No current
(†Long Savannah Formation (AL,GA,TN) replaced with Pond Springs Formation of Stones River Group. See Pond Springs.)
late Middle and/or early Late Ordovician (Whiterockian; Chazyan)
Along Mahan Gap Road, Snow Hill quadrangle, Hamilton Co., TN. Named from Long Savannah Creek just northeast of Snow Hill (Cooper, 1956).
Appalachian basin
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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 ([ ]).