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

Field, R.M., 1919, The Middle Ordovician of central and south central Pennsylvania: American Journal of Science, 4th series, v. 48, p. 403-428.


Summary:

Named for Salona, Clinton, Co., PA. Generally a black argillaceous limestone of the Trenton group. Approximately 240 ft thick; probably thickens to east. Overlies Rodman formation; underlies Coburn formation. Unit is fossiliferous and is assigned a Middle Ordovician age. Publication includes a stratigraphic section.

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


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

Kay, G.M., 1944, Middle Ordovician of central Pennsylvania: Journal of Geology, v. 52, no. 1, p. 97-116.


Summary:

Geographically extended to WV. Revised to Salona limestone for its prominent limestone lithology. Consists of approximately 175 ft of dark argillaceous limestone and calcareous shale. Contains eight metabentonite beds with the base of the Salona occurring 2 ft below the lowest metabentonite. Overlies Nealmont limestone; underlies Coburn limestone.

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


Map showing publication footprint
  • Usage in publication:
    • Salona limestone
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Appalachian basin
Publication:

Kay, Marshall, 1956, Ordovician limestones in the western anticlines of the Appalachians in West Virginia and Virginia northeast of the New River: Geological Society of America Bulletin, v. 67, no. 1, p. 55-106.


Summary:

Geographically extended to northwestern VA. Subdivided in WV and VA to include the Onego member, which is believed to correspond approximately to lowermost Salona of PA, though it probably extends a little lower. Underlies "Martinsburg" formation; overlies Nealmont limestone. Correlates with Eggleston and lowermost Martinsburg in southwestern VA.

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


Map showing publication footprint
  • Usage in publication:
    • Salona Formation
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Appalachian basin
Publication:

Faill, R.T., Glover, A.D., and Way, J.H., 1989, Geology and mineral resources of the Blandburg, Tipton, Altoona, and Bellwood quadrangles, Blair, Cambria, Clearfield and Centre Counties, Pennsylvania: Pennsylvania Geological Survey Topographic and Geologic Atlas, 4th series, 86, 209 p., scale 1:24,000 and 1:48,000


Summary:

Salona Formation is recognized throughout the Valley and Ridge province in central PA and in the subsurface in western PA, northwestern VA, and eastern WV. Unit is predominantly a dark-gray limestone containing thin interbeds of black calcareous shale. New Enterprise Member (lower member) consists of an interbedded sequence of dark-gray to grayish-black homogeneous calcisiltite and calcareous shale. Beds are nearly nonfossiliferous, with only rare brachiopods and trilobites. Five ash beds present in this member. Upper Roaring Spring Member is distinguished from lower member by the presence of ripples and cross-bedding in calcisiltite and calcarenite. One ash bed present in Roaring Spring. Salona gradationally overlies Rodman Formation and conformably underlies the Coburn Formation. Thickness of 55+/-5 m measured at the New Enterprise Stone and Gravel Company quarry at Roaring Spring. New Enterprise Member is 38 m, while the Roaring Spring Member is 18 m. No basis given for the Late Ordovician age assignment.

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


Map showing publication footprint
  • Usage in publication:
    • Salona Limestone*
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Appalachian basin

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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 ([ ]).