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National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Dale Summit sandstone member
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Sandstone
    • Conglomerate
  • AAPG geologic province:
    • Appalachian basin
Publication:

Swartz, F.M., Rones, Morris, Donaldson, A.C., and Hea, J.P., 1955, Stratigraphy of Ordovician limestones and dolomites of Nittany Valley in area from Bellefonte to Pleasant Gap, Pennsylvania; Trip 1(F), IN Guidebook for the 21st annual field conference of Pennsylvania geologists: Field Conference of Pennsylvania Geologists, no. 21, p. 1-25.


Summary:

Pg. F6, F14, F15 (geol. map). Dale Summit sandstone member of Tea Creek dolomite. At or near base of the Tea Creek (new). Thickness 0 to 20 feet. Contains perfectly rounded white sand grains. Locally conglomerate with pebbles of limestone and some chert and quartz. Small unidentifiable fragments of trilobites and gastropods. Overlies Coffee Run dolomite (new). Age is Early Ordovician (Canadian).
Notable exposures around town of Dale Summit, Nittany Valley, [State College 7.5-min quadrangle], Centre Co., central PA.

Source: US geologic names lexicon (USGS Bull. 1350, p. 191-192); GNC index card files (USGS-Reston).


Map showing publication footprint
  • Usage in publication:
    • Dale Summit Member
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Appalachian basin

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 ([ ]).