogammisi
batholith
Foleyet timber
Rd.
The Swayze transect – The sedimentary basins of Swayze
North Swayze basin
South Swayze basin
<2690 Ma
<2696 Ma
<2688 Ma
The Swayze transect – North Swayze basin
Conglomerate
Conglomerate
Sandstone
Sandstone
Conglomerate
South Swayze sandstone
North Swayze sandstone
The Swayze transect – The sedimentary basins – Detrital zircons
2690 Ma
2725 Ma
2820 Ma 2890 Ma
n=113< 5% discordant (113/159 total)
2700 Ma
Age (Ma)
South Swayze sandstone
South Swayze sandstone
Hwy 101
<2696 Ma <2688 Ma
50 Kilometers
.Foleyet Timber Rd.
Hwy 101
<2696 Ma
50 Kilometers
.Foleyet Timber Rd.
Kukatush porphyry
The Swayze transect – Depositional timing of the North Swayze basin?
Sedimentary basin
Kapuskasing
structural zone
Nat River
complex
Kenogammisi
batholith
The Swayze transect – The importance of BIF
Nat River BIF
Mallard BIF
Jasper Hill BIF
Jefferson BIF
>20
0 m
dep
th
Fe2+ Fe3+
Fe rich layer Fe rich layer Fe rich layer
Si rich layer Si rich layer
Fe rich layer
Biologic Fe(II) oxidation
Abiotic silica precipitation
Fe(OH)3
Si(OH)4
Haugaard et al. 2013
Depositional rate = 1 cm/400-500 year = 20-25 m/Myr
The Swayze transect – The importance of BIF
The Swayze transect – The importance of BIF
Kapuskasing
structural zone
Nat River
complex
Kenogammisi
batholith
The Swayze transect – The importance of BIF
Nat River BIF
Mallard BIF
Jasper Hill BIF
Woman River
BIF
2735±5 Ma
The Swayze transect – Msc project - The Woman River BIF
Blake et al., 2018
Sphalerite, galena and chalcopyrite
Best intersection: 7.27% Zn over
8.50m
The Swayze transect – The Woman River BIF
BIF
Argillite
Felsic volcanic
Footwall
Hanging-wall
Mafic volcanic Tisdale?
Deloro
N
Chlorite +
sericite
alteration
The Swayze transect – The Woman River BIF
Stockwork alteration
1. Further strengthen the stratigraphy
(chronostratigraphy and chemostratigraphy of
the volcanic rocks)
2. Improving the geological architecture such as
important terrain boundaries can be
determined
3. Implement the high-resolution seismic data,
especially the R2 (<10 km depth)
4. Constraining the nature, provenance and, if
possible, the depositional timing of the North
Swayze basin
Future work
Acknowledgements: Peter MacDonald (OGS); Charlie Mortimer; Pat
Pope and Mary Stalker (GFG Resources); IAMGOLD