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National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Snellville Formation*
  • Modifications:
    • Named
  • Dominant lithology:
    • Schist
    • Quartzite
  • 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:

The Snellville Formation, here named in the Newnan-Tucker synform near Atlanta, GA, contains the lower Norris Lake Schist Member and the upper Lanier Mountain Quartzite Member. It discordantly overlies the Lithonia Gneiss and the Wolf Creek, Clairmont, and Wahoo Creek Formations of the Atlanta Group and is probably younger than the Atlanta Group. The lower contact is either a folded thrust contact or a folded angular unconformity. It is intruded by the 325 Ma Stone Mountain and Panola Granites. Zircons from the Lanier Mountain Quartzite Member have an age of 1,100 Ma. Age is Late Proterozoic and (or) early Paleozoic.

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


Map showing publication footprint
  • Usage in publication:
    • Snellville Formation†
  • Modifications:
    • Abandoned
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Higgins, M.W., Atkins, R.L., Crawford, T.J., Crawford, R.F., III, Brooks, Rebekah, and Cook, R.B., Jr., 1988, The structure, stratigraphy, tectonostratigraphy, and evolution of the southernmost part of the Appalachian Orogen, Georgia and Alabama: U.S. Geological Survey Professional Paper, 1475, 173 p., (incl. geologic map, scale 1:500,000)


Summary:

The Snellville Formation and its Lanier Mountain Quartzite Member and Norris Lake Schist Member, all of Higgins and Atkins (1981), are here abandoned. The Snellville is shown to be part of the Chattahoochee Palisades Quartzite, the Factory Shoals Formation [now also abandoned (Crawford and others, in press)], and Powers Ferry Formation of the Sandy Springs Group.

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


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 ([ ]).