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National Geologic Map Database

Geologic Unit: Hannah

Usage:

No current usage.
(†Hannah Member of †Promised Land Formation (GA) [now Lithonia Gneiss] abandoned.)


Geologic age:

Late Proterozoic to early Paleozoic


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

Exposures where powerline crosses a SW running road NW of Hannah Cemetery, near Centerville, Snellville 7.5-min quadrangle, Gwinnett Co., GA. (Higgins and Atkins, 1981).


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 ([ ]).