Pocono Formation
Script error: No such module "Infobox".Template:Template otherScript error: No such module "check for unknown parameters". The Mississippian Pocono Formation is a mapped bedrock unit in Pennsylvania, Maryland, and West Virginia, in the United States. It is also known as the Pocono Group in Maryland and West Virginia,[1] and the upper part of the Pocono Formation is sometimes called the Burgoon Formation or Burgoon Sandstone in Pennsylvania.[2][3] The Pocono is a major ridge-former In the Ridge-and-Valley Appalachians of the eastern United States[4]
The Pocono is also a lateral equivalent of the Purslane Sandstone in Maryland and West Virginia. D. Brezinski of Maryland Geological Survey recommended abandoning use of the term Pocono in Maryland in favor of "Purslane" in 1989.[5]
Description
The Pocono is a dominantly gray color with quartzitic medium to coarse-grained sandstones. The base of the Pocono Formation is marked by conglomerate.[6]
Notable exposures
- The type section of the Burgoon Sandstone is in the valley of Burgoon Run, above Kittanning Point, Blair County, Pennsylvania.
- A spectacular exposure of the Purslane Sandstone (equivalent to the Pocono) is at the I-68 road cut through Sideling Hill in Maryland.
Age
Relative age dating of the Pocono places it in the lower Mississippian period. The lower boundary is with the Spetchy Kopf Formation and Huntley Mountain Formation. In South-central Pennsylvania, the Pocono often interfingers with the Rockwell Formation.[7]
See also
References
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- ↑ Script error: No such module "citation/CS1".
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- ↑ Brezinski, D.K., 1989, The Mississippian System in Maryland: Maryland Geological Survey Report of Investigations, no. 52, 75 p.
- ↑ Script error: No such module "citation/CS1".
- ↑ Berg, T.M., Edmunds, W.E., Geyer, A.R. and others, compilers, (1980). Geologic Map of Pennsylvania: Pennsylvania Geologic Survey, Map 1, scale 1:250,000.
External links
- Pages with script errors
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- Geologic formations of Pennsylvania
- Geologic formations of West Virginia
- Geologic formations of Maryland
- Carboniferous System of North America
- Conglomerate formations of the United States
- Sandstone formations of the United States
- Mississippian United States
- Carboniferous geology of Pennsylvania
- Carboniferous West Virginia
- Carboniferous Maryland
- Devonian geology of Pennsylvania
- Devonian Maryland
- Devonian West Virginia
- Cliff-formers
- Devonian southern paleotemperate deposits
- Carboniferous southern paleotemperate deposits
- Carboniferous southern paleotropical deposits