The geometry of Permian bedded salt in the Midland Basin is a product of the interaction between depositional facies and postdepositional modification by salt dissolution.

Written for a nontechnical audience, this guide describes the Tuff Canyon area in detail and includes a glossary of terms that might be unfamiliar to non-geologists. Color photographs and sketches depict the geologic features, fauna, and flora of this part of Big Bend National Park.

Six interlocking regional stratigraphic cross sections of Lower Cretaceous strata (middle Albian-lower Cenomanian) of the Edwards and Stockton Plateaus of West Texas illustrate the vertical and lateral extent of lithostratigraphic units and distribution of facies and facies tracts.