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Swakane Biotite Gneiss

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Stevens Pass - Bedrock Geology

1:10:50

Supervolcanoes in the Pacific Northwest

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B. Basement Glimpses

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Central Oregon: Crooked River Area

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Calcrete with Skye Cooley

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The Line Time Erased; Where Will It Be Drawn In The Future?

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Why Are There Volcanoes And Obsidian At California's Salton Sea?