A series of two 1:500,000 scale maps showing the Geothermal resources of South Texas.

We examined the relationship between three data types--geologic maps, measurements of pavement deflection under load, and seismic refraction data-- from diverse geologic settings in Texas to determine (1) whether geologic maps and seismic refraction data might be used to interpret deflections and

Low recovery efficiencies of sandstone reservoirs in the Jackson-Yegua Barrier/ Strandplain Sandstone play mark it as a large hydrocarbon resource target for advanced recovery techniques.

The Jackson-Yegua Barrier/Strandplain Sandstone play is a prolific oil-producing trend in South Texas that has high average porosity (31 percent) and permeability (600 md).

Cores and supporting petrophysical data from 20 wells in McAllen Ranch field were analyzed.

The publication comprises 24 structural dip cross sections, spaced 15 to 20 mi apart along the Texas coast, and 4 structural strike cross sections. Dip sections extend from near the Wilcox outcrop to the coastline.

Potential geopressured geothermal reservoirs in the Vicksburg Formation are limited to Hidalgo County along the Lower Texas Gulf Coast.

Geologic map that depicts the surface geology of parts of Webb, Duval, Jim Wells, Kleberg, Brooks, Jim Hogg, and Zapata Counties

Geologic map that depicts surface geology of Starr, Hidalgo, Willacy, and Cameron Counties and parts of Zapata, Jim Hogg, Brooks, and Kenedy Counties.

A preliminary study of the Frio sand distribution and formation temperatures and pressures was undertaken in order to define prospective areas in which a more detailed reservoir analysis is necessary prior to the selection of a site for a geothermal well.