Study of thick sequence of Jurassic, Cretaceous, and Eocene through Pliocene Tertiary nonmarine sedimentary rocks and volcanic and intrusive rocks.

Geophysical data indicate the thickness of Cenozoic sedimentary rocks and the dsitribution, and locally the thickness, of igneous rocks.

Stratigraphy and structural geology, both of the surficial deposits and bedrock. Two companion reports describe the hydrology, saltpan, and plant ecology.