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Mineral Resources > Online Spatial Data > Geology > by state > Georgia Geology

Geologic units in Gordon county, Georgia

[Additional scientific data in this geographic area]

Conasauga Group; Middle unit; Shale unit (Cambrian) at surface, covers 2 % of this area

Conasauga Group; Middle unit; Shale unit: Includes limestone unit (Ccls), possible equivalent of Rutledge Limestone of Tennessee and shale unit (Cc), possible equivalent of Rogersville Shale of Tennessee

Lithology: shale; limestone

Metagraywacke/ Mica Schist (Precambrian-Paleozoic) at surface, covers 1 % of this area

Metagraywacke/ Mica Schist

Lithology: metasedimentary rock; mica schist

Devonian-Missisippian undivided (Devonian-Mississippian) at surface, covers 6 % of this area

Devonian-Missisippian undivided (DMu): Includes Fort Payne Chert, Chattanooga Shale in Dade Co.; Fort Payne Chert at top, Chattanooga Shale in middle and Armuchee Shale at bottom in all areas except Polk Co. and Dade Co.; Fort Payne Chert, and Armuchee Chert in Polk Co. CHATTANOOGA Shale (Dc)

Lithology: shale ; chert

Knox Group undifferentiated (Ordovician-Cambrian) at surface, covers 12 % of this area

Knox Group undifferentiated

Lithology: dolostone (dolomite); limestone

Red Mountain Formation (Silurian) at surface, covers 2 % of this area

Red Mountain Formation

Lithology: sandstone; shale

Mica Schist/ Metasiltstone (Precambrian-Paleozoic) at surface, covers 4 % of this area

Mica Schist/ Metasiltstone

Lithology: mica schist; metasedimentary rock

Phyllite and Quartzite (Precambrian-Paleozoic) at surface, covers 1 % of this area

Phyllite and Quartzite

Lithology: phyllite; quartzite

Conasauga Group; Lower unit; shale and sandstone unit (Cambrian) at surface, covers 18 % of this area

Conasauga Group; Lower unit; shale and sandstone unit: Includes shale and sandstone unit (Ccs) with lower dolostone unit (Ccdl). Possible equivalent of Pumpkin Valley Shale of Tennessee

Lithology: shale; sandstone

Floyd Shale (Mississippian) at surface, covers 4 % of this area

Floyd Shale (Mfs): includes the Hartselle Sandstone Member (Mh) in Floyd County and an unnamed limestone member (Ml in Floyd County) at the base

Lithology: shale

Conasauga Group; Maynardville Limestone (Cambrian) at surface, covers 5 % of this area

Conasauga Group; Maynardville Limestone

Lithology: limestone

Chickamauga Group; Upper and Middle Ordovician Rocks (Omb) includes Moccasin Limestone and Bays Formation (Ordovician) at surface, covers 0.3 % of this area

Chickamauga Group; Upper and Middle Ordovician Rocks (Omb) includes Moccasin Limestone and Bays Formation.

Lithology: limestone; sandstone

Rome Formation (Cambrian) at surface, covers 3 % of this area

Rome Formation

Lithology: sandstone; shale

Conasauga Group; Middle unit; Limestone unit (Cambrian) at surface, covers 11 % of this area

Conasauga Group; Middle unit; Limestone unit: Includes limestone unit (Ccls), possible equivalent of Rutledge Limestone of Tennessee and shale unit (Cc), possible equivalent of Rogersville Shale of Tennessee

Lithology: limestone

Conasauga Group; Upper unit; limestone and shale unit (Cambrian) at surface, covers 30 % of this area

Conasauga Group; Upper unit; limestone and shale unit: Includes limestone and shale unit (Ccsl). Possible equivalent of the Maryville Limestone and Nolichucky Shale of Tennessee with a dolostone member (Ccd).

Lithology: shale; limestone