Geology professor Shawn Willsey stops along US 93 near the Idaho-Nevada border to explore fist-sized geodes, both weathered out of the rock and still embedded in the rhyolite/vitrophyre that they formed in. Learn more about how these fun geologic features form.
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Негізгі бет GEODES! What they are, how they form, and more with geology professor, Shawn Willsey
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