Sharon Conglomerate

Sharon Conglomerate
Sharon Conglomerate
Stratigraphic range: Pennsylvanian
	Outcrop of the Sharon Conglomerate at the Ledges, Cuyahoga Valley National Park
Type	Sedimentary
Unit of	Pottsville Formation
Overlies	Meadville Shale
Lithology
Primary	conglomerate
Location
Region	Pennsylvania
Country	United States
Extent	Pennsylvania, Ohio, Maryland
Type section
Named for	Sharon, Pennsylvania

The Sharon Conglomerate is a geologic formation of early Pennsylvanian age in Pennsylvania, Ohio, and Maryland, in the United States. It is dominantly conglomerate and quartzarenite sandstone. In places it is abundantly crossbedded.

The Sharon Conglomerate is generally considered a Member of the Pottsville Formation in Pennsylvania and Maryland,^[1] but it is a Formation in Ohio.

Exposures

The Sharon conglomerate has no formal type section,^[2] although it is named after the town of Sharon, Pennsylvania.

One excellent exposure is located in Cuyahoga Valley National Park at "the Ledges," located southeast of the town of Peninsula, Ohio. Another exposure is at Mary Campbell Cave near Cuyahoga Falls.

Outcrop near Jackson, Ohio showing the Sharon unconformably overlying the Borden Formation
Mudshale clasts in one of the roadcuts near Jackson. Rock hammer for scale.
Exposure at Mary Campbell Cave

^ Lyons, P.C., Jacobsen, E.F., and Scott, B.K., 1985. Coal geology of the Castleman coal field, Garrett County, Maryland, U.S. Geological Survey, Coal Investigations Map C-98. Scale: 1:24,000. link.
^ Sharon, National Geologic Map Database, Geologic Unit: Sharon
^ Cushing, H.P.; Leverett, Frank; Van Horn, Frank (1931). Geology and Mineral Resources of the Cleveland District, Ohio, USGS Bulletin 818. Washington: US Government Printing Office.