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National Geologic Map Database
Geologic Unit: Selinsgrove
Map showing publication footprint
  • Usage in publication:
    • Selinsgrove lower limestone
  • Modifications:
    • Named
  • Dominant lithology:
    • Limestone
  • AAPG geologic province:
    • Appalachian basin
Publication:

White, I.C., 1883, The geology of the Susquehanna River region in the six Counties of Wyoming, Lackawanna, Luzerne, Columbia, Montour, and Northumberland, [Pennsylvania]: Pennsylvania Geological Survey Report of Progress, 2nd series, v. G7, 464 p.


Summary:

Name Selinsgrove lower limestone introduced in this report for hard light-gray rock, somewhat impure, in layers 1 to 3 in. thick, interstratified with thin gray shales near Selinsgrove Junction. Thickness 65 ft below Selinsgrove, Snyder Co.; 100 ft near southern line of Northumberland Co. Rests on Selinsgrove shale, and is overlain by Marcellus slate. Age is Middle Devonian. [Name Selinsgrove is used for five units.]

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


Map showing publication footprint
  • Usage in publication:
    • Selinsgrove limestone
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Appalachian basin
Publication:

Willard, Bradford, Swartz, F.M., and Cleaves, A.B., 1939, The Devonian of Pennsylvania: Pennsylvania Geological Survey General Geology Report, 4th series, no. 19-G, 481 p.


Summary:

White (1883) applied Selinsgrove to five members of Middle Devonian age. It is here proposed to drop the name for all but his Selinsgrove lower limestone with adjective lower omitted. Thickness varies: 65 ft at Selinsgrove Junction; 7 ft in Lebanon Co.; 20 ft in Carbon Co; farther east, appears to merge with Buttermilk Falls limestone. Overlies Needmore shale (new) with gradational contact; underlies Marcellus black shales. Needmore shale was Selinsgrove shale of White (1883).

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


Map showing publication footprint
  • Usage in publication:
    • Selinsgrove Limestone Member
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Appalachian basin
Publication:

Brett, C.E., and Ver Straeten, C.A., 1994, Stratigraphy and facies relationships of the Eifelian Onondaga Limestone (Middle Devonian) in western and central New York State, IN Brett, C.E., and Scatterday, James, eds., Field trip guidebook: New York State Geological Association Guidebook, 66th annual meeting, Rochester, NY, no. 66, p. 221-321.


Summary:

Selinsgrove Limestone Member, upper member of Needmore Shale (central PA), is direct equivalent of Onondaga Limestone of western and central NY. Also equivalent to Buttermilk Falls Limestone of eastern PA. Underlying strata of Needmore are therefore equivalent to the older Esopus to Schoharie Formations of NY.

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 ([ ]).