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Tcao-1. Monolithologic granitic breccia in Oligocene Big Bosom Buttes caldera (Tcao). Caldera deposits overlie extensional sandstone beds (Tes). View southwest across Silesia Creek. Dashed lines are approximate contacts between geologic units. View image with annotation |
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Other photos that show unit Tcao:
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Photo Indices: Captions (Additional photos home) | Map | Young rocks and deposits | Older rocks west | Older rocks east