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Geologic Unit: Mines
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Map showing publication footprint
  • Usage in publication:
    • Mines dolomite*
  • Modifications:
    • Named
  • Dominant lithology:
    • Dolomite
  • AAPG geologic province:
    • Appalachian basin
Publication:

Butts, Charles, 1918, Geologic section of Blair and Huntingdon Counties, central Pennsylvania: American Journal of Science, 4th series, v. 46, p. 523-537.


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).


Map showing publication footprint
  • Usage in publication:
    • Mines dolomite member
  • Modifications:
    • Revised
    • Age modified
  • AAPG geologic province:
    • Appalachian basin
Publication:

Wilson, J.L., 1952, Upper Cambrian stratigraphy in the central Appalachians: Geological Society of America Bulletin, v. 63, no. 3, p. 275-322.


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).


Map showing publication footprint
  • Usage in publication:
    • Mines Dolomite Member*
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Appalachian basin
Publication:

Ryder, R.T., 1992, Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian basin from Richland County, Ohio, to Rockingham County, Virginia: U.S. Geological Survey Miscellaneous Investigations Series Map, I-2264.


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).


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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 ([ ]).