Authors of this report summarize the results of integrated geologic characterization of the Frontier Formation along the Moxa Arch in southwestern Wyoming in four major areas of study: (1) stratigraphic and depositional systems, (2) diagenesis of reservoir sandstones, (3) disttribution of natural fractures, and (4) horizontal stress orientation. The authors describe the geological elements that were found to be important in characterizing these low-permeability sandstone reservoirs.

This cross section set traverses four Cenozoic depositional sub-provinces: the Rio Grande Embayment, San Marcos Arch, Houston Embayment, and Sabine Arch. For each of these areas, the authors used closely spaced well logs to outline stratigraphic surfaces, para-sequences, and marker beds to delineate regional sequence boundaries, internal stratal architectures, erosional truncation surfaces, and depositional facies associations. Also included are depth ranges of reservoirs in fields adjacent to each line of section.