GeoBlocks 3D -- Interactive 3D Geologic Blocks 

GeoBlocks 3D contains interactive movies exploring geologic structures within blocks.  You can rotate the blocks, make them partially transparent to view their internal structure, cut through or erode them, displace faults, and more.

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Created by Stephen J. Reynolds, Debra E. Leedy, and Julia K. Johnson, Arizona State University.  Copyright, 2001. Educational uses are permitted as long as source is credited.  Commercial uses are prohibited.