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Allegany County

Click on a tile to display information about the associated rock types or formations.
Dunkard Group (Permian) Monongahela Formation (Pennsylvanian) Conemaugh Formation (Pennsylvanian) Allegheny & Pottsville Formations (Pennsylvannian) Mauch Chunk Formation (Mississippian) Greenbrier Formation (Mississippian) Pocono Group (Mississippian) Hampshire Formation (Devonian) Chemung Formation, Parkhead Sandtone, Ballier Formation & Harrell Shale (Devonian) Hamilton Group, Tioga Metabentonite Bed & Needmore Shale (Devonian) Oriskany Group (Devonian) Helderburg Formation & Keyser Limestone (Devonian) Tonoloway Formation (Silurian)
Wills Creek & Bloomsburg Formations (Silurian) McKenzie Formation (Silurian) Clinton Group (Silurian) Tuscarora Sandstone (Sulurian) Juniata Formation (Ordovician) Martinsburg Formation (Ordovician) Chambersburg Limestone (Ordovician) Pinesburg Station Dolomite (Ordovician) Rockdale Run Formation (Ordovician) Stonehenge Limestone (Ordovician) Conocheague Limestone (Cambrian) Elbrook Limestone (Cambrian) Waynesboro Formation (Cambrian)
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Geologic Map of Allegany County Western Allehany County -- Click for a closer view Central Allehany County -- Click for a closer view Eastern Allehany County -- Click for a closer view