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National Geologic Map Database

Geologic Unit: Heard

Usage:

Heard Group (AL,GA)


Subunits:

Centralhatchee (GA,AL, Glenloch (GA,AL), Roopville (GA,AL) Formations


Geologic age:

Precambrian
Cambrian


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

Type area: Heard Co., west-central GA. (Bentley and Neathery, 1970)


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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).