Embayment Megagroup

Embayment Megagroup
Stratigraphic range: Eocene–Cretaceous
TypeMega Group
Sub-units
  • Mounds Gravel, Grover Gravel
  • Wilcox Formation
  • Porters Creek Formation
  • Clayton Formation
  • Owl Creek Formation
  • McNairy Formation
  • Post Creek Formation
Thicknessupto ~1000'
Lithology
PrimarySandstone, Clay
OtherSiltstone, Lignite
Location
Region
Country United States
ExtentGulf Coast Plain to Southern Illinois

The Embayment Mega Group is found from the Gulf of Mexico north to southern Illinois.