Trinity Group (geologic formation)

The Trinity Group is a group (sequence of rock strata) in the Lower Cretaceous lithostratigraphy of Texas, Arkansas, Mississippi, New Mexico, Louisiana and Oklahoma. It is named for the Trinity River of Texas.

Trinity Group (geologic formation)

The Trinity Group is a group (sequence of rock strata) in the Lower Cretaceous lithostratigraphy of Texas, Arkansas, Mississippi, New Mexico, Louisiana and Oklahoma. It is named for the Trinity River of Texas.