Usage:
Crab Orchard Mountains Group (TN*)
Subunits:
(alphabetical) --all in TN*: Newton Sandstone, Rockcastle Conglomerate, Sewanee Conglomerate, Vandever Formation, Whitwell Shale.
Geologic age:
Early Pennsylvanian (Bashkirian; Westphalian; Morrowan)*
Type section, locality, area and/or origin of name:
Type section (composite): along U.S. Highway 70N and the railroad tracks of the Tennessee Central Railway Company where they cut across the Crab Orchard Mountains, Cumberland Co., eastern TN (Wilson and others, 1956).
AAPG geologic province:
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 ([ ]).