- Usage in publication:
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- Rogersville
- Modifications:
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- Areal extent
- AAPG geologic province:
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- Appalachian basin
Summary:
Pg. 2. Rogersville shale. Blue calcareous shale 0 to 120 feet thick, abundantly fossilferous and remarkably persistent over large area in northeastern Tennessee. In Carter Valley east of Cloud Ford the formation becomes a dark siliceous limestone which cannot be separated from the limestones above and below. Overlies Rutledge limestone and underlies Maryville limestone. [Age is Middle Cambrian.]
[This quadrangle adjoins type locality. See Keith 1896 entry.]
Source: US geologic names lexicon (USGS Bull. 896, p. 1838).
- Usage in publication:
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- Rogersville shale*
- Modifications:
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- Original reference
- Dominant lithology:
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- Shale
- Limestone
- AAPG geologic province:
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- Appalachian basin
Summary:
[GNC remark (ca. 1936, US geologic names lexicon, USGS Bull. 896, p. 1838): The foregoing (Campbell 1894 entry) is first appearance in print of Rogersville shale. The formation, however, was named by A. Keith, whose description of it in its type area was not published until 1896 (USGS Morristown folio, no. 27). He described it as consisting chiefly of bright-green argillaceous shales with occasional beds of thin red sandy shale; in its eastern and southern areas divided by a bed of massive blue limestone; and in its northwestern outcrops contains many small beds of shaly limestone. Thickness 70 to 250 feet. Overlies Rutledge limestone and underlies Maryville limestone. Named from excellent exposures at and near Rogersville, Hawkins Co., northeastern Tennessee. Extends into southwestern Virginia and western North Carolina. Age is Middle Cambrian.]
Source: US geologic names lexicon (USGS Bull. 896, p. 1838).
- Usage in publication:
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- Rogersville shale*
- Modifications:
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- Revised
- AAPG geologic province:
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- Appalachian basin
Summary:
Revised the Rogersville shale to include the Craig limestone member.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
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- Rogersville shale
- Modifications:
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- Revised
- AAPG geologic province:
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- Appalachian basin
Summary:
Revised the Rogersville shale to be included in the Conasauga Group. Unit is the third formation in group. Overlies the Rutledge limestone and underlies the Maryville limestone. Thickness is 0 to 250 feet.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
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- Rogersville Shale*
- Modifications:
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- Areal extent
- AAPG geologic province:
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- Appalachian basin
Summary:
The Rogersville Shale of the Conasauga Group is used in the Rome thrust sheet in GA and AL. It overlies the Honaker Dolomite and underlies the Maryville Limestone. Age is Middle Cambrian.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
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- Rogersville Shale*
- Modifications:
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- Revised
- Areal extent
- AAPG geologic province:
-
- Appalachian basin
Summary:
In cross section E-E', in the subsurface of the Rome trough of central WV, Rogersville Shale of Conasauga Group consists of siltstone, shale, and micritic limestone. Correlates with shale, micritic limestone, and siltstone previously assigned to upper part of Maryville Limestone by Webb (1980), to the upper part of the Rome limestone unit of Rome Formation by Sutton (1981), and to middle part of the Maryville by Donaldson and others (1988). Extended into the subsurface of West Virginia. Intertongues westward with sandstone of Rome Formation; grades eastward into Elbrook Dolomite. Age is Middle Cambrian.
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 ([ ]).