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Ocoee Supergroup, Great Smokey Group; Boyd Gap Formation (NCZbg;2)

Geologic Formation in TN, NC
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Lithology
Slate
Geologic Age
Neoproterozoic (1000 Ma – 542 Ma ago)
Geologic Unit Label
Zbg
Dark gray, highly-sulfidic slate and metasiltstone interbedded and gradational with metagraywacke. Stratigraphic position uncertain. In Cherokee County includes upper part of Buck Bald Formation.
— USGS
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Geologic Formation
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