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Geologic Unit: Coleman River
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Map showing publication footprint
  • Usage in publication:
    • Coleman River Formation
  • Modifications:
    • Named
  • Dominant lithology:
    • Gneiss
    • Schist
    • Sandstone
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication: Summary:

Named for Coleman River, Dillard quad, Rabun Co., north-central GA. Consists of metasandstone, meta-arkose, and quartz-feldspar gneiss with interlayers of pelitic schist. Metasandstone is medium grained, foliated, thinly laminated or "pinstriped." Overlies Persimmon Creek Formation; underlies Ridgepole Mountain Formation. [Age is late Precambrian(?), Late Proterozoic(?).]

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

NGMDB
Map showing publication footprint
  • Usage in publication:
    • Coleman River Formation
  • Modifications:
    • Revised
    • Age modified
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication: Summary:

Coweeta Group and its Persimmon Creek Gneiss, Coleman River Formation, and Ridgepole Mountain Formation are used informally in this report (local usage of Hatcher, 1979). Age changed from Late Proterozoic to Late Proterozoic and early Paleozoic. All formations are found in Richard Russell thrust sheet, east of Shope Fork fault.

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

NGMDB
Map showing publication footprint
  • Usage in publication:
    • Coleman River Formation*
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication: Summary:

Rocks mapped as quartzofeldspathic gneiss member of Richard Russell Formation probably correlate with Coleman River Formation of Hatcher (1979) in NC.

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

NGMDB
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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 ([ ]).

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