Cross section of mudcracks in Proterozoic Snowslip Formation, Glacier National Park, Montana.
Originally uploaded in Cutting Edge:Courses:Sedimentary Geology:Stratigraphic Up Indicators.

Image 12027 is a 367 by 550 pixel JPEG
Uploaded: May20 08

Last Modified: 2008-05-20 11:26:35
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G. R. McGimsey, National Park Service;
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