This document covers the process of digitising a geological map in ArcGIS desktop 10:
Here are the files that I use in the tutorial:
Other resources are available here:
Key parts of digitising not covered in these videos are covered on these pages:
- Preparing a topo overlay in ArcGIS desktop
Video tutorials (screencasts) – digitising a geological map in ArcGIS Desktop
The following screencasts document the process:
This document covers some of the process of digitising a hand drawn geological map using Inkscape:
Template and other resources
To use the pattern/swatches in illustrator:
- download and extract patterns (zip file)
- open you document
- load the swatches: Window -> Swatch libraries -> Other Libraries ...
- browse the file with the swatches
Note: all resources should be printed at 100% (not fit to printable area) on A4 or A3 paper. All the stereonets have been generated using output from OSXstereonet.
|a4_grid.pdf||A4 grid paper with 1mm, 1cm and 10cm subdivisions|
A3 grid paper with 1mm, 1cm and 10cm subdivisions
|Otago-Logging-Sheet-v03.pdf||Otago logging sheet (by Dave Prior)|
|EA_stereonet.pdf||Equal area stereonet with 2° and 10° subdivisions|
|EA_stereonet_labelled.pdf||Equal area stereonet with 2° and 10° subdivisions and degrees labelled across the horizontal|
|EA_stereonet_overlay.pdf||Overlay for equal area stereonets. Has labels around the perimeter. Should be printed on A4 tracing paper.|
|polar_net.pdf||Polar stereonet with 2° and 10° subdivisions|
|EA_stereonet_labelled_2x_10cm(notebook).pdf||Notebook sized stereonet x2. Should be printed on card (200gsm or more)|
|EA_stereonet_labelled_3x_10cm(notebook)_overlay.pdf||3x overlay of notebook sized stereonet. Should be printed on A4 tracing paper.|
|poles-to-plane-and-lineation-guide-tiled.pdf||A guide used to quickly plot lineation and poles to plane measurements. Should be printed on card (200gsm or more). Designed by Dave Craw.|
|ternary_diagram.pdf||A ternary diagram with 1% and 10% intervals.|
Instructions for using USGS AI Pack
This pack has been derived from:
There are a couple of different ways to use this pack:
Approach 1: Installing the swatches and using the reference.
- Open a new document in illustrator and bring up the swatches panel (Window>Swatches).
- Click on the small icon in the bottom left to choose swatches and go to Other Library.
This should put you in the folder that contains a folder of swatches (or the swatches folder itself)
- Copy and Paste the “USGS_Swatches” folder you downloaded to the Swatches folder.
- Now when you click on the small icon in the bottom left of the Swatches Panel you will see USGS_Swatches in the list.
- Open up one of the Swatch sets. If you hover over the individual Swatches you will notice a number is displayed.
- Refer to the USGS_Swatches_reference.pdf to see which unit this refers to, or simply fill an object on the screen to view it. If you are using AllUSGS swatch refer to FGDCgeostdTM11A2_PattCh_poster.pdf
Approach 2: Opening the USGS pattern pages directly in illustrator
- In the folder called “USGS_pattern_pages” are four ai files. Open any one of these in illustrator.
- Select the pattern you want to use. Copy and paste this into your document (put it on the side of the page.)
- Use the eyedropper tool to apply this pattern to a shape. I.e select the shape, select the eyedropper then select the pattern.