Citronelle formation (MSPSc;0)

State	Mississippi
Name	Citronelle formation
Geologic age	Pleistocene
Lithologic constituents	Major Unconsolidated > Coarse-detrital > GravelRed gravel Unconsolidated > Coarse-detrital > SandRed sand Minor Unconsolidated > Fine-detrital > ClayWhite clay
Comments	Secondary unit desrciption from USGS Lexicon website (MS002) and MS011: The Citronelle Formation is the most widely distributed unit in the study area, occurring in all 35 quads mapped in south-central MS, and occupying the highest elevations. It is composed of gravel and sandstone with a few thin layers of silt or clay. Has undergone considerable weathering. Contact with the underlying Hattiesburg Formation is an easily recognized regional unconformity, marked by a thin, dark-brown to black, iron-cemented sand. The lenses of clay consist dominantly of kaolinite and illite and tend to be laminated. Large-scale cross-bedding is evident. Underlies terrace deposits. Age is Pliocene and Pleistocene (Li and Meylan, 1994).
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., scale 1:500,000. USGS Geologic Names lexicon found at: http://ngmdb.usgs.gov/Geolex/ https://ngmdb.usgs.gov/Geolex/search Li, Zebao and Meylan, M.A., 1994, Lithostratigraphy and petrology of Neogene and Pleistocene sedimentary rocks, south-central Mississippi: Gulf Coast Association of Geological Societies Transactions, v. 44, p. 383-392.
NGMDB product	NGMDB product page for 16555
Counties	Amite - Copiah - Covington - Forrest - Franklin - George - Greene - Hancock - Harrison - Hinds - Jackson - Jefferson - Jefferson Davis - Lamar - Lawrence - Lincoln - Marion - Pearl River - Perry - Pike - Simpson - Stone - Walthall - Wilkinson

State

Mississippi

Name

Citronelle formation

Geologic age

Pleistocene

Lithologic constituents

Major

Unconsolidated > Coarse-detrital > GravelRed gravel

Unconsolidated > Coarse-detrital > SandRed sand

Minor

Unconsolidated > Fine-detrital > ClayWhite clay

Comments

Secondary unit desrciption from USGS Lexicon website (MS002) and MS011: The Citronelle Formation is the most widely distributed unit in the study area, occurring in all 35 quads mapped in south-central MS, and occupying the highest elevations. It is composed of gravel and sandstone with a few thin layers of silt or clay. Has undergone considerable weathering. Contact with the underlying Hattiesburg Formation is an easily recognized regional unconformity, marked by a thin, dark-brown to black, iron-cemented sand. The lenses of clay consist dominantly of kaolinite and illite and tend to be laminated. Large-scale cross-bedding is evident. Underlies terrace deposits. Age is Pliocene and Pleistocene (Li and Meylan, 1994).

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., scale 1:500,000.

USGS Geologic Names lexicon found at: http://ngmdb.usgs.gov/Geolex/

https://ngmdb.usgs.gov/Geolex/search

Li, Zebao and Meylan, M.A., 1994, Lithostratigraphy and petrology of Neogene and Pleistocene sedimentary rocks, south-central Mississippi: Gulf Coast Association of Geological Societies Transactions, v. 44, p. 383-392.

NGMDB product

NGMDB product page for 16555

Counties

Amite - Copiah - Covington - Forrest - Franklin - George - Greene - Hancock - Harrison - Hinds - Jackson - Jefferson - Jefferson Davis - Lamar - Lawrence - Lincoln - Marion - Pearl River - Perry - Pike - Simpson - Stone - Walthall - Wilkinson