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National Geologic Map Database
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  • Usage in publication:
    • Combs Canyon Dolomite Member*
  • Modifications:
    • Named
  • Dominant lithology:
    • Dolomite
  • AAPG geologic province:
    • Great Basin province
Publication:

Ross, R.J., Jr., Nolan, T.B., and Harris, A.G., 1980, The Upper Ordovician and Silurian Hanson Creek Formation of Central Nevada, IN Shorter contributions to stratigraphy and structural geology, 1979: U.S. Geological Survey Professional Paper, 1126-C, p. C1-C22. [Available online from the USGS PubsWarehouse: http://pubs.er.usgs.gov/pubs/pp/pp1126AJ]


Summary:

Combs Canyon Dolomite Member of Hanson Creek Formation named. Is a dark fossiliferous dolomite with intraclastic conglomeratic beds and horizons containing black chert. Its Silurian age determination is based on brachiopods and corals. Is known in Combs Canyon and Wood Cone Peak areas and Mountain Boy Range, Bellevue Peak quad. Overlies the middle limestone and dolomite member of Hanson Creek Formation and conformably underlies Lone Mountain Dolomite. Age is Silurian.

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


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 ([ ]).