Preliminary delineation and description of the regional aquifers of Tennessee– The Cretaceous aquifer system of west-Tennessee

The Cretaceous aquifer in Tennessee is composed of sand and clay of Cretaceous age. The aquifer occurs in west Tennessee from the Mississippi River east to the Tennessee River. Groundwater in the Cretaceous aquifer is recharged at outcrops and through overlying permeable deposits. The overlying Porter 's Creek clay acts as the upper confining layer.