Arizona Geophysics 3D - Depth to Bedrock Index Map 

Click on the map to bring up the QuickTime VR movie for that square.  Source map from Oppenheimer and Sumner (1980).
Caution:  each movie is 1 to 3 MB and could take 10 or more minutes to download on slow internet connections.

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Copyright 2002 by Stephen J Reynolds, Josh A Coyan, and Julia K Johnson.  These images can be freely used for educational, noncommercial purposes as long as the source is cited.