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Map showing publication footprint
  • Usage in publication:
    • Stone Mountain granite
  • Modifications:
    • Named
  • Dominant lithology:
    • Granite
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Watson, T.L., 1902, A preliminary report on a part of the granites and gneisses of Georgia: Georgia Geologic Survey Bulletin, no. 9-A, 367 p.


Summary:

Name applied in this report to granite quarried at Stone Mountain, DeKalb Co., northwestern GA. Described as an even-textured medium-grained light-gray biotite-bearing muscovite granite.

Source: GNU records (USGS DDS-6; Reston GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Stone Mountain granite
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Herrmann, L.A., 1954, Geology of the Stone Mountain-Lithonia district, Georgia: Georgia Geologic Survey Bulletin, no. 61, 139 p.


Summary:

Stone Mountain granite assigned a Permian(?) age. Introduced during a late stage of the Appalachian Orogeny. Intrudes Lithonia gneiss.

Source: GNU records (USGS DDS-6; Reston GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Stone Mountain Granite*
  • Modifications:
    • Age modified
    • Geochronologic dating
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Higgins, M.W., and Atkins, R.L., 1981, The stratigraphy of the Piedmont southeast of the Brevard zone in the Atlanta, Georgia, area, IN Wigley, P.B., ed., Latest thinking on the stratigraphy of selected areas in Georgia; Volume 1: Georgia Geologic Survey Information Circular, no. 54-A, p. 3-40.


Summary:

Age of Stone Mountain Granite is Carboniferous based on two concordant zircon ages (Higgins and others, unpub. data) that indicate an age of 325 m.y.; approximately same age as Panola Granite.

Source: GNU records (USGS DDS-6; Reston GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Stone Mountain Granite*
  • Modifications:
    • Overview
    • Geochronologic dating
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Crawford, T.J., Higgins, M.W., Crawford, R.F., Atkins, R.L., Medlin, J.H., and Stern, T.W., 1999, Revision of stratigraphic nomenclature in the Atlanta, Athens, and Cartersville 30' x 60' quadrangles, Georgia: Georgia Geologic Survey Bulletin, no. 130, 45 p.


Summary:

Age of Stone Mountain is changed to Carboniferous(?) based on lack of metamorphic foliation, lack of appreciable contact effects indicating that country rocks were under about the same pressure-temperature conditions as the pluton, and because zircon ages, though preliminary, indicate a Carboniferous age. In addition, an Rb-Sr whole-rock isochron age of 291 Ma (Carboniferous) was reported by Whitney and others, (1976) and an 40Ar/39Ar age for biotite and muscovite of 281 +/-5 Ma and 283 +/-5 Ma (Permian) was reported by Dallmeyer (1978); the argon ages are probably cooling ages.

Source: GNU records (USGS DDS-6; Reston GNULEX).


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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 ([ ]).

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