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Vicksburg group and Chickasawhay limestone

Vicksburg group and Chickasawhay limestone - Chickasawhay limestone, sandy limestone, and sand, present only in eastern MS (mapped with it is the overlying Paynes Hammock sand of Miocene age); Vicksburg group, predominantly limestone and marl, but contains some bentonite and near the top, chocolate-colored clay and some sand.
StateMississippi
NameVicksburg group and Chickasawhay limestone
Geologic ageOligocene
Original map labelOv
Primary rock typelimestone
Secondary rock typesand
Other rock typesbentonite; clay or mud
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone
Minor
Unconsolidated > Coarse-detrital > Sand
Unconsolidated > Marl
Incidental
Unconsolidated > Fine-detrital > ClayChocolate-colored clay.
Sedimentary > Clastic > Mudstone > Claystone > BentoniteVicksburg group, predominantly limestone and marl, but contains some bentonite.
Map references
Moore, William Halsell, 1969, reprinted 1985, Geologic Map of Mississippi, Compiled by Bicker, A. R., Jr., a revision of the geologic map published by the MS Geological Survey in 1945 in cooperation with the USGS, revised from data submitted by Dr. E. E. Russell of MS State University from published reports of the MS Geological Survey and from field revisions, Mercury Maps Inc., Jackson, MS.
Unit references
Moore, William Halsell, 1969, reprinted 1985, Geologic Map of Mississippi, Compiled by Bicker, A. R., Jr., a revision of the geologic map published by the MS Geological Survey in 1945 in cooperation with the USGS, revised from data submitted by Dr. E. E. Russell of MS State University from published reports of the MS Geological Survey and from field revisions, Mercury Maps Inc., Jackson, MS.
Geographic coverageClaiborne - Clarke - Hinds - Issaquena - Jasper - Jones - Madison - Rankin - Smith - Warren - Wayne - Yazoo

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