U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Copper Ridge

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)


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 usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).