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| Carboniferous - Monongahela formation; Conemaugh formation; Saltsburg sandstone; Ebensburg sandstone; Summerhill sandstone; Wilmore sandstone; Allegheny formation; Pottsville formation; Mauch Chunk formation; Pocono formation (1) |
| Devonian - Catskill formation; Chemung formation; Nunda formation; Genesee shale; Hamilton formation (1) |
| Geology -- United States --Maps (1) |
| Geology--Pennsylvania--Maps (1) |
| Neogene - unnamed strata (1) |