Target for Arcgis

- - --,.-'.,\

GEOSOFT

Target for ArcGIS ICourse Manual

--~-

(-

'\

')

The software described in this manual is fumished under license and may only be used or copied inaccordance with the terms of the license.

Manual release date: February-14-12.

2012 Geosoft Ine. Al! rights reserved. Geosoft is a registered trademark and Oasis montaj is aregistered trademark of Geosoft Inc. Other brand and product names mentioned herein are properties oftheir respective trademark owners. No part of this publication may be reproduced, stored in a retrievalsystem or transmitted, in any form, or by any means, electronic, mechanical, photocopying, reading, orotherwise, without prior consent from Geosoft Inc.

The software described in this manual is fumished under license and may only be used or copied inaccordance with the terms ofthe license. TFAl.cm.2012.02

Windows TM, and Windows NT are either registered trademarks or trademarks of Microsoft Corporation.

Geosoft IncorporatedQueens Quay Terminal207 Queens Quay WestSuite 810, PO Box 131Toranto,OntarioM5J 1A7CanadaTel: (416) 369-0111Fax: (416) 369-9599

Web Site: www.geosoft.com

E-mail: [email protected]

'\

'\

')

\

')

)

')

')

)'\

Table of Contents

Table of Contents........................ i

Introduction: Target for ArcGIS................................................. 1

Module 1: Mapping Surface Data.............................................. 3

Lesson 1.1 Creating an MXD and Adding Data 4

Lesson 1.2 Displaying Data 11

Lesson 1.3 Creating Gridded Data 19

Lesson 1.4 Creating Geosoft Contours 32

Module 2: Managing Drillhole Data 43

Lesson 2.1 Creating a Drillhole Project and Importing Data 44

Lesson 2.2 Working with Geosoft Databases and Profiles 58

Lesson 2.3 Using QA/QC Tools 69

Lesson 2.4 Creating Composite Databases 73

Lesson 2.5 Using Drillhole Data Management Tools 76

Module 3: Mapping Drillhole Data 83

Lesson 3.1 Selecting Drillholes 84

Lesson 3.2 Creating a Plan Map 87

Lesson 3.3 Creating a Section Map 104

Lesson 3.4 Creating a Fence Diagram 121

Lesson 3.5 Creating a Strip Log. 126

Lesson 3.6 Creating a3D Map 134

VI/V';\!:! .oecsot.ccm Target for ArcGIS I i

Table of Contents

")

1'""1

'""1

1)

1

)

'""1

")

)

1"\

)

1

1)

l'\

\'\

)

')

1)

\

'\)

1

ii ITarqet tor J\rcGIS I v,o..vv.,/ .geosoft.com1'\

\

lntroduction: Target tor ArcGIS

Target for ArcG ISTarget for ArcGISTM is a surface and drillhole mapping extension to ESRI'sArcGIS software that simplifies the visualisation, mapping and analysis ofsubsurface drillhole and borehole geology data within your ESRI GIS environment.Built onthe same technology as Geosoft's industry-Ieading Oasis montajsoftware, Target for ArcGIS adds powerful spatial data processing capabilitiesand 3D viewing to your GIS.

About this Training ManualThe Target for ArcGIS I course manual is for use in a classroom setting with aqualified Geosoft instructor. Your instructor is available throughout the course toanswer any questions you may have.

Each module in this book contains a series of hands-on lessons that let you workwith the software and a supplied dataset. Lessons have brief introductions followedby tasks and procedures in numbered steps.

The following modules are included in this course:

);, Module 1 - Mapping Surface Data

;:, Module 2 - Managing Drillhole Data

}> Module 3 - Mapping Drillhole Data

Course DataThe data used in this course is contained in a folder called Geosoft Training Data.Please copy the whole folder of data to yourC:\ drive or other hard drive where youhave at least 200 MB of available space.

VJV'V-J .geosoIT.com Target fcr ArcGIS 111

Introduction: Target for ArcGIS

11)

1

'\

'1

)

)

)

'\')

"\

'\

2 ITarqet for f\rcGIS VJ\N\V.g2:0S0n.com

"\

)

)

')

'\

"\

)

1

Module 1: Mapping Surface Data

Module 1 has Four Lessons:~

~ Lesson 1.1Lesson 1.2

Lesson 1.3"\

Lesson 1.4"\

~

"\

.----.,

~~/"',\

r-,

V'\AfVIf .9 e o so ft.co m

Creating an MXD and Adding Data 4

Displaying Data 11

Creating Gridded Data 19

Creating Geosoft Contcurs 32

Tarqet for ArcGS 113

Module 1: Mapping Suriace Data

Lesson 1.1 Creating an MXD and Adding Data

In thls lesson you will::> Create a new map document

:; Add data layers

;:, Add x, y tabular data and assign a coordinate system

~ Save the map document

Creating an MXDAn .MXD is the native map file format for ESRI ArcGIS. It contains the map, itslayout and associated layers, as well as information about how those layers aredisplayed. You will begin by creating a new ArcGIS map document.

To create and save an MXD:

1. Start ArcMap.

The ArcMap starting dialog box opens.

Fig ure 1.1 ArcMap starting dialog box

2. Ensure BJank Map is selected and click OK.

3. From the FiJe menu, select Save.

4. Locate the Geosoft Training Data folder.

This is the location where all your data output will be saved.

4 I Target for I\rcGlS I www.qeosott.corn

')

-1

-,')

-----.

V\/\V\!J .gecsoft.com

Lesson 1.1 Creating an MXD and Adding Data

5. Forthe File name, enterTarget for ArcGIS Surface Mapping.mxd and clickSave.

Now that you have started ArcMap and created an .MXD file, you will display theTarget for ArcGIS toolbars.

Displaying Target for ArcG 18ToolbarsOnce you have installed Target for ArcGIS and opened ArcMap, you need todisplay the Geosoft Target for ArcGIS toolbars. The toolbars can then be dockedin various locations.

To display the Target for ArcGIS toolbars:

1. From the Customize menu, select Toolbars and then select GeosoftDatabase.

The Geosof Extensions Setup and DAP toolbar opens.

2. Repeat step 1 to display the Geosoft Extensions Setup and Seeker, TargetDrillhole andTargetSurface toolbars.

You will now add data to your map document.

Adding DataThe geographic data you add to your map is represented as a layer in the map'sTable of Contents. You can add data from folders (such as shapefiles and Geosoftgrids) and from databases.

To add data to a map:

1. On the Standard Toolbar, click the Add Data button ~:'.

The Add Data dialog box opens.

2. Locate the Geophysics folder.

3. Hold down the CTRL key, select mag_MC.grd and magnetics.shp and c1ickAdd.

The mag_MC.grd and magnetics.shp layers are Iisted in the Table Of Contentsand displayed in the map display area. By default, the mag_MC grid isdisplayed as greyscale.

Target ter ArcG!S 115

,-


Figure 1.2 Dataaddedtomap

~'1~~

i! .. Jfi---------'l b,i I""~ iI '; h;mr;;':":2.~,;}.':&z2'J{f.'~"'!:'"i.~-.;:.'"f::jf;;'~~;:'~;;;;:;;;:~%k~~~:;*:

Lesson 1.1 Creating an MXD andAdding Data

Figure 1.3 Add 'Xi Data dialog box

Spedfy me elds for fue X,.Y and Z coordilate~:

XF.ield,

, Y Field:

~.Caordinate Sy!:terT~I.Qf ln.pu.t CCY.Irdi1at~s

'~:'.:~~:~~:_._._._-_._----_...:._--~._-_.._------_.-Prciected Coordin:2re. Sys~:Name: GDA_19943~A_Zone_50

Geogrcphk Cccrdlna te s)"Stem:Neme: GCS_GDA_1994

2. Click the Browse button~.

The Add dialog box opens.

3. From the Geochemistryfolder, select geochemistry_mga.csv and click Add.

4. From the X Field list, select East.

5. From the Y Field list, select North.

6. Click Edit.

The Spatial Reference Properties dialog box open.

\V\VV-J .geosoft.com Tarqet tcr ArcG!S! 17


Figure 1.4 Spatial Reference Properties dialog box

Geographic Coordinate System: GCS_GDA_1994A.'1gu!arUnir: cec-ee (O.0174SJ29Z519S43299)Prime ~l.idiaru Greenwich (0.000000000000000000)

'DatlJ!!\: D_GDA_19S4 Sp~roid; GRS_1930

Projectcn: Trar.sveseJ"'lercatorFalse_Easting: 5000QC.OOOOOQF~lse_f\J;:rth119:10000000,000000Central_Mendian: 117.000000Scale_Fador: 0.999600l.tih;d._OCOr>~in: 0.000000lin.'" Uni~ MeL"I'(1.000000)

' .. :

1\

DetaUs:

bj~~L,I~.Ltl";,,,J1"i",!:!~"",,;,1I"Jct\!?j!'l.".:~:.:lflbj,,:,9~'lr;.i"':,jl

t"s!'y.\',.;s",,",

Seiect a predened cocrdoete system.

Impert a coordinate system and X/'f, 2 and ~1domans frcm an ex:::ting geoda~set (e.g.feeture deteset, feature dess, rester),

Create a new cccrdnete system.

Edit the prcoerues cf tr.e currently :sel~c~coordnate svsten.

sets he cccrdlnate svetem to Unkno .en.

___ M. _

-1)

'\

)')

seve the c.oordif'late systern to afi!,..

7. Click Select

The Browse for Coordinate System dialag box opens.

8. Double-click the Projected Coordinate System folder and locate the NationalGrids then Australia folders.

9. In the Australia falder, select GDA 1994 MGA Zone 50.prj and click Add.

The details forthe selected coordinate system are Iisted in the top ofthe SpatialReference Properties dialog box.

10. Click OK.

The coordinate system is applied to the XY data and you are retumed to the AddXY Data dialog box.

11. Click OK.

A message window opens indicating the table does not have an Object-ID field.

12. Click OK.

The geochemistry_mga.csv Events layer is listed in the Table Of Cootents anddisplayed in the map display area.

-~----~--"_.--_._ ._---8 ITsrqet ror ArcGIS 1 v.v.,-,..lv.geoscrr.com

'WV/\N ,geosott.com

Figure 1.5 Tabular data added asX,Y Eventlayer

e E!I r.1~3_MC'!ird"'~I,,~

Il-!j9h:1707.S9l" .:...;5.5i125

The XY Event data (geochemistry _mga. csv Events) only exists in thecurrent map documento To save the layer as a separate ti/e, you must exportit as a shapefile orfeature class.

To save the layer as a shapefile:1. In the Table Of Contents, right-click the geochemistry_mga.csv Events layer

and select Data then Export Data.

The Export Data dialog box opens.

Figure 1.6 Export Data dialog box

Use th.e same coordinate system as:~.;"~)_thislayer's source data

C) \he data freme6 the feature datasat vo~'e)(poitll1e data nto .

(onlyapplles lf vou expcrt te a featcre .detaset in a qeodatabase)Cutput feeture dessr

2. ForOutput feature class, click the Browse button ~ .

3. Locate the Geosoft Training Data folder.

4. For Name, enter geochemistry.shp.

5. From the Save as type list, select Shapefile and click Save.

Tarqet tor \!"cGIS119

Module 1: Mapping ~~rface Data

6. Click OK.

An ArcMap message window opens asking if you would Iike to add the exportaddata to the map as a layer.

7. Click Yeso

The geochemistry .shp file s saved in the specified folder and is displayed as a. layer on your current map.

Because you have created a shapefile of the surface geochemistry data, you canremove the Events layer.

To remove the Events layer:

}- In the Table Of Contents, right-click the geochemistry_mga.csv Events layerand select Remove.

Saving a Map DocumentWhen you save a map document, the data itself is not saved, but rather it savesreferences to the data sources and their display properties.

To save your map document:

" From the File menu, select Save

-OK-

l> Click the Save button on the Standard toolbar.

Ji1 Ir you close your map document without saving it, you will be prompted tosave changes to your. MXD fije.

In this lesson you:, Created a new map document

~ Added data layers

:> Added x,y tabular data and assigned a coordinate system

l1> Saved the map document

10 ITarget for ArcGiS I www.qeoso.com)\..,

Lesson 1.2 Displaying Data

""\Lesson 1.2 Displaying Data

In thls lesson you will:" Change the grid display

:. Apply a colour ramp to your grid

1> Symbolise point data using colour and symbol sizes

). Manually classify symbol ranges

. Save symbolised points as a layerfile

Displaying Geosoft GridsGridded, or raster, data can be displayed on your map in a variety of ways, includingassigning different colour ranges, applying a shaded effect, and applyingtransparency.

You will begin by selecting the resampling method used to display the grid layer.Then, you will select a colour ramp and contrast stretch.

To change the grid display:1. In the Table Of Contents, right-click mag_MC.grd and select Properties.

The Layer Properties dialog box opens.

2. Click the Display tab.

Figure 1.7 Layer Proper1ies Displaytab

Contrast:i Srighme.s:I rrenscarencv:

, . 0i'P1.y C:-"at.ty1:ocrse. Medium

o % ;! TipS {U!ies primary displ3Y fteld)[] Dlspiay rester resoluton in table of contenta

[JAlIowinte~ctiye display for affects too:barI P.esas:tp!e dlJl'ing dIsplay usir.g:

Orthorectification

o 'fo

eeoa:

Normal

3. From the Resample during display using list, select Bilinear lnterpolaton(for continuous data).

This will give a smooth appearance to your raster data.

4. Click Apply .

._.-.~..~-" _..._. --"---www.qeosoft.corn Tarqet for f\rcGIS 111

,--


Now, you will select a colour ramp and the type of stretch you want to use.

To apply a colour ramp:

1. Click the Symbology tab.

Figure 1.8 LayerPropertiesSymbologytab

~mscete Colorl!

17e7.99

-465.825 tew : -465.825

'\')

Color velue LabD Display Background value:

BUs< bishade effect: Stretch

Tvpe:

n:.)

[j Appo'yGemma Stretch:

2. Right-click in the Color Ramp list and click to clear the Graphic View option.

The Color Ramp view switches from a graphic view to text.

3. From the Color Ramp llst, slect Geosoft Default.

4. Click Apply.

The Geosoft Default colour ramp is applied to the data; low values are shown inblue and as the values increase, the colours change from green to yellow,orange, red, and magenta.

Next, you will apply a stretch to increase the visual contrast of the data.

)')

To apply a contrast stretch:1. From the Type list in the Stretch section of the tab, select Histogram

Equalize.

The Compute Histogram message window opens asking you to compute ahistogram for this file.

')

')

'\

')

'\Figure 1.9 Compute Histogram messagewindow

6'~-'~. . j Histogram doesn't existo Do-ycu went to compute histogrilm'?,i!!Y

2. Click Yeso

3. ClickOK.

121 Tarqet for ArcCIS 1 www.qeosoft.corn

Lesson 1.2 Data

The grid is now displayed with a histogram equalize stretch. The magneticfeatures are now more prominent as there is a greater distribution of coloursrepresenting the high and low magnetic values.

Examine the coloured display of the grid layer. You may wish to tum off the displayof the magnetics and geochemistry point layers or change the display order of thelayers in yourdata frame.

To turn off the display of a layer:

:r In the Table Of Contents, clearthe check box beside the geochemistry layer.

This layer is no longer displayed.

To change the display order:

'" In the Table Of Contents, select the magnetics layer and drag it below themag_MC.grd layer.

The mag_MC.grd layer is now displayed on top of the magnetics layer.

Fig u re 1.10 Grid with coloured display

Symbolising Point DataNow that you have explored ways of displaying gridded data, you will display Auvalues from the surface soil geochemistry point layer. You will change the colourand proportional size of the symbols to reflect the quantity of Au at the samplelocations.

To symbolise point data based on quantity:

1. In the Table Of Contents, click the check box beside the gecichemistry layer.

This layer is now visible again.

2. Right-click the geochemistry layer and select Properties.

\/J\V\ltJ .gecsott.com Tarqet for ArcGiS 1113

---\

-----_._-------The Layer Properties dialog box opens.


Figure 1.11 Layer Properties Symbology tab for point data

~~-_.._--------_. __ ...__ .__ .__ .__ ._ ..__ ...._ ....__ ._----- .._--_.-_. __ .._. ~r;:.~-----IiOraw, all feenees ""'ng 11-..,seree o)'mbol. LIwP.9~.,;rii Svmbol

i ; kn;M3~u9;~".'id

I

I '::::".","~.~,_.ili"'=~.'._.._-i

: Additional descrbbon appearing next to the symbol in your rnap's legend

4. In the Show area en the left, c1ickQuantities.

ArcMap automatically selects Graduated colors.

F ig u re 1.12 Layer Properties Symbology tab wth Graduated colors selected

[Shcw:

11~=~. l. -----------I1 ~ VN"olrmuea:,:zation.: ~~~:. _ _ - !

'11 t~;::!~=.1' ':Oesses!! Charb Color Rcmp fiK~~jii-_i ~'I1 Muftiple Attribut"" -~;b:;--R:;.~;_..-------------...i..~~i---------------------!! iu

[J Show class ranpes using feeture veloee

1;

\--

\'\

"\

1

1'\

5. From the Value list, select Au.

_.. -'-_._--~---,14' Target ror ArcGIS I www.qeosott.corn

r.......,

Lesson 1.2 Displaying Data

The Symbol, Range and Label columns update to show the data classifiedbased on the natural statistical groupings of data values.

6. Forthe Color Ramp, select Geosoft Default.

7. Double-click the first class in the Symbol column.

The Symbol Selector dialog box opens.

Fig ure 1.13 Symbol Seledor dialog box

.'"

\

-----.

"

r---'\

"-.'\

\

8.

9.

Cirde 1 sqoee 1 Triangle 1Color. I.llI'I,;


Figure 1.14 Coloured pointsymbols

lf-"!

'1

)

. FiJe ',E1"n"'Vi~': B.coklmtrb-:tnicrt' : 5~~~on:.J;ieGp!ac~ng. CII~i:.e. .-':inda-~ Hflp\;::el 5._Iii.~':~~t~)~.~..~ >., :~.'.~.,!'.t.'~.:!i.~~.~~~.~~ ~-.._ ;:~:-!.~~~fi.~:~S ~~-O;~~.,:;~.t.tx" ~.: ~(~~~. ~.~:~:.:!..~~~i _~ ~r-);!~~~ G~:)lOftC't.a:):@S 5l.[~ ~~_~7;!9 8 ..'.,Helpo. ; GtosoFtSe!\'~.: 5kCm'" ~~ Help g~iiii;~,,;:~jiillHdp'i'i""."'

_____ . . . . ..Lesson 1.2 Dis..,elayingC!~~

Figure 1.15 Classification dialog box

'" 15e-,'" 2S

si116

275

20

'-.... 207 27570 139

91" ,..

2~~

The data in this example is log distributed; there is a lot of data in the low end andvery little data in the high end. Notice the Classification Statistics area in theClassification dialog box. The Mean for this data is 24 and the Standard Deviationis 23. You will use this information to determine the c1assification Break Values.

2. In the Break Values area, click the default values and enterthefollowingvalues:

25 Approximate Mean value

55 Mean value plus approximately 1 standard deviation

75 Mean value plus approximately 2 standard deviations

100 Mean value plus approximately 3 standard deviations

275 Maximum value

3. ClickOK.

4. In the Layer Properties dialog box, click OK.

The display of the symbols updates based on the manually defined c1asses.

www.qeosoft.corn Tarqet for ArcG!S! 117

18 ITarget torArcG!SI

Figure 1.16 Manuallyclassified pointsymbols

File. [dit" .v~: Bt~a~;.:iru_~-: Sd.c~o" ;G~?ra~&ing:Cur.or:1i:::e. .Win.;k"S He!p'1].6~ ~)..:~~~.-~~;::~::~~,i::~.:.~~~~!24___~--~_-~_:~:!.~r.iiiff~~ {""IO~: ::;,!::~.~"-~.ir.~J~,~..~j~}Dt ~ x~ )l:.~G~~.~~.ft:c~b.~iG:a!.i~,rs :al~, ~ ~_~! ~ E G~~,sQft5~u~" ,~k~JtI ~i ..Htlp;tlTIr;t.'I:5:..tril(:e_ lillli fi :p-;&El.':.e!p~ #1; TargetP~led:" , .~ . Sel~ction" V(Ud," t.. ~...-~,,:.'!f..~.i.9 t~ff..,.:-:~_ .~;'g .Hdp" ~

F:, 13 ~ItClC'emr.ryAv

2-'S. 2t. ~So S 75o 'ElOO010-113

~ ~ m~!lJ..:c.g!dV!lucm Hi:;I\:170:S9

::Low:~55.oS

Saving as a Layer FileA .LYR file saves the symbology attributes used to display the data. Because thisfile is saved on disk and exists outside your map, it can be reused so you do notneed to reapply the symbology; it can also be applied to another dataset withrelated values (e.g., regional Au data or another Au soil campaign) or shared withanother user.

To save the shapefile as a layer file:

1. In the Table Of Contents, right-click the geochemistry layer and select SaveAs Layer File.

The Save Layer dialog box opens.

2. If necessary, select the Geosoft Training Data folderfrom the Look in list.

3. Ensure the layer Name is geochemistry.lyr and click Save.

The layerfile is saved on disk.

In this lesson you:

l'I Changed the grid display

l> Applied a colour ramp to your grid

> Symbolised point data using colour and symbol sizes

,. Manually classified symbol ranqes

:.. Saved symbolised points as a layer file

www.qeoso.com

'"\

\

")

)

-"1

Lesson 1.3 Creating Gridded Data


In this lesson you will:11 Create a grid using the minimum curvature method

11- Create a glid using the minimum curvature advanced options

:> Create a grid using the kriging method

Grdding DataGridding data is the process of spatial interpolation. The process of gridding takespaint data and interpolates the readings to determine the values at the nades af agrid. The resulting interpalated dataset is known as a grid.

Figure 1.17 Gridding process

o' . ~.

'f): , ~:~.

:~:@..

'(lo..@I.

'e,' ' , .....-:. ~,.. . . .: : : O:b~erv~d:d~t~ .''''gri'Cli nods' .. . . . . ...--:".. . . . . . . . . . . ..~'

,:

Target for ArcGIS provides two methods for interpolating raw XYZ data to create agrid:

~. Minimum Curvature: Interpalates the data by fitting a minimum curvaturesurface to the raw XYZ data points. This method is ideal when data is sparselysampled and the surface is expected to be relatively smooth or continuousbetween data points.

:;, Kriging: Interpolates data using a geostatistical gridding method that usesKriging to determine a value at each grid node based on the XYZ data. It firstcalculates a variogram of the data, which shows the carrelation of the data as afunctian of distance.

Mnimum Curvature GriddingMinimum curvature gridding is a gridding method that fits a smoothest possiblesurface lo the data points, It is best used when data ls randomly distributed, whendata is sampled along arbitrary lines or if you want to include tie lines. The followingfigure iIIustrates these types of data:

v'v,fv"; .qecsoft.cor Tarqet for ArcGIS 1119

Module 1: Mapping Su~~ce D~~ .. . .

Figure 1.18 Data distributien suitable fer minimum curvature gridding

+

++

~+ +

+

+ +

Random Points Non-ParallelUnes Unes WitllTie Unes

If the data is relatively smooth between sample points or survey lines, minimumcurvature gridding should be used. If the data may be variable between samplelocations, or is known to be statistical in nature (such as geochemical data), ispoorly sampled or clustered, use the kriging method.

Minimum curvature gridding has the following strengths:

::. works with any spatial distribution of data

~ does not impose a directional bias

Determining Cel! SizeIf your data is distributed as random points, the cell size should be 1/4 to 1/2 of thenominal sample interval. If the cell size is not specified, the data points areassumed to be evenly distributed and the default cell size wil! be calculated as:

1/4 * (sqrt (grid area / # data points))

Because the geoehemical data is randomly distributed, it is difficult to manuallymeasure the nominal sample interval. In this lesson, you will grid the Au data usingthe minimum curvature method and have the algorithm determine the cel! size foryou. You will then run it again adjusting some of the advanced parameters.

To grid data using the minimum curvature method:

1. On the Target Surface toolbar, elick the Minimum curvature gridding fromtable in current document button ~.

The Seleet Table or Feature Class dialog box opens.

Figure 1.19 SelectTable or Feature Classdialog box

'"

")

'12. Seleet geochemistry and c1ick OK.

-------, "~-_.20 ITarqet for ArcGIS I \V"Y.V\V.gCOScTI.com


The Mnimum Curvature Gridding of attribute using feature positions in layerdialog box opens.

Figure 1.20 Minimum Curvature Gridding of atlribute using feature positions in layer dialog box

,

3. From the Atlribute to grid list, select Au.

4. For the Narne of new grid file, enter Au_MC.grd.

The Grid cel! size parameter is optional. By leaving it blank, the cel! size wil! becalculated automatical!y.

5. ClickOK.

The gridded data created using the minimum curvature gridding method issaved in yourworking directory and displayed in the map display area.

Figure 1.21 Minimum Curvature grid

6. Drag the geochemistry point layer on top of the grid.

The holes in the grid correspond to areas of no sample data. Later in this lessonyou wil! re-grid the data using several advanced options. One of these options isthe a blanking distance; this is the distance within which missing grid cel!values wil! be interpolated.

Now you will examine information about the grid that was just created.

To examine the grid properties:1. On the Tarqet Surface toolbar, click Target Surface then Grid Properties.

The Grid Properties dialog box opens.

V'\VV' .gecsoft.com Target ter ArcGiS ! 121

Module 1: Ma~pin~Suliace Data -----_.- ._---_.

Figure 1.22 Grid Properties dialog box

2. Click the Browse button [J and select Au_MC.grd.3. Click Next,

The Grid Properties dialog box opens.

Fig ure 1.23 Grid Properties dialog box

Grid file:

Grid element type:

Grid pcints in X direction:

Grid ucints in Y directicn:

x point s ep ereticn:

y point s eperetion:

Grid rcw orientetioru

X locetion of bottom left point:

Grid rctetion enqle:

Coordinate svsterru GDA94

Coordinate system units: . rnetre

Compression R.atio: 81,46%

4. Click Stats.

The Grid Statistics dialog box opens.

Figure 1.24 Grid Statisticsdialog box

Grid,File:

veltd Items:

[ .\Au_MC.ord(GRO)

13446

1470

. . .::......: : j '.::

;.',"Dummies:

Mnimum Velue:

Maximum Vetue:

; "13.0515747~._-.__ :...:._._.__ ...._ .._-_.....:._ ..~_.._.---.~....: ..-:.-....:: 275.535492 " . " """ "

...................................... :-~.".. ...~; 23.8853046Mean velue:

Standard Deviatlon: ,

G High and Low va/ues forgrid /ayers are a/so listed in the ArcMap Tab/e OfContents.

,"\

\5. Click Histogram.

The View Histogram dialog box opens and displays the grid histogram.

22 ITarqet ter ArcGIS I www.qeosoft.com


- \'--'"

\NW'.,f.j .qecsoft.com

Figure 1.25 View Histogram dialog box

Look at the statistics and the histogram. It appears that the data is log distributed. Ifyou compare the minimum and maximum value of the Au grid to those of the Aupoint layer in the Table Of Contents, you can see that these values are different.While the minimum curvature method attempts to create the smooth surface,because the Au data is log distributed, this linear grid does not fit the data very well.

You will now run the minimum curvature gridding again. This time you will specify agrid cell size of 25 m. You will also examine some of the advanced options,including the log option and the blanking distance.

To grid data using the minimum curvature advanced options:

1. On the Target Surface toolbar, click the Minimum curvature gridding from

table in current document button ~.

2. From the Select Table or Feature Class dialog box, select geochemistry andclick OK.

The Minimum Curvature Gridding of attribute using feature positions in layerdialog box opens and remembers the parameters you used the first time.

3. Forthe Name of new grid file, enter Au_MC_log.grd.

4. For the Grid cell size, enter 25.

5. Click Advanced.

The Minimum Curvature Gridding - Advanced Options dialog box opens.

Target for ArcGIS 11 23


Figure 1.26 Minimum Curvature Gridding - Advanced Options dialog box

.crd eell size j'

':,' .:..._ .._ ..~:~._.~~:.::..~'0'

xminY~inlxm~x/!max:

Lo~ o'p~ori~'

Log m~n.if\lum:.

25 ' '.",', ':.:---~...::~:;-c.~.:.-.;~~;~==:~J!V~,~r,;",':J:o;,""'C",;";;!;Cj;;.,,i,,,:,,",j":1Ei,r" ,~-.-_._---..---- ..--------1 ..

.. H.' H.H H. "\. _, .

99

Bt~~k!ng~ista~~~~;';;~.Tclerence:

% pesstolerencet. :

Maximum iterations: 100

Stertinq cee-se 9rid:

Starting search redius:

Interne! tension (0-1):

Cells to extend beyond data:

Weighting Power:

Weiohtino Slope (>-0.0): 0.0

The following are some of the key parameters that control the creation of the gridsurface:

l' Log Option: The logarithm (base 10) of the data can be gridded ratherthat theoriginal data. Once gridded, the output grid can be stored as eitherthelogarithmic data or it can be rescaled back to the original units. Gridding the logof the data can be a very effective way to reduce distortion due to highlyskewed data such as geochemical data.

,. Blanking Distance: AII grid cells farther than the blanking distance from a validpoint will be blanked out in the output grid. The default is the nominal sampleinterval, i.e. 2*(sqrt (grid area / #data points)). This parameter should be set tojust greater than the maximum sampling interval through which interpolation isdes ired. If there are too many holes in the resulting grid, increase the blankingdistance appropriately.

::1' Tolerance: The tolerance required for each grid cell (%). The default is 0.1percent of the range of the data. Decrease the tolerance for a more accurategrid.

" % Pass Tolerance: The required percentage of points that must pass thetolerance. The default is 99.0 percent. Increase this percentage for a moreaccurate grid.

li Maximum iterations: Iterations at the finest coarseness level will stop whenthe maximum number or iterations is reached (default is 100). At each greatercoarseness, the maximum iterations is reduced by 2. Increase this value ifmore iterations are required to produce a more accurate grid.

D Internal tension: The degree of internal tension (between O and 1). The default

1....."

1

')

1

241 Tarqet ror f\rcGIS I www.qeoso.com

Lesson 1.3 Gridded Data

is no tension (O),which produces a true minimum curvature grid. Increasingtension can be used to prevent overshooting of valid data in sparse areas,although curvature in the vicinity of real data will increase.

6. From the Log option list, select log, save as linear.

Because this is highly skewed geochemical data, the log option will be used.The log option transforms the data into log space, generates the grid based onthe transformed data and outputs the resulting grid back in linear space.

7. Forthe Blanking Distance, enter 225.

AII grid cells within this distance from a valid point will be interpolated. Grid cellsthat are further than this distance, will be left blank in the output grid.

You will use the intelligent defaults forthe remaining parameters.

8. Click Finish.

The gridded data created using the advanced options for the minimum curvaturegridding method is saved in yourworking directory and displayed in the mapdisplayarea.

Figure 1.27 Minimum Curvature grid with log option and blanking distance of225 m

9. Zoom in to the upper-Ieft comer of the grid.

10. Turn the display of the Au Me log grid on and off to compare the results.

W\W' .geosoft.com Tarqet for ArcGIS 1125


Figure 1.28 Left, Au_MC.grd; rightAu_MC_leg.grd

)

1

,\,

qlj You can also use the tools on the Effects toolbarto compare the grds.

KrigingKriging is a geostatistical gridding technique for random data, non-parallelline dataor orthogonalline data, as illustrated in the following figure:

F ig ure 1.29 Data'distributien suitable for kriging

++ +

r-e-+ +

+

Random, Clustered Poirrts Non-Parallel Unes Unes with Tie Unes

)

IUse the kriging method if the data is variable between sample locations, known tobe statistical in nature, poorly sampled or clustered. Kriging is ideally suited togeochemical or other geological sample-based data; it is rarely used withgeophysical data, which tends to follow a natural smooth surface.

It first calculates a variogram of the data showing the correlation of the data as afunctian of distance. The greaterthe distance between data polnts, the greaterthevariation between the points. Based on the variogram, you can select a model thatbest defines the variance of the data. Because kriging can be slow, the size of adataset may be a limiting factor in choosing kriging.

Kriging has the following strengths:

:,. ideal for clustered data

~ better control in anomalous or poorly sampled areas

You will now use the kriging method. You will first compute the variogram, adjustthe advanced options and then create the grid.

"1

"')'\')

26 ITarget for ArcGIS I www.qeosoft.corn


To compute the variogram:1. On the Target Surface toolbar, click the Kriging gridding from table in

current document button ,Iflil.

The Select Table or Feature Class dialog box opens.

Figure 1.30 SelectTable or Feature Class dialog box

El'1' !:.chemistrv:..~rg] mecne ucs

--_._----_ .._---_._------_._----

2. Select geochemistry and click OK.

The Krigridding of attribute using feature positions in layer dialog box opens.

Figure 1.31 Krigridding ofatlribute using feature position in layerdialog box

3. Forthe Attribute to grid, select Au.

4. Forthe Name of new grid file, enter Au_K.

5. FOfthe Grid cell size, enter 25.

6. Click Advanced.

The Krigridding - Advanced Options dialog box opens.

.-,

W\!.fV,! .geosoft.com Target fel' ArcGIS 1127

'\

'\

Module 1: f\:'1appingSurface Data

Figure 1.32 Krigridding - Advanced Options dialog box

Xmin,Ymin,Xmax,Yma.x:

:~ame'~f:.input.~ar!ogram filer

'~ame ~(~utP~~'~a~io~.~arry.file: ,.~-. ------~--~,kJ..

Strike weight:

Remove trend .(drift): .

verioorarn rnodeh

L~.g.,.:~~~r/",:tr;nL~i~:~:~;,:Power:

Range/Slope:

Nugoet:

Sill:

Strike:

The following are some of the key parameters that control the creation of the grdsurface:

K Range/Slope: For spherical, Gaussian and exponential rnodels, the range isthe distance at which the variogram madel reaches the sill value. Beyond therange, the data is uncorrelated. Forthe power model, this is the rate of clirnb, orslope for l linear model.

> Nugget: The nugget is the average error in each data point and is indicated bythe intersection of the variogram model with the h=O axis. The default is O.

> Slll: This is the level at which the varogram becomes uncorrelated, or 90esflat. The sill must be specified for the sphercal, power and Gaussian models.

> Strike and Strike weight: These parameters control anisotropic grdding.

7. For Name of output variogram file, enter Au K.

8. For Lag option, select log, save as linear.

This option will grid in log space and output the results in linear space.

9. For the Blanking Dlstance, enter 225.

10. ForVariogram model, select spherical.

11. Click Variogram Only.

The variogram is plotted and displayed in the variogram window.

!1

)

1

28 I Tarqet for f\rcGIS 1 www.oeoscrt.com

Lesson 1.3 Creating GriddedData

Figure 1.33 Variogram

X(h) ,--------------------------,VARIO.GRAM08SERVEO

SPHERICAl

hn(h):aooo~-------------------__,lDon11an'41100

"alalaanunlan~"~O~a.F-~~_r.~~-~~r.__J~_r.~~

Sample Petrs

In general, the output variogram is good at matching the overall character of thedata. Ideally, the red CUNerepresenting the variogram model should match theblack line representing the observad data.

Next, you will adjust the variogram parameters and then create the gridded data.

To adjust the variogram parameters:1. On the Target Surface toolbar, click the Kriging gridding from table in

current document button ~.

2. From the Select Table or Feature Class dialog box, select geochemistry andclick OK.

The Krigridding of attribute using feature positions in layer dialog box opens andremembers the parameters you used the first time.

3. Click Advanced.

4. For Range/Slope, enter 1300.

5. ForSiII, enterO.115.

6. Click Variogram Only.

AFile Validation window opens asking to overwrite the existing variogram.

7. ClickYes.

The variogram is updated based on the adjusted parameters.

\NV'V" .geosoft.com Tarqet for ArcGIS 129


Figure 1.34 Replottedvariogram

X(h) ,--------------------------,VARIOGRAMOBSERVED

SPHERICAL

,.,,/...n(h) 11

"-~,I04C ...... ..

IQO~O :', .':'. I

Lesson 1.3 Creating Gridded Data-------------------------------------------------------------Figure 1.35 Grid created using the kriging method

Compare the grids created using the two different gridding methods.

Now would be a good time to save your map documento

In this lesson you::> Created a grid using the minimum curvature method

:> Created a grid using the minimum curvature advanced options

" Created a grid using the kriging method

\;VV'V-J .gecsoft.com Target for ArcG!S !131

Module 1: Mapping Surface Data-------------------------------------------------

1

'\

"\

Lesson 1.4 Creating Geosoft Contours

In this lesson you wlll:

:> Create multiple contour levels and output to a shapefile

;:. Apply colours to the contours

J> Output contours to a Geosoft map layer

:l} Create exact contours

Add a legend )"\

Creating and Plotting ContoursContours are Unes drawn at specified intervals or multiples of ntervals on your mapbased on a gridded dataset. After you create a grid, you may want to generatecontours and display them on your map. The contouring tool in Target for ArcGISis specially designed to handle the very large dynamic data ranges thatcharacterise Earth Science datasets.

You can output the contours to a Geosoft map layer for display in the ArcMapwindow or make a shapefile (*.SHP) with Z attributes for use in ArcMap. You canalso select different contour options and line styles.

You will begin by creating multiple contour levels for magnetic data.

"1

"\

To create contours and output to a shapefile:

1. On the Target Surface toolbar, click the Create Contours from grid on disk

button ~.

The Create a contour plot of a grid dialog box opens.

." ." ..__ _ _._ _._ _._ _. __ _ _ __ ._ _"0 __ _ _ ."_._._

\")

'1'1"

F ig u re 1.36 Create a contour plot of a grid dialog box

'. ,-,,: ,-..~.-- ,.~,.,.-~::- -.,-.-,-,.-."-"] [;l'.:- ;[i~~k~~;~;~~ili2~ ',:.!~m~!~p;I~~~:~f::~:~~~y~:~~;,~!~=::;;-~:~::~~~~:=:~::~~:~::::~~::~~::.'.:

. (smellest tneervat level 1:Interval level 2.;,,... .;~-.;.;~-...:.:.:.:.;-.;-...:.;-...-.:....-~-..:..:--.....:-~~---.:-~.:-~~-------.:.:.:.:-.:"~.:-i.::.

Output Type:

Co~touring ecticru ,:

Interval leve! 3!

"\"\

Inter vel level 41

1"\

2. Forthe Input grid fije, click the Browse button 0.

3. From the Geophysics folder, select mag_MC.grd and click Open.

4. In the Output Type list, ensure shape file is selected,

321 Target tor ArcGIS I www.qeosott.corn

1"\


5. In the Contouring option list, ensure multiples of levels is selected.

This option plots the levels and their multiples.

6. Forlntervallevel1, enter 100.

You will create contours in 100 nT (nanotesla) intervals.

7. Click Next.

The Contour: Create a shape file as output dialog box opens.

F;g u re 1.37 Contour: Create a shape fHeas output dialog box

8. ForOutput shape le, entermag_100nTand click OK.

The contour shapefile with Z attributes is saved in your working directory anddisplayed in the data frame.

Figure 1.38 Contours tor mag_MC.grd

f-/

9. Using the Zoom In tool on the Tools toolbar, zoom in to the contour layer.

VJVJ\N.geoSOTI,corl1 Tarqet for ArcGIS 1133


1'\

~--'" // -~-_/. / ... --_.~,/( ( (_.-._._./\ \ ,\\'-, /

In the Table Of Contents, there are two shapefiles; one representing the contourlines (mag_100nT Jnz) and a polygon layer (mag_1 OOnT_ pgz) representing lows inthe data. Highs are marked with a star and lows are marked with a triangle. Noticewith the contour line layer that the lines are suppressed in areas where the valuesget really close together.

You will now regenerate the contours and examine additional parameters thatcontrol the characteristics of the output.

To regenerate the contours:


button ~.

The Create a contour plot of a grid dialog box opens and remembers theparameters you just used.

2. Click Options.

The Contour options dialog box opens.

Figure 1.40 Contour options dialog box

'succressicn option: .

supcressicn density (mm);

hiqh-low annotation:

highlow exclusion zone (cells): 5

label di;play:

label strle:

, label size (mm) :

laba! # of decimals(

3. For smoothing option, select smooth and refine.

)

"'1

'1

)

')

")

1--.)

"'1

'1

34 I Target for ArcGIS I www.qeosoft.com


vVVv...l.geosoft.com

4. For suppression density (mm), enter O.

A value of zero means the lines will not be suppressed; they will be drawnregardless of how close together they are.

5. For high-Iow 'annotatlon, select none.

6. ClickOK.

7. Click Next,

8. For the Output shape file, enter mag_100nT _2 and click OK.

The contour shapefile is created, saved in yourworking directory and displayedin the data frame.

Figure 1.41 Contourswithoutsuppression (zoomed)

9. In the Table Of Contents, right-click and remove the original mag_100nT _Inzand mag_100nT_ pgz layers.

Now you will set the properties of the layer and symbolise the contours usinggraduated colours.

To apply colours to the contours:1. In the Table Of Contents, right-click the mag_100nT _2_lnz layer and select

Properties.

The Layer Properties dialog box opens.

4,j:i' You can also open the Layer Properties dia/og box by double-clicking thelayer in fhe Table Of Contents.


Tarqet fe, ArcG!S 1135

Fig ure 1.42 Layer Properties Symbology tab

: ~atures: LS"g1e .ymbol

;!~:U!Olart$, ii Mlitiple JIItributO$

Io;;;;;;n feeneee using lhe eeee symboL

, Syn;bol' ,..,._.-,-~

bl~j)):f~ L:'~9X~!ic~!',,1

.-11

tecend

label appea:infi ne:.:t te the symbol.il table of contents:

~ Additioncl descripoo., app~aring next to the syrr:bol in your mep's legend

3, In the Show area on the left, click Quantities.

ArcMap automatically selects Graduated colors,

4, From the Value list, select ZValue.

The ZValue is the value from the grid that the contours were made frorn.

5. cnekox.

I:J,)

,r-

The contours are now coloured based on increasing mag values.

Figure 1.43 Contours coloured by mag values (zoomed)

e) ('~\ \\ \ " '

\

36 I Tarqet tor ArcGiS I V.f\N",N .gcoseft.con1

----------- _____ . Lesson 1.4 Creating Geosoft C?.ntours

Shapefiles and Geosoft Map l.ayersThe Target for ArcGIS plotting tools provide two types of output; shapefiles as yousawabove, and Geosoft map layers. The shapefile output includes databas e (DBF)files populated with attribute information related to the plotted feature. Geosoft maplayers are static images ready for printing; they contain Geosoft's pre-definedannotations and legends, and allow you to pre-define colours, pattems and linestyles.

The Geosoft Map Layer is not a typical GIS layer. The ArcMap 'Identify' cursor,symbology and labelling tools are not available. You cannot modify a Geosoft MapLayer; if changes are required, you must create a new Geosoft Map Layer.

To output contours to a Geosoft map layer:


button ~.


2. From the Output Type list, select Geosoft map layer.

3. For Intervallevel 2, enter 200.

This will create a second intervallevel.

4. Click Line Styles.

The Line colour and weight dialog box opens.

Figure 1.44 Une colour and weight dialog box

. . . 'Une weiQh_~-coi~~r'e,\ie'1: Ir-Jh-kt-':-J~tc-~k'-;!;}i!'-'~~~-:t~;~-:m.:....\;~;~-~:i~'-.;~;:~-l'.:J~-;:-;.io',

. level z [i,~.~i~rg;p.laE~;"~~Jleve!3: 1*-')GIso"~I~~,,,~~R,t,R:'r,i,"':.1:::J_'lovol4: t\l)j!,_~,:,tt~Pk,'",,:;:;',"0;""'\':M;';''1';-'leve! 5: _ r!;t~~v,;;,~I.~,


Figure 1.45 Contour: Create a Geosoft map layer asoutputdialog box

8. For Output map file, enter mag_contours and click OK.

The Geosoft contour layer is displayed.

"\

"")

Figure 1.46 Geosoft contour layer

The output map layer has contours every 100 nT. In addition, the level2 contoursspecified at an lnterval of 200 nT have labels and are displayed with a thicker blueline style.

fJ Cfick Une Sty/es in the Croate a cantaur plot of a grid diafog box to specifythe coiour, weight and style of the lines and which fevefs have labe/s.

Using the minimum curvature Au grid, you might want to determine the boundary ofan anomalous zone. You can create a contour at an exact level to define thatboundary on your map.

To create exact value contours:1. On the Target Surface toolbar, click the Create Contours from grid on disk

button rull.


2. From the Output Type list, select shape file.

3. From the Contouring option list, select exact levels.

This option plots only the exact stated contours.

4. For Intervallevel 1, enter 150 and clear the value of 200 from lnterval level z.

This will create a contour at exactly the 150nT level.11

38 I Tarqet or .A.rcGIS I \V"..tJ\lJ .qeoso.com----- ,-r--,

I


5. Click Next.

The Contour: Create a shape file as output dialog box opens.

6. ForOutput shape tile, enter mag_150nT and click OK.

The shapefile representing a value of exactly1 50 nT is saved in yourworking directory and displayed in the map display area. You may want to tumoff the display of your other contour layers and tum on the display of the mag_MC grid layer.

Figure 1.47 Contoursat 150 nT

Data View versus Layout ViewArcMap provides two ways to view your data:

l'> Data View: Use this view for exploring, editing, displaying and querying yourdata.

~ Layout View: Use this view for designing your map and adding map elementssuch as a title, north arrow and scale bar.

To switch between Data View and Layout View:

'" From the View menu, select Layout View.

The entire map is displayed and the Layout toolbar is activated.

\? You can a/so switch between views by c/icking the Data View button 2Jand the Layout View buon s) on the lower left of the display window.

You will now add a legend and scale barforyourgeochemical data.

To add a leqend:

1. Ensure you are in Layout View.

VJ\VvJ.qeosoft.corn Target fer ArcGIS 1139


2. From the Insert menu, seleet Legend.

The Legend Wizard opens. The Legend Items listed correspond to the layers inyour map that are eurrently displayed.

Figure 1.48 Legend INzard

.\

..,'(ho~s.~M bl~~e~:w~rrtIO~~lud~ln~r leg~"L:,:::; MopLay=: :', .,. . . . le

--,Lesson 1.4 Creating Geosoft Contours

Take some time now to explore the other map elements that you can add to yourmap, such as a title, north arrow and scale bar.

Now would be a good time to save your map document.

In this lesson you:-

;} Created multiple contour levels and output to a shapefile

;, Applied colours to the contours

:>- Output contours to a Geosoft map layer

:> C reated exact contours

'" Added a legend

--'_._------,www.qecscft.ccm TargetforArcG~S 1141


')

')

"""')

1)

1')

42 I Tarqet ter Arc(3!S 1 www.qeceottcor

Module 2: Managing Drillhole Data.-...- ""',."._'".'m>,..,.>'/_''''>_~"~_. _,,.,,,.,.,,,..,,.,_"""_....,.,,,.,...,,,_,.... .. ......,.. . __ .__ , ,__

Module 2 has Five Lessons:

Lesson 2.1

Lesson 2.2~

Lesson 2.3"""

Lesson 2.4

Lesson 2.5.--.,-....

www.qeosoft.corn

Creating a Drillhole Project and Importing Data 44

Working with Geosoft Databases and Profiles 58

Using QA/QC Tools 69

Creating Composite Databases 73

Using Drillhole Data Management Tools 76

Tarqet fer !\rcGIS 1143

Module 2: Managing Drillhole Data

Lesson 2.1 Creating a Drillhole Project and1mporting Data

In this lesson you will:z, Create a drillhole project

; Import data

:iI Assign the coordinate system

,. Save the databases

Creating an MXDYou will begin by making a new .MXD file for your drilling project.

To create an MXD:1. From the File menu, select New.

2. Select Blank Map and cllck OK.

A new, untitled map is created.

3. From the File menu, click Save.

4. Locate the Target for ArcGIS Training Data folder.

This is the location where all your data created by Target will be saved.

5. Forthe FiJe name, enterTarget for ArcGIS Drilling.mxd and click Save.

The drillhole system uses a special window within ArcMap to create and viewGeosoft's unique three-dimensional databases. The Geosoft Database Window isspecifically designed to access drillhole data using organised and self-containedspreadsheet tabwindows.

')

')

To open the Geosoft Database Window:

,. On the Target Drillhole toolbar, click the Show Geosoft Database Windowbutton Mm.The Geosoft Database Window opens. Because you have not yet importeddrillhole data into the project, the window displays the "No Geosoft DatabasesLoaded"message.

You may wish to dock the Geosoft Database Window at the bottom of your ArcMapwindow and click the Show Geosoft Database Window button to tum this windowon and off when needed.

1)

1')

\'\

To prevent a window from docking while moving it, hold down the CTRLkey.

441 Tarqet tor ArcG!S I www.qeoso.corn

')

'\

l1

)

I

Lesson 2.1 Creating a Drillhole Project and Importing Data

Figure 2.1 Geosoft Dalabase Wndow docked al bottom of ArcGIS window

No Geosoft Datebescs Looded

Creating a Drillhole ProjectTarget for ArcGIS uses Geosoft's unique three-dimensional database structure.These Geosoft Databases are linked by a common project name that provides easydata management.

When you start a new drillhole project, the collar databas e is created and displayedin the project window. Separate databas es are created for each data type and arelinked by the project name. For example, in a project named "Prospect" thefollowing databas es could be created:

: Prospect_Collar.gdb (collar information)

,. Prospect jsurvey.qdb (hole dip-azimuth survey information)

~. Prospect_Geology.gdb (geology information - the "Geology" label is userspecified)

:I Prospect_Assays.gdb (assay information - the "Assays" label is user specified)

Target tor ArcGIS scans the open project for all the databas es currently loaded inthe project to see which data is available. If you close one of the project databases,it will not be visible to the system and will not be used when processing your data.While working with a Target for ArcGIS project, ifyou wish to hide a database,click the display of the Geosoft Database Window on and off instead of closing it soit can continue to be accessed by Target for ArcGIS.

www.qeosoft.corn Tarqet fcr ArcGiS 1145


To create a drilihole project:1. From the Target Project menu on the Target Drillhole toolbar, select New

Project.

The Drill Hole - New Project dialog box opens.

Figure 2.2 Drill Hole - New Projectdialog box

2. Forthe New project name, enterTarget.

The Project directory displays your current working directory.

3. Use the default values for Maximum holes and Maximum data fields perdataset.

You should specify a number that is representative of the final estimated projectsize. This ensures you have enough space available in your project while notconsuming excessive storage space. However, decreasing these values fromthe defaults will not enhance performance.

/f you have more ho/es and fie/ds to impon /ateron, you can graw thedatabase to accommodate them by using the Grow option fram the Datathen Maintenance menu.

11

4. Click OK.

The empty collar databas e with the project name Target_Collar.gdb is createdand displayed.

Figure 2.3 Collar Database

'\

")

line

1

1

1

li'r----~r-----_r------r------r------r_----_+------+_----_i~tH~----~r-----_r------r------b------~----_+------+_----~~

",ij

-0.0\,(Fid)

")

')

1461 Target for ArcGIS 1 www.qeosott.ccm


Importing DataThe Dril! Hole Import Wizard guides you through the import process andautomatically displays yourdata in a spreadsheet window. You can import data inCSV/text or XLS/database format

Each type of data (collar, survey, from-to and point) has certain required fields. Youcan include otherfields as well, as long as the required felds are present. Eachtype of data and their requred felds are outlined below.

Collar Data (Drillhole Locations)Collar data must contain unique Hole ID, Easting (X), Northng (Y), Elevation(Relative Level), and Total Depth (EOH). The X, Y, and Depth data must all be inthe same units. The following is an example of these fields in CSV or Excel format:

Figure 2.4 Example Collar Data

AXE001,10600,12400,367.7,38,-60,90,AXE003,10700,12400,367.6,60,-60,90,AXE005,1 0800,12400,367.5,60,-60,90,AXE007,1 0900,12400,368.1,60,-60,90,AXE009,11 000,12400,368.3,52,-60,90,AXE011 ,11100,12400,368.9,54,-60,90,AXE013,11200,12400,369.7,37,-60,90,AXE014,11200,12200,369.9,33,-60,90,

Survey DataSurvey data can be in one oftwo forms; a Dip-Azimuth survey oran Easting-Northing survey (less common). The required fields depend on the type of surveyyou have:

"" Dip-Azimuth survey: Hole ID, Depth, Azimuth, Dip

} Easting-Northing survey: Hole ID, Depth, Eastng, Northing, Elevation

Survey data includes depth from the collar, increasing from O depth. The X, Yanddepth data must all be in the same units. A survey file is only requred if a hole hasadually been surveyed and the dip and azimuth change at depth. If a survey is notpresent, the collar dip and azimuth will be used. An example of a Dip-Azimuthsurvey file is shown in the following table:

Table 2.1 ExampleSurveyData

AXE001,O,90,-60AXE003,O,90,-60AXE005,O,90,-60AXE007,O,90,-60AXE009,O,90,-60AXE011 ,O,90,~60

.-.., .. www.qeoso.com Tarqet tor ivcGIS 1147

AXE013,O,90,-60AXE014,O,90,-60

)

\

1

)

J-1


From-To Data

Table 2.2 Example From-To AssayOata

Also known as lnterval data, this data is acquired over specified depth intervalsdown the hole; for example, at a 1 m interval with a measurement starting at Omand extending to 139 m. From-To data must include the Hole ID, Depth From,Depth To and some data values. These data values can be assay results, lithologyresults from core logging, grain size, mineral content, etc. Note that for assayresults you can include the units in the second row and these will be imported aswell. Table 2.3 shows an example of From-To assay data and Table 2.4 shows anexample of Frorn-To lithology data.

AXE005,49040,50,54,-0.01,15AXE005,49041 ,54,58,-0.01 ,25AXE005,49042,58,60,0.04,20AXE007,49043,O,2,O.01,15AXE007,49044,2,6,-0.01,15AXE007,49045,6,1 0,-0.01 ,15 \

')

1Table 2.3 Example Frorn-To Lithology Data

AXE011 ,19,21 ,Ls,S",* ,*AXE011 ,21,25,Ls,Sp",*,*:AXE011 ,25,31 .Ls.Sp.i,",","AXE011 ,31,37,Ls,Sp",*,*,*AXE011,37,45,Ls,Sp",*,*,*AXE011,45,54,Ls,Mb",* "

'\

Point DataPoint data is data acquired in discrete measurements made at specific depths. Itmust include the Hole ID, Depth and some data values. The difference betweenPoint data and From-To data is that Point data only has one depth per sample, whileFrom-To has a depth interval. Below is an example of structural notes from the corelogger, but this could be any point source measurements (e.g., MagneticSusceptibility).

Table 2.4 Example Point Data

00003 ,35.24,FOLlATION ,356 ,20,00003,36.16,VEIN,19,25,00003,35.98,VEIN,15,65,00003,38.11,vEIN,59,40,

".......-.:c,-.._"=""-.,."..,, ..""""".,.,,..,.""~~ - ~481 Target for I\rcGIS I www.qecsott.com

www.jeosc.com

____ ~sson 2.1 Creating a Orillhole Project a~9J..~P?rti~9..Qata

DD003,38.66,VEIN,343,45,DD003,39.05,VEIN,264,60,

Now that you have created your drillhole project, you will import Collar, Survey,Structure, and two types of From-To data: geochemical assay results and loggedgeological rack codeso

Importing Collar DataWhen importing data into Target tor ArcGJS, you must start with collar data. Thesystem creates a unique collar database that you can use to view all drillholes inthe project at a glance. You can also plot an initial plan map showing all holes forreview purposes. A collar file must exist before survey or assay data can beimported, and before plans and sections can be created.

To import Collar data:1. From the Data menu on the Target Orillhole toolbar, select Import then

XLSlDatabase.

The Orill Hole -Impart XLSlDatabase dialog box opens.

Figure 2.5 Drill Hole -lmportXLS/Database dialog box

2. Forthe Fije to import, click the Browse button [J3. Change the Fije of type frorn Files (*.xls) to Fijes (*.mdb).

4. From the Drilling Data falder, select Target Drilling.mdb and click Open.

5. Click Wizard.

The Orill Hole Import Wizard opens.

Targetfcr IvcGiS 1149

rIModule 2: Managing Dri~hole Data

Fig ure 2.6 Drill Hole Import WlZard

\

\

~\

"\

6. From the Database Table list, select Collar.

The Wizard updates the list of Database Fields associated with the Collar data.The Types of Data to import is automatically detected as being Hole CollarData.

Char:md Type~') Not moctedData

. @HolelD5EastD1g(i)NorthngSevo'Jon6Hofe.Top .'. 5Tota! Depth (Ea H) f)CoOarDtpoCollar ~zimuth

Reld name r;; :."' : : : : : : :.,

-}')

)

1

"11

7. Click Next.

The Drill Hole Import Wizard - Step 2 opens. In this step, you specify the importparameters for the database file you are importing. The shaded check boxesindicate required fields.

Figure 2.7 Drill Hole ImportWizard step 2

. Datob.,e R~d,

i~~

IEaslNorthj8evatlonDopAzimuthEOHGEaPROSPECTTENEMEN1l0i~~~rTE IL~

.Read}r to impo:t data

8. Using the following table, select the appropriate Channel Type for each item inthe Database Fields list.

50 I Tarqet ter t\rcGIS 1 www.qeosoft.corn

~------------------~----------------------------------

____ . Le,sson 2.1 Creating a Drillhole Project and In:!porting Data

East Easting

North Northing

Elevation Elevation

Dip Collar Dip

Azimuth Collar Azimuth

EOH Total Depth (EOH)

GEO Data

PROSPECT

TENEMENTID

STARTDATE

Local_X

Local_Y

9. Click Finish.

The data is imported into the Target_Collar.gdb database.

.'''''-.

Figure 2.8 Imporled Collardala

DH East DH RL DH Di DH Azil11uth716475. 414.1 -60. 90.716575. 419.1 -60. 90.716075. 423.2 -60. 90.716775. 431.6 -s a. 90.716875. 439.2 -60. 90.716975. 440.5 -60. 90.717075. 439.9 -60. 90

" kJ ' '

(Fid) ,

Data from the collartable in the Target Drilling.mdb Access databas e is importedinto the Target_Collar Geosoft Database. The coordinates are now stored in theDH_East, DH_North and DH_RL channels.

In the collar database, data for each collar is stored on a separate row; otherdatabases store each drillhole as an individual table or "line". This will be discussedfurther in the next les son.

-~

www.geosoft.com Target ter ArcGIS 1151


Importing Survey DataVarious types of surveys (for example, acid, gyroscope and magnetic orientation)can be used to record hole depth (depth measured from the drillhole collar at thesurface).

Now that you have imported the collar data, you will import the survey data.

To import Survey data:

1. From the Data menu on the Target D rillhole toolbar, select 1mport thenXLSlDatabase.

The Drill Hole -Import XLS/Database dialog box opens.

2. Click Wizard.

The Drill Hole Import Wizard opens.

3. From the Database Table list, select Survey.

The Wizard updates the list of Database Fields associated with the Surveydata. The Types of Data to import is automatically detected as being Dip-Azimuth Survey data.

4. Click Next

The Drill Hole Import Wizard - Step 2 opens. In this step, you specify the importparameters for the databas e file you are importing.

5. Select the appropriate Channel Type for each item in the Database Fields list.

6. Click Finish.

The data ls imported into the Target_Survey.gdb database and is displayed asanother tab in the Geosoft Database Window.

Data from the survey table in the Target Drilling.mdb Access database is importedinto the Geosoft Database. The DH_East, DH_North and DH_RL channels havealso been added to this database; this is data from the collar databas e that is linkedto the survey databas e based on the HolelD field.

In the survey databas e (and all other databases, except the collar database), datafor each drillhole is stored as an individual table or "line" in the spreadsheet window.Each line represents a single drillhole.

"1

1..-

'')

"1

1"1')

1")

l

1

1\

Importing From-To DataNext, you will import two types of Frorn-To data: geochemical assay results andlogged geological rock codeso

Importing Geochemical Assay DataGeochemical assay data are typically acquired by obtaining core or rotary drillsamples over specific depth ranges (From-To ranges) and sending samples to anassay laboratory. Numerical results are typically retumed from the laboratory in

52 ITarqet ter !\rcGIS I www.qeosoft.corn

Lesson 2,1 Creating a Drillhole Project and Importing Data------------------------------------------------electronic format and can be imported quickly. Before import, you must make surethat your data files contain the fol!owing information - Holeld, From, To and a seriesof Assay results.

To import geochemical assay data:

1. From the Data menu on the Target Drillhole toolbar, select Import thenXLSlDatabase.

The Dril! Hole -Import XLS/Database dialog box opens.

2. Click Wizard,


3. From the Database Table list, select Assay.

The Wizard updates the list of Database Fields associated with the Assaydata. The Types of Data to impart is automatically detected as being From-ToData.

4. Click Next.

The Drill Hole Import Wizard - Step 2 opens. In this step, you specify the importparameters forthe databas e file you are importing.

5. Select the appropriate Channel Type far each item in the Database Fields list.

6. Click Next.

The Dril! Hole Import Wizard - Step3 opens. Here you will specify a name forthis data.

Figure 2.9 Dril!Hole lmport wizard - Step 3

Data Narrie

:Piease choo:e.the nene ~hat best describes \tis dota .. Thls neme 'f>iilbe appended to the neme of he drin project te grve the neme cl the "detebeee jnto wbJch the date ..;jUbe lmported, Fcr example:

Projed: O;iIDat. Nome.ROCKCODE Aesu~: On]Oata_ROCKCODE

:~tros neme iSunique in the project tbe detabese ls ereeted. f tbedetebase :dread)' edsis -!t w'Ibe ov~Titten or l'Jl(;fgedJappendedaccording te the ifriport mode seected. .. .

[;.s.say lo .. . - ~_. _ .

Pleeee use or./j;-lettere, numbers and ondersccre characters i~tha neme.

7. For the Da~ Name, use the default Assay and click Finish.

The data is imported into the Target_Assay,gdb database and is displayed asanothertab in the Geosoft Database Window, The DH_East, DH_Narth andDH_RL channels have also been added to this databas e; these fields arecalculated from the collar and survey data.

V,J\V\f-.J .ge csoft.com Tarqet ter ArcGIS I1 53


Importing Geological DataTarget for ArcGIS provides a versatile environment for importing a wide variety ofgeological data ranging from rock codes, extended text descriptions, alterationtypes, contact data such as fractures or faults, and other core log information that isimportant in your drilling project.

This type of information generally consists of text, but you can also add numericalvalues; for instance, if you want to retain numeric codes for statistical purposes oryou want to run your own advanced classification strategies in Target for ArcGIS.

To import geological data:

1. From the Data menu on the Target Drillhole toolbar, select lmport thenXLSIDatabase.

The Dril! Hole -Import XLS/Database dialog box opens.

2. Click Wizard.

The Dril! Hole Import Wizard opens.

3. From the Database Table list, select Gealogy.

The Wizard updates the list of Database Fields associated with the Geologydata. The Types of Data to import is automatically detected as being From-ToData.

4. Click Nex!.

The Dril! Hole Import Wizard - Step 2 opens. In this step, you specify the importparameters forthe databas e file you are importing.

5. Using the following table, select the appropriate Channel Type for each item inthe Database Fields list:

)

1

)

1-,')

-'1

1

From Depth From

To Depth To

Weathering Data

Rock

Foliation

6. Click Next.

)

'\

1)

"-,The Dril! Hole Import Wizard - Step 3 opens. Here you will specify a name forthis data.

7. Forthe Data Name, use the default Geoiogy and click Finish.

541 Tarqat for ;\rcGIS 1 www.geosoft.com

Lessan 2.1 Creating a Drillhole Project and Importing Data---------------------The data is imported into the Target_Geology.gdb databas e and is displayed asanothertab in the Geosoft Database Window. The DH_East, DH_North andDH_RL channels have also been added to this databas e; these fields arecalculated frorn the collar and survey data.

Structure DataStructural data is point data collected at specific depths down a drillhole.This dataoften represents planar structures (bedding, cleavage, schistosity, faults, joints andveins) or linear structures (planar structure intersections, mineral stretching, andotherforms of lineation). In general, each structure type consists of an alpha andbeta angle of measurement to determine the geological orientation of structuresdown the drillhole. The alpha angle represents the dip of the structure and the betaangle represents the dip direction of the structure.

To import structure data:1. From the Data menu on the Target Drillhole toolbar, select Import then

XLSlDatabase.

The Drill Hole -Import XLS/Database dialog box opens.

2. Click Wizard.


3. From the Database Table Iist, select Structure.

The Wizard updates the list of Database Fields associated with the structuredata. The Types af Data to impart is automatically detected as being PointData.

4. Click Next.

The Drill Hole Import Wizard - Step 2 opens. In this step, you specify the importparameters forthe databas e file you are importing.

5. Select the appropriate Channel Type for each item in the Database Fields list.

6. Click Next.

The Drill Hole Import Wizard - Step 3 opens. Here you will specify a name forthis data.

7. Forthe Data Name, use the default Structure and click Finish.

The data is imported into the Target_Structure.gdb database and is displayedas anothertab in the Geosoft Database Window. The DH_East, DH_North andDH_RL channels have also been added to this databas e; these fields arecalculated from the collar and survey data.

After importing all of your data, examine the databases and ensure all the data wasimported correctly. Note how the data is stored differently in each database; collardata is stored on a single row in the database, while in other databas es it is storedas different lines.

'---"-" ~-._----www.qecsoft.com Target for -vcG1S 1I 55


When the line headercell is selected, you can use the Page Up and PageDown keys to seral! through the fines.

Assigning the Coordinate SystemNow that you have imported your data and the coordinates from the collartablehave been added to your databas es , you will assign the coordinate system to alldatabas es at once.

Target drillhole coordinates and downhole depths must be in the same units.You can work with local coordinate systems and projected coordinatesystems, but the DH_East and DH_North coordinates cannot have ageographic (long, lat) projection.

\,To set the coordinate system information:1. From the Data menu on the Target Drillhole toolbar, select Coordinate

System.

The Coordinate System dialog box opens indicating the current coordinatesystem is unknown.

@-) Unkl'lO>'m

F ig u re 2.10 Coordinate System dialog box

Cocx.ciin~te syslem: ~. Frojected (x.).,)

Tranefcrmaficn: none :

Lengfu uoits: ,. . - ... "

l.~~k~::f"::;~:j.:~;;;;,~!-:~~~;':.~\):'.;;;1~t;,~


The coordinate system is applied to the DH_East, DH_North and DH_RL channelsin all four of the databases in your Drillhole_Mapping project. These channels arethe current X, Y and Z channels as indicated by the blue x, y and z markers in thechannel header cells.

To ensure consistency belween yourdatabases and grids, you shoulddefine the coordinate system informalion foryourdatabase before creatingmaps from it.

Saving a DatabaseIt is always a good habit to save changes you make to your databases, includingnew databas es.

To save all databases:

. From the Target Project menu on the Target Drillhole toolbar, select SaveDatabases.

To save changes to an individual database:1. In the Geosoft Database Window, select the database you want to save.

2. From the Geosoft Data menu on the Geosoft Database toolbar, select CommitGeosoft database changes.

The Save Changes dialog box opens.

Figure 2.11 Save Changesdialog box

&"7';.(Si Save a.ll changes to current datab asef

3. Click Yeso

The selected databas e is saved to yourworking directory.

To undo changes, seleel Discard Geosoft databas e c/Janges from theGeosoft Data menu. This will restore yourdatabase to its last saved state.

If you close your project withoui saving it you wil! be prompted to save anymodified documents.

In this lesson you:J. Created a drillhole project

~ Imported data

" Assigned the coordinate system

r Saved the databas es

www.qecsoft.corn Tarqet fe, ArcGIS 1157


Lesson 2.2 Working with Geosoft Databases andProfiles

In this lesson you will::l> Examine the databases

:; Hide and view channels

1 Protect channels

:; View profiles

:. Use channel math tools

l> Display multiple profiles

:t- Save changes to the databas e

Geosoft DatabasesThe Target drillhole project consists of a set of Geosoft Databases (*.GDBs). Thedatabas e is organised in lines, channels and elements and stores all data"elernents" of a particulartype in individual "channels" (columns). Database "Iines"are a collection of related "channels".

In Target for ArcGIS, the collar database contains a list of holes and collar-relateddata stored in individual rows on one page or'ne". In the otherdatabases, data isstored in lines representing different drillholes; one drillhole is visible at a time,

The figure below outlines the main characteristics of a Geosoft Database.

Figure 2.12 Geosoft Database characteristics

Cclumn (Chr\MIIline:/Group h~c,dercell I Cu,t!!)! X, y.j:tnd Z~utnn Colum7 hedf te

DH Collad DH ~ole DH East ~ DH HorthIT DH RL ~ DH Dio ~~~0.0_11 lI! 12102.11 9988.8 60.8 -601.D DD002 11697.3 9983.1 60.6 -59 ,l"

2.0 DDII03 12100.0 9904. O 60.0 -60 ,%I 3.0 DDIII14 12000.0 101l27.,1l 61l.1l -55

4.0 ReO\!1 11401.5 1111172.1 61.4 -611- ata5.0 RCIl1l2 1149B .4 11l1l411.5 611.8 -6116.0 RCIl1l3 11597.6 11l1l48.2 60.5 597.0 RCIl1l4 11696.5 10060.6 60.2 -60 ri,'8.0 RC005 11697.1 9992.4 60.5 -599.11 RC006 122110.9 9970.9 611.9 -59

~:'m!,IL",~YA8 )~"+:r;"i ',m,' "1;(';;,''',,;, ','d fY"'"W' "y ilii'! ,e, .,,~,,,,,,"" 11,m ;',y

cellFiducio

cells

Unlike traditional spreadsheets, the spreadsheet windows provide a view of yourdatabas e instead of the actual data in the database. You can customise thespreadsheet to display data to your specifications. It also lets you work with data inthe spreadsheet without actually making changes to the data until you decide tosave the database. After you save the databas e, your changes are permanent.

581 Tarqet tor ArcGIS I VJ\.v....v.geosoft.com

VJV,PN .gecSCTI.com

Lesson 2.2 Working with Geosoft Databases and Profiles

Channel Header Cells are label cells used to identify the type of data contained in aspreadsheet column. The channel headers provide a visual indication of the currentstatus of the displayed channel. A black triangle in the top left comer of the headercell indicates the channel is read-only and may not be modified.

Now that you have imported your data, you will examine the databas es and ensurethat the data was imported correctly.

To select a line in a database:

1. In the Geosoft Database Window, select TargeCAssay.gdb.

Data for drillhole AXE005 is currently displayed.

2. Click the line header cell in the top left comerofthe spreadsheet.

3. Righ-click and select List.

A lst of line numbers correspondinq to each drillhole in the current databas e isdisplayed.

4. Scroll down and select SKA332.

The spreadsheet window displays the data for drillhole SKA332.

(:',v You can elso use the Go to First, Lest, Previous and Next /ine/group in

Geosoft database buttons on the Geosoft Database too/bar

'tr When the line heedercetl is setectea, you can use the Page Up and PageDown keys io scral/ through the dril/ha/es.

@ A single esietisk (*) indicates a dummy or nul/ va/ue. A dauble asteriski") indicates the channe/ is not wide enough to display the va/ues andshou/d be resized.

When you import data, all of your data is automatically displayed. You may want tohide certain channels from display in the Geosoft Database window.

To hide a channel from view:

1. In the Target_Assay databas e, click the channel header cell of the Auchannel.

The Au channel is selected.

2. Right-click and select Hide Column.

The channel is hidden from view; however, the Target_Assay databas e stillcontains the data.

You can also hide the se/ected channe/ by pressing the Spacebar.

To view a channel in the spreadsheet:

1. Click the ehannel header eell of the empty channel,

The empty channel is selected.

2. Right-cliek and select List.

Tarqet for !",cGIS 11 59

Module 2: Managin,Q Drillhole Data

A box appears beneath the empty ehannel header cell listinq the availablechannels that currently are not being viewed in the spreadsheet window.

3. Seleet Au and click OK.

The channel is now displayed in the spreadsheet. \,If you know the name of the data chennel, you can position the cursar inan empty channel header cell, type the name af the channel and pressEnter.

After importing your data into a databas e, there may be a channel you want toprotect. When ehannels are proteeted, they eannot be edited.

To protect channels:

:li Riqht-click the Au channel header cel! and seleet Protected.

The blaek triangle appears in the channel header cell and the ehannel isprotected. You can also select Protect AII and all channels will be protectedfrom editing.

To remove channel protection:

::o Right-click the Au channel header eell and clear the check mark besideProtected.

The black triangle disappears and the channel is no longer protected. You canal so select Proteet None and all channel protections will be removed.

Channel StatisticsStatistical information about your data can be very useful for general quality controland to ensure the values are in range with what you would expect.

You will now ealculate statistics forthe Au channel.

Table 2.5 Methedsfor calculatingstatistics

Calculate statistics for selected cells Click and drag lo seleet Ihe desiredcells, right-click and seleet Statistics.

Calculate statisties for a selected lineefthe database

Click the channel header ee" twotimes, right-eliek and select Statistics.

Caleulate ehannel slatisties for all ofthe seleeted lines in the database

Click the ehannel header eel/ threetimes, right-cliek and select Statistics.

The Stat Report dialog box opens.

)"1

60 ITarqet for ArcGIS I www.qeoso.corn

L_esson 2.2 Working ~ith Geosoft Databases and Profiles

Figure 2.13 stat Report dialog box

You will now edit the properties ofthe Au channel to display more decimal places.

To edit the channel properties:1. Right-click the Au channel headercell and select Edit.

The Edit Channel dialog box opens.

Figure 2.14 Edil Channeldialog box

,..--.....

label

Data \YPe

Au

.....;--~._-_._--_._--_..-

ArraySi:ze:

d.ss

Uriits

i!'J PrctectedDisplay

FormatField ~,,1dtf1

De:dmals

2. For Decimals, enter 3 and click OK.

The Au values are now displayed with three decimal places.

Profile WindowsThe profile window shows a graphical representation of the data in your GeosoftDatabase. The profile appears dlrectly below its corresponding databas e in a profilewindow. You can display up to five profile windows and up to a total of 128 profiles.

The figure below outlines the main characteristics of the profile window.

V-J\VV' .gecsoTt.com TargetforArcGIS 1161


Figure 2.15 ProfileVVindow

Sele';edproliJe window

Dolo tonge Hl1

Profilewindow0.10/0.05

O . O~ -c r-I..'---'"

Vertical scole 1v. 19)'[ Symbol profile window

Lesson 2.2 Working with Geosoft Databases and Profiles

Creating a New ChannelYou can create new channels in your database to store the results of mathematicalexpressions or other processing operations. You should create a new channel forstoring any changes you make to the original imported data.

In this lesson, you will create a new channel to store the results of a mathematicalexpression.

To craate a new channel:1. In the Geosoft Database Window, ensure the Target_Assay.gdb database is

selected.

2. Right-click in the DH_East channel header cell and select lnsert Column.

A new empty channel appears to the left of the DH_East channel.

3. In the empty channel header cell, type Au_As and press ENTER.

The Create Channel dialog box opens.

Figure 2.17 Create Channeldialog box

[5 Prote:cted

Lebel

Arr.ay Size

ClassUnits.

Display

format

Re!cfwidth

D.e-:ima!s

1~IOl~""'";:"",:",'i,i,+"",;:,~J:10 : 2"'--'~~~~--.C ;

4. For Label, enter AulAs.

When plotting channel information, this optional Channel Label will be usedinstead ofthe Channel Name.

5. For Decimals, enter 4.

6. Click OK.

The new channel is added and is filled with dummy, or null, values indicatedwith a single asterisk.

www.qecsoft.corn Tarqet for ,.o,,cGIS11 63

Figure 2.18 Assaydatabasewith new emptychannel

SKA332 DH Fr"m DH To S.mole Au As DH Eas!_

Module 2: Managing Drillhole Data-----------------

8328. 0.0 3.0 0.02[ 11.28329. 3.0 6.0 O.OH 9.28330. 6.0 9.0 0.005 11.08331. 9.0 12.0 0.00 25.8

f 8332. 12.0 15.0 0.005 53.8'. 8333. 15.0 18.0 0.005 54.26

8334. 18.0 21.0 0.005 74.68335. 21.0 24.0 0.005 58.4

~f 8336. 24.0 27 .0 O.OH 66.2[ 8337. 27.0 30. o 0.011 41.o~- 8338. 30.0 33.0 0.005 147.o8339. 33.0 36.0 0.005 124.0" 8340. 36.0 39.0 0.005 47.2:1 8341. 39.0 42.0 0.02[ 57.4

8342. 42.0 45.0 0.02[ 90.2

111'-EaChao -Au_As

,716160716162716163716165 -716166:

716169 ..716171 :_,-716172 :::,,716174 -.

...

716175716177. 716178716180

A single asterisk (*) indicates a dummy or nutl value. A double asterisk (**)indicates ihe channel is not wide enough to display the values and should beresized.

Computing a Mathematical ExpressionNow that you have added a new empty channel, you will use the advanced statusbar feature in the spreadsheet window to apply a mathematical expression to thedata selected in your spreadsheet window. You can select a portion of a channel,an entire channel on a single line, or the same channel on alllines in your database.

In this example, the contents ofthe new channel will be the results of dividing theAu channel by the As channel.

To compute a new channel of data:

1. Click the A u_As channel headercell three times.

This entire channel is selected in the database.

2. Press the equal sign (=) on your keyboard.

This changes the status bar at the bottom of the spreadsheet window to"Formula=".

3. In the Formula= box, type AulAs and press ENTER.

The values are calculated and output lo the AuJ-,s channel.

)

'\

'\

1

11

----_._-----,.-~-=--www.qeoso.corn641 Target ter ArcG!S I

Lesson 2.2 Working ~ith Geosoft Databases and Profiles

www.gecsott.corn

F ig u re 2.19 Assay database with new calculated channel of data

.SKA332 DH Ft"D[ll DH lo Sample Au As DH East ~8328. 0.0 3.0 0.02 11.2 0.001 B 716159 :.\"18329. 3.0 6.0 0.01 9.2 0.0011 7161608330. 6.0 9.0 0.005 11.0 0.0005 716162. :.8331. 9.0 12.0 0.005 25.8 0.0002 716163'8332. 12.0 15.0 0.005 53.8 0.0001 716165:.8333. 15.0 18.0 0.005 54.2 0.0001 716166 '"',8334. 18.0 21.0 0.005 74.6 0.0001 7161688335. 21.0 24.0 0.005 58.4 0.0001 716169':8336. 24.0 27.0 0.01 66.2 0.0002 716171:...8337. 27.0 30.0 0.01 41. o 0.0002 716172 .'.8338. 30.0 33.0 0.005 147. o 0.000 716174 .:8339. 33.0 36.0 0.005 124.0 0.000 716175 :8340. 36.0 39.0 0.005 47.2 0.0001 716177,8341. 39.0 42.0 0.02 57.4 0.0003 716178 ..8342. 42.0 45.0 0.02 90.2 0.0002 716180: .


The Expression box at the top updates with an example mathematicalexpress ion.

3. In the Expression box, change the value of 5000 to 10.

In this example, all Au values greaterthan 10 will be output to the new channel.

4. In the Assign channels box, c1ick in the list beside the CO channel and enterHigh_Au.

A new channel called High_Au will be created when this expression iscomputed.

5. From the list beside the C1 channel, select Au.

The expression that will be computed [co = (Cl>lO) ? (Cl) : (DUMMY);]can be read as follows: the new High_Au channel (C) will contain values of Au(e1) that are greaterthan 10 ppm; otherwise, a dummy value will be output.

6. cck ox.

)

)

""\

)

'1

)

Figure 2.21 Assaydatabasewith new High_Au channel

'1

'\

'1

1

"1

')

'1

A new channel named High_Au containing the results of this expression isadded to your Target_Assay database.

~."SKR332 As Ru As DH ~ast" DH No~th!!, DH RL ; Mask 3lmof!illlL@.

8328. 11.2 0.0018 716159. 6531527.3 399.2 18329. 9.2 0.0011 716160.5 6531527.3 396.6 18330. 11.o 0.0005 716162. 6531527.3 394. 18331. . 25.8 0.0002 716163.5 6531527.3 391. 18332. 53.8 0.0001 716165. [ 6531527.3 388.8 18333. 54.2 0.0001 716166.5 6531527.3 386.2 18334. 74.6 0.0001 716168. 6531527.3 383.6 18335. 58.4 0.0001 716169. 6531527.3 381. 18336. 66.2 0.0002 716171. 6531527.3 378. 18337. 41.o 0.0002 716172.5 6531527.3 375.8 18338. 147.o 0.000 716174. 6531527.3 373. 18339. 124.0 0.000 716175.5 6531527.3 370. 18340. 47.2 0.0001 716177 6531527.3 368. 18341.[ 57.4 0.0003 716178. 6531527.3 365. 18342. 90.2 0.0002 716180. 6531527.3 362. 1 ~

{ G;;J "t,..__ .._-"

Chan 'High_Au

'1

'\

)Next, you will use tools in the profile window to display and compare the values inthe High_Au and Au channels to visually identify llnes that have high Au values.

To compare the Au values and the High_Au vaJues:

1. Go to line SKC242.

2. Right-click in the High_Au channel and select Show Symbol ProfiJe.

This displays the High_Au values with a default symbol style.

3. Right-click in the Au channel and select Show ProfiJe.

4. Right-click in the profile window and select Y Axis Options,

The Panel Y-Axis Scale Options dialog box opens.

'1

)

'1

)

661 Target tor ArcGIS I WNN .qeoso.com

.~________________ L_es_s_o_n_2_._2_W_o_rk_i_n.:;:.g_w_it_h~eosoft Databases and Profiles

.'"~,

"

~,

~',

5."--',

.--..,

~,

~'\

---..

~

Figure 2.22 PanelY-Axis Scale Options dialog box

!..@Scale tr;;fit:fur.~3d,i:,,~:.:: .:....;. :'; "I\~:~ed~~~~:~~~~ ~~;~~'~~' ~~d,.~~~.:::.

,-t "@ sca~eaCh:,~:~:~~~~~~~.-." ..

! e Sa~;e~xlSsc.al~tor .~"~:o~!~~:: .i(':~rrie.~yn;a:~~.~~g~;~;~!~:i~;.~~~:~~~!k:~;.

="', .,. _.. ,-: > ',:: :' -',-;,' . -. :.:._.;::;{/} - -:'-,:

In the Prefile Scaling section, select Same axis scale for al! profiles andclickOK .

Although the High_Au and Au channels have different dynamic ranges, they aredisplayed using the same axis scale.

Documents

Target for Arcgis