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. Facies maps, prepared along selected horizons and thought to represent a brief period of time, and maps illustrating features along critical stratigraphic boundaries are interpreted to illustrate paleoenvironmental distributions through time, as well as stratigraphic relationships.

This report presents a statistical analysis of outcrop-permeability data for quantifying spatial patterns of petrophysical heterogeneity in carbonates that are difficult or impossible to observe in the subsurface. In the study, workers made permeability measurements using plug samples and mechanical field permeameters (MFP) from Permian and Cretaceous shallow-water platform carbonate outcrops in West Texas and New Mexico. The report includes a detailed discussion of factors affecting the accuracy of the measurements and the portability of resulting spatial statistics to subsurface studies.