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The Keyser is a nodular limestone overlain by thick- and thin-bedded limestone and laminated limestone at its type locality in Keyser, West Virginia . In central Pennsylvania, the basal "calico" limestone is a fossiliferous, medium-light- to medium-gray very thick bedded calcilutite containing numerous small irregular patches of clear calcite.
The Keyser Limestone Formation is a geologic formation in West Virginia. It preserves fossils dating back to the Silurian period. See also. Earth sciences portal; Paleontology portal; List of fossiliferous stratigraphic units in West Virginia; References. Various Contributors to the Paleobiology Database.
The Corriganville Limestone was first described by J. W. Head in 1972 as part of the Helderberg Group in Allegany County, Maryland, as a gray limestone with chert. C. R. Wood first mapped it as part of the Old Port Formation in Pennsylvania. The type locality is a railroad cut 0.3 mi southeast of Corriganville, Alleghany County, Maryland.
This page was last edited on 22 December 2011, at 18:04 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike License 4.0; additional terms may apply.
Named for. Tonoloway Ridge, Rock Ford, WV. Named by. E. O. Ulrich, 1911 [2] The Late Silurian Tonoloway Formation is a mapped limestone bedrock unit in Pennsylvania, Maryland, Virginia and West Virginia. The Tonoloway is roughly equivalent to the Salina group that is found to the north and west.
Helderberg Escarpment. Named by. Conrad, T.A. 1839. The Helderberg Group is a geologic group that outcrops in the State New York, Pennsylvania, Maryland, New Jersey, and West Virginia. It also is present subsurface in Ohio and the Canadian Providence of Ontario It preserves fossils dating back to the Early Devonian and Late Silurian period.
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