Skillern Chert Member of Rockwood Formation (TN*)
early Silurian*
Type section: exposures along Skillern Creek and its tributaries and in Skillern Cove along TN Highway 30, about 5 km southeast of Pikesville, Bledsoe Co., south-central TN (Milici and Wedow, 1977).
Appalachian basin*
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Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).