Prairie Bluff chalk and Owl Creek formation (MSKp;0)

State	Mississippi
Name	Prairie Bluff chalk and Owl Creek formation
Geologic age	Upper Cretaceous
Primary rock type	carbonate
Secondary rock type	clay or mud
Other rock types	mixed clastic/carbonate
Lithologic constituents	Major Sedimentary > Carbonate > Limestone > ChalkPrairie Bluff chalk, compact brittle chalk, sandy chalk, and calcareous clay; at base contains many phosphatic molds of fossils; in Ponotoc and Union Counties merges northward into Owl Creek formation, tough blue glauconitic sandy clay. Unconsolidated > Fine-detrital > ClayPrairie Bluff chalk, compact brittle chalk, sandy chalk, and calcareous clay; at base contains many phosphatic molds of fossils; in Ponotoc and Union Counties merges northward into Owl Creek formation, tough blue glauconitic sandy clay.
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. Wingard, G.L., 1993, A detailed taxonomy of Upper Cretaceous and lower Tertiary Crassatellidae in eastern North America; an example of the nature of extinction: U.S. Geological Survey Professional Paper, 1535, 131 p. [http://pubs.er.usgs.gov/publication/pp1535]
Counties	Chickasaw - Clay - Kemper - Noxubee - Oktibbeha - Tippah

State

Mississippi

Name

Prairie Bluff chalk and Owl Creek formation

Geologic age

Upper Cretaceous

Primary rock type

carbonate

Secondary rock type

clay or mud

Other rock types

mixed clastic/carbonate

Lithologic constituents

Major

Sedimentary > Carbonate > Limestone > ChalkPrairie Bluff chalk, compact brittle chalk, sandy chalk, and calcareous clay; at base contains many phosphatic molds of fossils; in Ponotoc and Union Counties merges northward into Owl Creek formation, tough blue glauconitic sandy clay.

Unconsolidated > Fine-detrital > ClayPrairie Bluff chalk, compact brittle chalk, sandy chalk, and calcareous clay; at base contains many phosphatic molds of fossils; in Ponotoc and Union Counties merges northward into Owl Creek formation, tough blue glauconitic sandy clay.

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

Wingard, G.L., 1993, A detailed taxonomy of Upper Cretaceous and lower Tertiary Crassatellidae in eastern North America; an example of the nature of extinction: U.S. Geological Survey Professional Paper, 1535, 131 p.

[http://pubs.er.usgs.gov/publication/pp1535]

Counties

Chickasaw - Clay - Kemper - Noxubee - Oktibbeha - Tippah