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Geology > Death Valley > Walk Through Time

Noonday Dolomite

sample of noonday dolomite
1,000 foot thick, 800 million years old. An erosion resistant dolomite deposited in quiet seas. The vertical tubes vented carbon dioxide from the rotting algae underneath.

Precambrian > Proterozoic eon > Neoproterozoic era > Cyrogenian period

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Fossil Notes
Scolithus ? tubes.

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