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National Geologic Map Database

Geologic Unit: Roan

Usage:

No current usage?
(†Roan Gneiss (GA,NC,SC,TN) considered abandoned? Uncertain if used by GA, NC, SC, and TN Geol. Surveys. Not used by the USGS.)


Geologic age:

Precambrian


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

Not designated. Named from development on Roan Mountain, Carter Co., northeastern TN (Keith, 1903).


AAPG geologic province:

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