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

Geologic Unit: Alligator Back

Usage:

Alligator Back Formation (NC*,VA*)
Alligator Back Metamorphic Suite (NC,VA)
Alligator Back Formation of Lynchburg Group (VA)


Geologic age:

Late Proterozoic and/or early Paleozoic*


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

Type locality: exposures on Bluff Mountain (Alligator Back), Lat. 36 deg. 25 min. 02 sec. N., Long. 81 deg. 11 min. 02 sec. W., Whitehead quadrangle, Alleghany Co., northwestern NC (Rankin and others, 1973).


AAPG geologic province:

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 ([ ]).