Upward-coarsening sandstone units of the Upper Cretaceous San Miguel Formation in South Texas were deposited in wave-dominated deltas during minor regressive phases, periodically interrupting a major marine transgression. Sediments accumulated in the Maverick Basin within the Rio Grande Embayment. Cross sections and sandstone maps reveal that during deposition of the San Miguel, the Maverick Basin consisted of two subbasins that received sediments from the northwest and the north.

Analysis during the second year was highlighted by a historical characterization of East Texas Basin infilling, the development of a model to explain the growth history of the domes, the continued studies of the Quaternary in East Texas, and a better understanding of the near-dome and regional hydrology of the basin. Each advancement represents a part of the larger integrated program addressing the critical problems of geologic and hydrologic stabilities of salt domes in the East Texas Basin.

Lower Permian (Wolfcampian) strata of the Palo Duro Basin consist of thick, terrigenous clastic and carbonate facies that were deposited in (1) fan-delta, (2) high-constructive delta, (3) carbonate shelf and shelf-margin, and (4) slope and basinal systems. Through Early Permian time, terrigenous detritus was eroded from surrounding highlands and transported by fluvial processes into the Palo Duro Basin.

Since early 1977, the Bureau of Economic Geology has been evaluating several salt-bearing basins within the State of Texas as part of the national nuclear repository program. The Bureau, a research unit of The University of Texas at Austin and the State of Texas, is carrying out a long-term program to gather and interpret all geologic and hydrologic information necessary for description, delineation, and evaluation of salt-bearing strata in the Palo Duro and Dalhart Basins of the Texas Panhandle.

For the past decade, geologists at the Bureau of Economic Geology, The University of Texas at Austin, have prepared various maps of the Texas Coastal Zone. The Environmental Geologic Atlas of the Texas Coastal Zone, a seven-volume series, includes environmental geologic maps as well as other maps depicting special features of the region such as land use, mineral and energy resources, and natural processes. A special atlas, Natural Hazards of the Texas Coastal Zone, illustrates the occurrence and significance of hazards such as hurricane tidal flooding, coastal erosion, and land subsidence.