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National Geologic Map Database
Geologic Unit: Shoenberger
Map showing publication footprint
  • Usage in publication:
    • Shoenberger Member
  • Modifications:
    • Named
  • Dominant lithology:
    • Dolomite
  • AAPG geologic province:
    • Appalachian basin
Publication:

Spelman, A.R., 1966, Stratigraphy of Lower Ordovician Nittany Dolomite in central Pennsylvania: Pennsylvania Geological Survey General Geology Report, 4th series, no. 47, 187 p.


Summary:

Named the Shoenberger Member of the Nittany Dolomite in central PA as the middle member of the formation. Consists of medium-coarsely crystalline, mottled and laminated dolomite. Unit is distinguished from underlying Forge Union Member and overlying Etna Furnace Member by the absence of sand- and silt-size quartz grains in the Shoenberger. Thickness is 500 feet at Bellefonte. The Shoenberger is of Early 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 ([ ]).