These cross sections illustrate the regional structure and stratigraphy beneath the Texas continental shelf . The Plio-Pleistocene Series in the western Gulf Coast basin comprises a thick wedge of terrigenous clastic sediment that produces modest volumes of hydrocarbons from offshore leases along the outer shelf and upper slope. Sandstone reservoirs within this wedge have yielded more than 40 million bbl of oil and 2.5 Tcf of gas.
In 1983, the Bureau of Economic Geology published the Atlas of Major Texas Oil Reservoirs, a precedent-setting synthesis of key geological and engineering data on 450 major oil reservoirs grouped into 48 regional plays. This volume, the Atlas of Major Texas Gas Reservoirs, is a companion to the earlier work. It contains information on more than 1,828 reservoirs, with emphasis on 868 reservoirs having cumulative production greater than 30 billion cubic feet of natural gas.
A comprehensive review of Texas earthquakes from 1847 to 1986 has revealed 106 earthquakes of magnitude 3 or greater; of these, 24 are earthquakes for which reports of damage are available, and 1 was responsible for a human fatality. All known reports on Texas seismicity are incorporated in this circular, including original "felt" (eyewitness) reports from contemporary newspapers and other sources.
The purposes of this study were (1) to quantify recent (1974 to 1982) movement of Texas shorelines and vegetation lines by analysis of aerial photographs; (2) to place this movement in historical (pre-1974) context; and (3) to examine the influence of environmental variables such as storms, sea level, subsidence, and sediment supply on the movement of coastal boundaries.