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goldbirds: Stop 1 on the Missouri River
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goldbirds: Chamberlain
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goldbirds: driving toward the Missouri again
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goldbirds: setting up camp at Bear Butte
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goldbirds: morning comes to camp
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goldbirds: Bear Butte
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goldbirds: tent city
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goldbirds: Pahasapa limestone from first stop
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goldbirds: some float - calcite weathered purple
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goldbirds: close up of anticline
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goldbirds: part of an exposed anticline
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goldbirds: catastrophic event - bedforms folded in - Englewood Fm?
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goldbirds: mudcracks, I love you
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goldbirds: nice hand sample
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goldbirds: vuggy porosity
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goldbirds: more beautiful mudcracks, like skin
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goldbirds: Adam climbing the outcrops
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goldbirds: digging in the green sand
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goldbirds: glauconitic sand at the end of the outcrop (Ordovician)
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goldbirds: probably contact of the Deadwood Fm / Winnipeg Fm
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goldbirds: this is all a history of a nutrient rich ancient ocean
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goldbirds: Cambrian sandstones and fissile shales
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goldbirds: a sense of where you are
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goldbirds: pahasapa with vugs
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goldbirds: Homestake Mine
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goldbirds: Homestake Mine
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goldbirds: 1.7 Ga phyllite overlain by Deadwood Fm sandstone
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goldbirds: ANGULAR UNCONFORMITY
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goldbirds: Ruthie and Jordan
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goldbirds: yay we're driving!