U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Geologic Unit: Milesburg
Map showing publication footprint
  • Usage in publication:
    • Milesburg Member
  • Modifications:
    • Named
  • Dominant lithology:
    • Limestone
    • Metabentonite
  • AAPG geologic province:
    • Appalachian basin
Publication:

Thompson, R.R., 1963, Lithostratigraphy of the Middle Ordovician Salona and Coburn Formations in central Pennsylvania: Pennsylvania Geological Survey General Geology Report, 4th series, no. 38, 154 p.


Summary:

Named the Milesburg Member of the Coburn Formation for Milesburg, Centre Co., central PA. Consists of calcirudite, calcarenite, and calcareous shale with four metabentonite beds, all less than 1.5 inches thick. Unit is 119 feet thick. Overlies Coleville Member of Coburn Formation and underlies Roaring Springs Member of Salona Formation. The Milesburg is of Middle Ordovician age.

Source: GNU records (USGS DDS-6; Reston 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 ([ ]).