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Geology -- Idaho.

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View Resource Revision of Middle Proterozic Yellowjacket Formation, Central Idaho, and Revision of Cretaceous Slim Sam Formation, Elkhorn Mountains Area, Montana

This paper deals with the Proterozoic Yellowjacket Formation in the Lemhi Range, Idaho. The stratigraphy, sedimentology, and structural history are described.

https://pubs.usgs.gov/pp/p1601/p1601.pdf
View Resource Digital Geology of Idaho

If you have ever wanted to learn about the geology of Idaho, this site is a great way to explore everything from Coeur d'Alene to the Sawtooth Mountains. This digital version of a course offered at Idaho State University systematically divides Idaho geology into a set of different teaching modules. The modules cover topics like the Idaho Batholith, the Columbia River Basalts, and the Lake...

http://geology.isu.edu/Digital_Geology_Idaho/