- Usage in publication:
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- Cheaha sandstone member*
- Modifications:
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- Named
- Dominant lithology:
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- Sandstone
- Phyllite
- AAPG geologic province:
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- Piedmont-Blue Ridge province
Summary:
Name Cheaha sandstone member of Talladega slate introduced in this report for sandstone that forms Cheaha Mountain, Clay Co., eastern AL. Unit is chiefly thin-bedded rather soft sandstone, with occasional layers of purplish phyllite. Basal 200 ft is coarse quartz conglomerate. Lies in the middle of Talladega slate and higher than Brewer phyllite member. Contains no fossils. Is probably Paleozoic and pre-Devonian.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
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- Cheaha quartzite member
- Modifications:
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- Revised
- AAPG geologic province:
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- Piedmont-Blue Ridge province
Summary:
Unit described in the Hillabee area where Talladega is divided into Cheaha quartzite, Erin slate, and a group of quartzites, phyllites, and slates lying below, between, and above the two members. Maximum thickness of the quartzites about 2,600 ft. Variations in thickness caused in part by folding and thrust faulting. Upper limit of Cheaha placed at point in section where phyllite becomes dominant rock type. Boundary is expressed topographically by the generally well-defined eastern base of Talladega-Rebecca Mountain.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
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- Cheaha Sandstone Member
- Modifications:
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- Revised
- AAPG geologic province:
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- Piedmont-Blue Ridge province
Summary:
Cheaha Sandstone Member assigned to Wash Creek Slate in this report.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
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- Cheaha Sandstone Member
- Modifications:
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- Areal extent
- AAPG geologic province:
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- Piedmont-Blue Ridge province
Summary:
Cheaha Sandstone Member of Talladega Slate extended to Floyd and Polk Cos., northwestern GA.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
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- Cheaha Quartzite Member*
- Modifications:
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- Revised
- Age modified
- AAPG geologic province:
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- Piedmont-Blue Ridge province
Summary:
The Cheaha Sandstone Member of the Talladega Slate is revised as the Cheaha Quartzite Member of the Lay Dam Formation in the Talladega thrust slice of the Rome thrust sheet in northern AL. Age is Early Devonian. [First usage of this nomenclature according to GNU records was by T.A. Cook (1982: Special Paper 191).]
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
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- Cheaha Quartzite Member
- Modifications:
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- Overview
- AAPG geologic province:
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- Piedmont-Blue Ridge province
Summary:
Cheaha Quartzite Member of Lay Dam Formation in the Northern Piedmont of AL is white to light-gray, coarse-grained, conglomeratic, thick-bedded quartzite. Grades into overlying Erin Slate Member and underlying Miller Mill Quartzite Member. Age expressed as Devonian(?).
Source: GNU records (USGS DDS-6; Reston GNULEX).
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 ([ ]).