and Foreknobs into Pennsylvania, but did not use the term Greenland Gap Group. Boswell, et al. (1987), does not recognize the Scherr and Foreknobs Formations...
5 KB (379 words) - 19:04, 20 June 2025
The Marcellus Formation or the Marcellus Shale is a Middle Devonian age unit of sedimentary rock found in eastern North America. Named for a distinctive...
102 KB (10,686 words) - 17:52, 5 June 2025
October 2013). "Sequence stratigraphic hierarchy of the Upper Devonian Foreknobs Formation, central Appalachian Basin, USA: Evidence for transitional greenhouse...
70 KB (7,622 words) - 10:51, 19 June 2025
and Foreknobs into Pennsylvania but did not use the term Greenland Gap Group. Boswell et al. (1987), does not recognize the Scherr and Foreknobs Formations...
5 KB (462 words) - 23:35, 4 June 2025
The Devonian Catskill Formation or the Catskill Clastic Wedge is a unit of mostly terrestrial sedimentary rock found in Pennsylvania and New York. Minor...
22 KB (1,407 words) - 05:33, 27 June 2025
is also a lateral equivalent of the Foreknobs Formation and underlying Scherr Formation. The Brallier Formation usually underlies the Lock Haven. The...
6 KB (494 words) - 19:19, 20 June 2025
Tuscarora Sandstone (redirect from Tuscarora Formation)
The Silurian Tuscarora Formation — also known as Tuscarora Sandstone or Tuscarora Quartzite — is a mapped bedrock unit in Pennsylvania, Maryland, West...
14 KB (1,362 words) - 20:36, 1 July 2025
Hamilton Group (redirect from Hamilton Formation)
shale with some sandstone. There are two main formations encompassed by the group: the Mahantango Formation and the Marcellus Shale. In southwestern Virginia...
15 KB (1,281 words) - 20:03, 4 June 2025
Greenbrier Group (redirect from Greenbrier Formation)
grainstones. Numerous solution caves are developed within the Greenbrier Formation. List of types of limestone Geology of West Virginia Haught, O.L. (1968)...
3 KB (199 words) - 19:55, 1 July 2025
Trenton Limestone Group (redirect from Trenton Formation)
thin bedded deep water limestone. The formation is composed of thin interbedded wackestone and shale. This formation can be organic rich in parts and sub...
6 KB (362 words) - 02:41, 2 July 2025
The Tully Formation is a geologic unit in the Appalachian Basin. The Tully was deposited as a carbonate rich mud, in a shallow sea at the end of the Middle...
4 KB (300 words) - 20:20, 1 July 2025
The Elbrook Formation is a geologic formation in West Virginia, Maryland, and Pennsylvania. It dates back to the Cambrian period. Fossils of trilobite...
2 KB (68 words) - 19:41, 1 July 2025
Commons has media related to Fort Payne Formation. The Fort Payne Formation, or Fort Payne Chert, is a geologic formation found in the southeastern region of...
3 KB (142 words) - 18:58, 1 July 2025
The Rome Formation is a geologic formation in Alabama, Georgia, and Tennessee. It preserves fossils dating back to the Cambrian period. Earth sciences...
2 KB (68 words) - 18:52, 1 July 2025
The Silurian Bloomsburg Formation is a mapped bedrock unit in Pennsylvania, New Jersey, New York and Maryland. It is named for the town of Bloomsburg...
8 KB (703 words) - 17:41, 31 May 2025
Copper Ridge Dolomite (category Southern United States geologic formation stubs)
The Copper Ridge Dolomite is a geologic formation in Alabama. It preserves fossils dating back to the Cambrian Period. List of fossiliferous stratigraphic...
2 KB (45 words) - 19:14, 29 June 2025
The Waynesboro Formation is a limestone, dolomite, and sandstone geologic formation in Virginia, Maryland, Pennsylvania and West Virginia. In some areas...
5 KB (426 words) - 19:46, 1 July 2025
The Late Silurian to Early Devonian Keyser Formation is a mapped limestone bedrock unit in Pennsylvania, Maryland, Virginia, and West Virginia. The Keyser...
9 KB (778 words) - 01:22, 3 June 2025
Needmore Shale (redirect from Needmore Formation)
Needmore Formation or Needmore Shale is a mapped bedrock unit in Pennsylvania, Maryland, Virginia, and West Virginia. The Needmore Formation was originally...
3 KB (225 words) - 01:23, 3 June 2025
The Antietam Formation or Antietam Sandstone is a geologic formation in Pennsylvania, Maryland and West Virginia. It is largely quartz sandstone with...
3 KB (121 words) - 19:32, 1 July 2025
The Swift Run Formation is a geologic formation in Virginia and West Virginia. It dates back to the Neoproterozoic. Earth sciences portal Virginia portal...
1 KB (35 words) - 18:46, 6 March 2024
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...
5 KB (398 words) - 19:30, 20 June 2025
Ridgeley Sandstone (category Geologic formations of Maryland)
Formation Foreknobs Formation Cloyd Conglomerate Hampshire Formation Millboro Shale Pound Formation Frasnian Brallier Formation Foreknobs Formation Millboro...
7 KB (674 words) - 01:32, 25 October 2023
Sunbury Shale (category Midwestern United States geologic formation stubs)
The Sunbury Shale is a geologic formation in Michigan. It preserves fossils dating back to the Mississippian period. Earth sciences portal Michigan portal...
2 KB (38 words) - 15:38, 1 July 2025
The Rockdale Run Formation is a geologic formation in Maryland, Pennsylvania, Virginia and West Virginia. It preserves fossils dating back to the Ordovician...
3 KB (89 words) - 18:58, 2 July 2025
The Devonian Mahantango Formation is a mapped bedrock unit in Pennsylvania, West Virginia, and Maryland. It is named for the North branch of the Mahantango...
10 KB (957 words) - 22:46, 4 June 2025
The Mississippian Mauch Chunk Formation is a mapped bedrock unit in Pennsylvania, Maryland, and West Virginia. It is named for the township of Mauch Chunk...
4 KB (417 words) - 19:22, 20 June 2025
The Hampton Formation is a geologic formation in Iowa. It preserves fossils dating back to the Carboniferous period. Earth sciences portal Iowa portal...
1 KB (65 words) - 21:12, 2 June 2025
Hampshire Group (redirect from Hampshire Formation)
The Hampshire Formation is a geologic formation in West Virginia, USA. It preserves fossils dating back to the Devonian period. Earth sciences portal...
2 KB (73 words) - 20:04, 1 July 2025
The Schoharie Formation is a Devonian formation found in outcrop in New York, New Jersey, Pennsylvania, and Virginia. Also known as the "Schoharie Grit"...
3 KB (119 words) - 21:16, 2 July 2025