- Usage in publication:
-
- Allatoona Complex*
- Modifications:
-
- Named
- Dominant lithology:
-
- Gneiss
- Schist
- AAPG geologic province:
-
- Appalachian basin
- Piedmont-Blue Ridge province
Summary:
Grenville basement rocks of the Bill Arp thrust sheet, which crop out east and northeast of Cartersville in the core of a complex anticlinorium along the western flank of the Murphy synclinorium in northern GA, and in a smaller area southwest of Jasper, GA, are here named the Allatoona Complex for exposures along the shore of Lake Allatoona, Bartow Co. It includes the Corbin Gneiss and the Red Top Mountain Schist. The Allatoona was called the Corbin Gneiss Complex by McConnell and Costello (1984), but that name is preempted by Corbin Gneiss. Unconformably underlies the Pinelog Formation. Age is Middle Proterozoic.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Allatoona Complex*
- Modifications:
-
- Revised
- Age modified
- AAPG geologic province:
-
- Appalachian basin
- Piedmont-Blue Ridge province
Summary:
Allatoona Complex includes Early(?) to Late(?) Proterozoic Red Top Mountain Formation (revised), Early(?) to Middle Proterozoic Crawfish Schist (new), Early(?) to Middle Proterozoic Rowland Spring Formation (new), and Middle(?) to Late Proterozoic Corbin Metagranite (revised). Report includes geologic map and correlation chart.
Source: GNU records (USGS DDS-6; Reston GNULEX).
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 ([ ]).