Example 2
Example 2

This example shows placer districts as solid polygons classified according to DEPOSIT TYPE (eg. Au, Sn-W, etc.).  The background geology is classified according to ERA with only those units containing Precambrian age rocks showing.

The following files were used to draw this view:
  \circum\shp\geol5m\rox5mer.asx
  \circum\shp\base\w_mask.asx
  \circum\shp\base\hydro.asx
  \circum\shp\depos\placerty.asx

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To reproduce this view, click the 'SurView' button to launch SurView to view these files. Then modify the display attributes to show only Precambrian age rocks in the background as follows:

1. locate the 'Rox5mer.asx' Geology (Era) legend by re-arranging (dragging) the legend windows

2. right click on the 'Rox5mer.asx' Geology (Era) legend to display the legend configuration dialog box

3. click on the 'Subset...' button to bring up a dialog box containing a selection menu

4. select all units containing rocks of Precambrian age (eg. Late Proterozoic to Mesozoic, Late Proterozoic and Paleozoic, etc.)

5. click the 'Ok' button to close the 'Subset' dialog box

6. click the 'Ok' button to close the legend configuration dialog box and redraw the picture

NOTE: You will not be able to save the changes you make during this SurView session (since the files are write-protected on the CD-ROM).