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Garrett County

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Click on a tile to display information about the associated rock types or formations.
 Geologic Map of Garrett County (1968) Click for a closer view Click for a closer view Click for a closer view Click for a closer view
Dunkard Group (Permian) Wills Creek & Bloomsburg Formations (Silurian)
Monongahela Formation (Pennsylvanian) McKenzie Formation (Silurian)
Conemaugh Formation (Pennsylvanian) Clinton Group (Silurian)
Allegheny & Pottsville Formations (Pennsylvannian) Tuscarora Sandstone (Sulurian)
Mauch Chunk Formation (Mississippian) Juniata Formation (Ordovician)
Greenbrier Formation (Mississippian) Martinsburg Formation (Ordovician)
Pocono Group (Mississippian) Chambersburg Limestone (Ordovician)
Hampshire Formation (Devonian) Pinesburg Station Dolomite (Ordovician)
Chemung Formation, Parkhead Sandtone, Ballier Formation & Harrell Shale (Devonian) Rockdale Run Formation (Ordovician)
Hamilton Group, Tioga Metabentonite Bed & Needmore Shale (Devonian) Stonehenge Limestone (Ordovician)
Oriskany Group (Devonian) Conocheague Limestone (Cambrian)
Helderburg Formation & Keyser Limestone (Devonian) Elbrook Limestone (Cambrian)
Tonoloway Formation (Silurian) Waynesboro Formation (Cambrian)