![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/4/44/Keyser_Formation_522.jpg/640px-Keyser_Formation_522.jpg&w=640&q=50)
Keyser Formation
From Wikipedia, the free encyclopedia
The Late Silurian to Early Devonian Keyser Formation is a mapped limestone bedrock unit in Pennsylvania, Maryland, Virginia, and West Virginia.
Quick Facts Type, Unit of ...
Keyser Formation | |
---|---|
Stratigraphic range: Pridoli-Lochkovian[1] | |
![]() Outcrop of the Keyser Formation on U.S. Route 522 in Fulton County, Pennsylvania, north of Warfordsburg | |
Type | Sedimentary |
Unit of | Helderberg Group |
Sub-units | Byers Island, Jersey Shore & La Vale Members |
Underlies | New Creek Limestone and Old Port Formation |
Overlies | Tonoloway Formation |
Thickness | 33 m (108 ft) at Allegheny Furnace |
Lithology | |
Primary | Limestone |
Location | |
Coordinates | 38.3°N 79.6°W / 38.3; -79.6 |
Approximate paleocoordinates | 36.3°S 41.5°W / -36.3; -41.5 |
Region | Pennsylvania, Maryland, Virginia, West Virginia |
Country | ![]() |
Extent | Appalachian Mountains |
Type section | |
Named for | Keyser, West Virginia |
Named by | E. O. Ulrich |
Year defined | 1911[2] |
Close