- Usage in publication:
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- Mines dolomite*
- Modifications:
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- Named
- Dominant lithology:
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- Dolomite
- AAPG geologic province:
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- Appalachian basin
Summary:
Named Mines dolomite. Consists of cherty, oolitic dolomite. Contains CRYPTOZOON. 250 feet thick. Overlies Gatesburg formation; underlies Larke dolomite. Formation seems to occupy the position of the Copper Ridge dolomite of Tennessee. Age is Late Cambrian and Early Ordovician (Ozarkian).
Named from old mining town of Mines, several miles southwest of Williamsburg, Blair Co., PA.
Source: Modified from GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
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- Mines dolomite member
- Modifications:
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- Revised
- Age modified
- AAPG geologic province:
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- Appalachian basin
Summary:
Rank reduced to member status in Gatesburg formation. Consists of dark dolomite, siliceous oolite, and chert, much of it CRYPTOZOON. Overlies upper sandy member of Gatesburg; underlies Larke dolomite. Age is Late Cambrian.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
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- Mines Dolomite Member*
- Modifications:
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- Areal extent
- AAPG geologic province:
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- Appalachian basin
Summary:
In cross section D-D', Gatesburg Formation in subsurface of northeastern WV includes lower sandy member, middle dolomite member, Ore Hill Limestone Member, upper sandy member, and Mines Dolomite Member. On the basis of lithologic similarity, Gatesburg and its lower sandy member, Ore Hill Limestone Member, upper sandy member, and Mines Dolomite Member are extended into the subsurface of adjoining northern VA.
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 ([ ]).