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BASEMAPS
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WEATHER
Nashville Group; Bigby-Cannon Limestone and Hermitage Formation (TNObh;6)
Geologic Formation
in
TN
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Lithology
Coquina
Coquina
Shale
Other
(3,106 mi²)
Geologic Age
Ordovician (487.3 Ma – 445.3 Ma ago)
Geologic Unit Label
Obh
Nashville Group - Bigby-Cannon Limestone - Brownish-gray phosphatic calcarenite and light-gray to brownish-gray, cryptograined to medium- grained, even-bedded limestone. Thickness 50 to 125 feet; and Hermitage Formation - Thin-bedded to laminated, sandy and argillaceous limestone with shale; nodular shaly limestone; coquina; and phosphatic calcarenite. Thickness 50 to 100 feet.
—
USGS
Taxonomy
Classified As
Geologic Formation
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