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Location: State Highway 178, ~ 4 miles east of Shoshone. Different colored (yellowish) strata are displayed but all of it is just tuff. Lake basin sediments top different flavors of tuff. The biggest crack in the wall is a nice example of a normal fault. |
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Dense, west-dipping vitrophyre (black band) drags students’ attention. This dark, well-exposed glassy unit can be also found on other locations for miles away. Vitrophyre is another name for a phenocryst-bearing obsidian. By Ivan Rabak |
