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USGS Geology in the Parks

Geologic story of the North Cascades button

North Cascades National Park:
Sandstone structures

enlagement with structures
Enlargement of sandstone sample to show structures.
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Material in this site has been adapted from a book, Geology of the North Cascades: A Mountain Mosaic by R. Tabor and R. Haugerud, of the USGS, with drawings by Anne Crowder. It is published by The Mountaineers, Seattle.

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