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Conewango Group
Stratigraphic range: Carboniferous
~ Kasimovian- Gzhelian
~307–301  Ma
Type Group
Sub-units Casselman Formation, Glenshaw Formation
Underlies Monongahela Group
Overlies Allegheny Group
Lithology
Primary Shale and Clay
Other Coal, Limestone, Red Shale, Sandstone
Location
Region  Maryland,  Ohio,  Pennsylvania and   West Virginia
Country  United States

The Conewango Group is a Carboniferous aged geologic group in Western and south central Pennsylvania. It consists of two formations the younger Casselman Formation and the older Glenshaw Formation.

References