Usage:
Copper Ridge Dolomite (WV*, and subsurface of MS*)
Copper Ridge Dolomite of Knox Group (AL*,GA*,KY*,TN*,VA*)
Copper Ridge Formation of Knox Group (VA)
Copper Ridge dolomite (informal) (OH*-subsurface)
For informal usage, the rank or lithologic term should not be capitalized.
Subunits:
Steam Corners member [informal] (OH-subsurface).
Geologic age:
Late Cambrian (Millardan to early Ibexian; Dresbachian to Trempealeauan; Steptoean to early Skullrockian)*;
locally, possibly Early(?) Ordovician*
Type section, locality, area and/or origin of name:
Type section: gorge of Forked Deer Creek through Copper Ridge, 1 mi northwest of Thorn Hill, Grainger Co., northeast TN, and 13 mi northwest of Morristown. (Butts, 1940).
Type section: along road from Bean Station to Evans Ferry, on Clinch River, now U.S. Highway 25-E (Bridge, 1956) [now submerged].
AAPG geologic province:
Appalachian basin*
Black Warrior 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 ([ ]).