Volume of Mesozoic and Cenozoic sediments in Central Gulf Coastal Plain of United States, Part 3 of Murray, G. E., Sedimentary volumes in Gulf Coastal Plain of United States and Mexico

Gulfward-dipping Mesozoic and Cenozoic sediments underlie approximately 145,000 square miles in the Central Gulf Coast between Texas on the west and Georgia on the east. Pre-Cretaceous, Coahuilan, Comanchean, and early Gulfian rocks are predominantly red-bed elastics in the eastern portion of this area; westward and downdip marine facies predominate. Extensive marine deposits comprise the middle and late Gulfian; arenaceous facies predominate in the east; argillaceous and calcareous facies are prevalent westward and downdip. Tertiary deltaic sediments center in Louisiana and Mississippi; eastward and down-dip marine deposits prevail. Fluviatile and deltaic Quaternary deposits occur as a surficial mantle over much of the Central Gulf Coast; offshore these deposits are replaced by marine facies.