Tonoloway Formation
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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.
Quick Facts Type, Underlies ...
Tonoloway Formation | |
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Stratigraphic range: Pridoli[1] | |
A Tonoloway limestone "fin" known as Blue Rock, Smoke Hole Canyon, West Virginia | |
Type | sedimentary |
Underlies | Keyser Formation |
Overlies | Wills Creek Formation |
Thickness | 250+/-20 m |
Lithology | |
Primary | limestone |
Other | shale |
Location | |
Region | Appalachian Mountains |
Extent | Pennsylvania, Maryland, Virginia, West Virginia |
Type section | |
Named for | Tonoloway Ridge, Rock Ford, WV |
Named by | E. O. Ulrich, 1911[2] |
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