Geologic Unit: Williamsport

Usage:

Williamsport Formation (WV*)
Williamsport Member of Wills Creek Formation (PA)
/Williamsport Sandstone of [†]Cayuga Group (WV*,PA*,VA*,MD*)

[†Cayuga, at its type locality, has been abandoned as a lithostratigraphic term, and has been used as a chronostratigraphic term (Cayugan) for some time. To prevent confusion, the use of Cayuga as a lithostratigraphic term should be avoided.]

Subunits:

Cedar Cliff Limestone Member (MD*,PA*,WV*,VA*)

Geologic age:

late Silurian*

Type section, locality, area and/or origin of name:

Exposure on a short branch of Patterson Creek, 0.6 mi east of Williamsport, Grant Co., east-central WV, where private road turns northeast from main Williamsport-Moorefield Highway (Reger, 1924).

AAPG geologic province:

Appalachian basin*