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Carboniferous - Connoquenessing sandstone ; Sharon shale ; Olean conglomerate ; Cuyahoga formation; Berea sandstone; Knapp formation; Conewango formation; Salamanca conglomerate (1)
Carboniferous - Monongahela formation; Conemaugh formation; Saltsburg sandstone; Ebensburg sandstone; Summerhill sandstone; Wilmore sandstone; Allegheny formation; Pottsville formation; Mauch Chunk formation; Pocono formation (1)
Carboniferous - Pottsville formation; Parkwood formation; Pennington shale; Floyd shale; Bangor limestone; Fort Payne chert (1)
Devonian - Catskill formation; Chemung formation; Nunda formation; Genesee shale; Hamilton formation (1)
Devonian - Chattanooga shale; Frog Mountain sandstone (1)
Devonian - Knapp formation; Conewango formation; Salamanca conglomerate; Chemung formation (1)
Geology -- Alabama -- Maps (1)
Geology -- New York (State) -- Maps (1)
Geology -- Pennsylvania -- Armstrong County -- Maps (1)
Geology -- Pennsylvania -- Bedford County -- Maps (1)
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