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Map showing publication footprint
  • Usage in publication:
    • Bear Mountain Member
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Conglomerate
    • Sandstone
    • Shale
  • AAPG geologic province:
    • Appalachian basin
Publication:

Swartz, F.M., 1965, Guide to the Horse Shoe curve section between Altoona and Gallitzin, central Pennsylvania: Pennsylvania Geological Survey Bulletin, 4th series, G-50, 58 p.


Summary:

Pg. 20, 21. Bear Mountain Member of Pocono Formation. A.D. Leonard (unpub. thesis) termed the upper and lower divisions of the Pocono at Jim Thorpe, Bear Mountain Member and Silkmill Run Member, respectively. These members likewise were found in ridges along the rim of the Northern Anthracite Field in central Pennsylvania, where they are overlain by a body of calcareous sandstone designated Abrahams Creek Member. Thickness of Bear Mountain 599 feet. Composed of cycles tending to grade upward from conglomerate into sandstone and in some instances into thin interval of shale, generally thin with some truncation by scour below base of next higher beds. "Bear Mountain" of Lehigh Gap appears to be correlative with both Beckville and Mount Carbon Members at Westwood Gap. Age is Mississippian.
Area of report is Horse Shoe curve, between Altoona and Gallitzin, [Altoona 15-min quadrangle], Blair Co., central PA.

Source: US geologic names lexicon (USGS Bull. 1350, p. 51-52).


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"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 ( ).

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