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| Carboniferous - Dunkard formation; Monongahela formation; Conemaugh formation; Saltsburg sandstone; Allegheny formation; Pottsville sandstone; Mauch Chunk formation; Greenbrier limestone; Pocono sandstone (1) |
| Geology -- United States --Maps (1) |
| Geology--Pennsylvania--Indiana County--Maps (1) |
| Geology--Pennsylvania--Westmoreland County--Maps (1) |
| Neogene - Carmichaels clay (1) |