This color poster depicts the rock-fabric method for linking geologic descriptions with petrophysical properties.

This nontechnical guidebook describes seven trails that visitors can walk within Pedernales (Spanish for the "flint" found in the park area) State Park, near Johnson City, in the Hill Country of Texas.

Salt structures can be extremely challenging to interpret and understand. To begin with, the high velocity contrast between salt and most sedimentary rocks means that many salt structures are poorly imaged on seismic data. Furthermore, salt behaves as a fluid in the subsurface, creating geometries unlike anything found in nonsalt provinces.

Use of groundwater-flow models for prediction of future availability of water resources is standard practice. Having accurate hydraulic parameters for input into groundwater-flow models is critical to the generation of realistic local and regional water-resource management plans.