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National Geologic Map Database

Geologic Unit: Old Rag

Usage:

Old Rag Granite (VA*-local)
Old Rag Granite of Saddleback Mountain Suite (VA-local)


Geologic age:

Middle Proterozoic*


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

Most typical and extensive exposure is Old Rag Mountain, east side of the main range, and east of Oldrag Post Office, Stony Man quadrangle, Madison Co., north-central VA (Furcron, 1934).


AAPG geologic province:

Piedmont-Blue Ridge province*


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 ([ ]).