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Geologic Atlas of the United States
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Geologic Atlas of the United States
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Ordovician - Bighorn limestone (2)
Triassic - Chugwater formation (2)
Cambrian - Conococheague limestone; Elbrook formation; Waynesboro formation; Tomstown limestone; Antietam sandstone; Harpers schist; Montalto quartzite ; Weverton sandstone (1)
Devonian - Chemung formation; Oriskany formation (1)
Geology -- Pennsylvania -- Franklin County -- Maps (1)
Geology -- Pennsylvania -- Fulton County -- Maps (1)
Geology -- Wyoming -- Sheridan County -- Maps (1)
Ordovician - Juniata formation; Martinsburg shale; Chambersburg limestone; Stones River limestone; Beekmantown limestone (1)
Silurian - Helderberg limestone; Cayuga formation; Clinton shale; Tuscarora sandstone (1)
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