| This page provides an overview of the local geologic structure, stratigraphy, and history in the Beartooth Mountain Range and surrounding areas. If you have an article to contribute, please forward it to Webmaster@ybra.org. |
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Introduction
to the Precambrian |
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Flathead
Sandstone - Cambrian Beach Deposit |
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Mass
Extinctions - Trilobites |
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Palisades
Geology |
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Geology
of the Red Lodge Area - A Primer to the Fort Union Formation |
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