Skip to main content

Wilcox formation

Wilcox formation - Irregularly bedded fine to coarse sand, more or less lignitic clay and lignite; includes bauxite bearing Fearn Springs sand member at base.
State Mississippi
Name Wilcox formation
Geologic age Eocene
Comments Map symbols: Ew, Ewb, and Ewn are all included under the Wilcox formation description and all have same color on map. However, each unit is described under this heading so each has its own record
Primary rock type clay or mud
Secondary rock type sand
Other rock types coal
Lithologic constituents
Major
Unconsolidated > Coarse-detrital > SandWilcox formation - Irregularly bedded fine to coarse sand, more or less lignitic clay and lignite; includes bauxite bearing Fearn Springs sand member at base.
Unconsolidated > Fine-detrital > Claymore or less lignitic clay Wilcox formation - Irregularly bedded fine to coarse sand, more or less lignitic clay and lignite; includes bauxite bearing Fearn Springs sand member at base.
Minor
Sedimentary > Coal > LigniteWilcox formation - Irregularly bedded fine to coarse sand, more or less lignitic clay and lignite; includes bauxite bearing Fearn Springs sand member at base.
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.
Counties Grenada - Marshall - Neshoba - Noxubee - Oktibbeha - Webster