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National Geologic Map Database
Geologic Unit: Mud Creek
Map showing publication footprint
  • Usage in publication:
    • Mud Creek Formation
  • Modifications:
    • Named
  • Dominant lithology:
    • Amphibolite
    • Gneiss
    • Schist
    • Quartzite
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Abrams, C.E., and McConnell, K.I., 1981, Stratigraphy of the area around the Austell-Frolona antiform, west-central Georgia, 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. 55-67.


Summary:

The Mud Creek Formation of the New Georgia Group is here named in the Villa Rica antiform on the northwest limb of the Austell-Frolona antiform in west-central GA. It consists of amphibolite, hornblende gneiss, biotite gneiss, mica schist, and quartzite, and is divided into the Cedar Lake Quartzite Member and the Villa Rica Gneiss Member. Stratigraphically underlies and grades into the Andy Mountain and Bill Arp Formations of the informal Roosterville group. Age is Proterozoic (?).

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


Map showing publication footprint
  • Usage in publication:
    • Mud Creek 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 Mud Creek Formation of Abrams and McConnell (1981) of the New Georgia Group is here abandoned because recent mapping has shown that rocks designated by Abrams and McConnell as the type locality lie along the contact of the Zebulon Formation and the Villa Rica Gneiss and Ropes Creek Metabasalt. The Cedar Lake Quartzite Member is revised as the Cedar Lake Member of the Ropes Creek Metabasalt and the Villa Rica Gneiss Member is revised as the Villa Rica Gneiss of Pate (1980).

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 ([ ]).