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National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Cedar Lake Quartzite Member
  • Modifications:
    • Named
  • Dominant lithology:
    • 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 Cedar Lake Quartzite Member of the Mud Creek Formation of the New Georgia Group is here named in the Villa Rica antiform on the northwest flank of the Austell-Froloma antiform in west-central GA. It consists of quartzite interlayered with amphibolite as well as layers and disseminated grains of magnetite and specular hematite, representing a metamorphosed banded iron formation. Thickness varies from 1 to 4 m. Interfingers with the Villa Rica Gneiss Member of the Mud Creek. Grades into stratigraphically overlying 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:
    • Cedar Lake Member*
  • Modifications:
    • Revised
    • Areal extent
    • Age modified
  • 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 Cedar Lake Quartzite Member of the Mud Creek Formation of Abrams and McConnell (1981) is here revised to the Cedar Lake Member of the Ropes Creek Metabasalt in the Ropes Creek thrust sheet in GA and AL. It includes the originally described quartzite with magnetite and hematite layers grading into manganiferous quartzite, as well as a continuous unit of manganiferous schist containing the quartzose rocks. Age is mostly Cambrian.

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 ([ ]).