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

Geologic Unit: Cochran

Usage:

Cochran Formation of Chilhowee Group (AL*,GA*,NC*,TN*)


Geologic age:

Late Proterozoic to Early Cambrian (Vendian to Placentian)*


Type section, locality, area and/or origin of name:

Type locality: Cochran Creek, on south side of Chilhowee Mountain, [Tallassee 7.5-min quadrangle], Blount Co., eastern TN; makes crest of mountain northwest of lower course of creek (Keith, 1895; Rodgers, 1953).


AAPG geologic province:

Appalachian basin*
Piedmont-Blue Ridge province*


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 ([ ]).