|Name||Pascagoula and Hattiesburg formation|
Unconsolidated > Coarse-detrital > SandSandy clay and sand.
Unconsolidated > Fine-detrital > ClayGreenish and bluish-green clay.
Sedimentary > Clastic > SiltstoneGray siltstone and sand, locally fossiliferous.
|Comments||Secondary unit desrciption from USGS Lexicon website (MS002) and MS003: A maximum 4,900-ft-thick Miocene sequence underlies younger sandy-clayey alluvial-paralic deposits in MS. In absence of clearly definable and correlatable litho- or biostratigraphic horizons to bracket them, application of formation names, previously assigned to paralic-alluvial intervals (Oligocene to Miocene Catahoula Formation, Miocene Hattiesburg and Pascagoula Formations, and Pliocene Graham Ferry Formation; Brown and others, 1944) is unacceptable in MS. In intervals for which a Miocene or Pliocene age cannot be established, the term "undifferentiated Neogene clastics" is recommended. Whenever applicable, the names Pascagoula and Graham Ferry Members of Pensacola Formation are now used. Author follows usage of Otvos (1994).|
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/
Otvos, E.G., in press (1994?), Mississippi Gulf Coast; geologic evolution, stratigraphy, coastal geomorphology, and Gulf-wide Pleistocene correlations: U.S. Geological Survey Bulletin.
|Counties||Adams - Amite - Copiah - Covington - Forrest - Franklin - George - Greene - Hancock - Harrison - Jackson - Jefferson - Jefferson Davis - Jones - Lamar - Lawrence - Lincoln - Marion - Pearl River - Perry - Pike - Simpson - Smith - Stone - Walthall - Wayne - Wilkinson|