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Mobile sediments in a karst aquifer
In karst aquifers, mobile sediments may play a fundamental role in determining water quality by concentrating and transporting contaminants. This study investigates spatial characteristics of sediment in a karst aquifer, ...
Vadose-zone geochemistry of playa wetlands, High Plains, Texas
Soil-gas beneath 3 playa wetlands was monitored June 1992-May 1995 and sampled from as deep as 45 feet within the >2OO-ft unsaturated zone. Playa soils, surface water, rainwater, and groundwater were also analyzed, along ...
Lower permian sequence stratigraphy of the western Delaware Basin margin, Sierra Diablo, West Texas
The Sierra Diablo provide unique exposures of Lower Permian carbonate platforms, in which sequence stratigraphic analysis based on three-dimensional stratal geometries can be integrated with conventional one-dimensional ...
Geologic and hydrologic constraints on fluid and heat flow in overpressured rocks of the Rio Grande Embayment, Gulf of Mexico Basin
Fluids are episodically expulsed from extremely overpressured sediments during natural hydrofracturing events and discharge vertically along regional fault zones in the Rio Grande Embayment. The basal 9 km (29,500 ft) of ...
Climatic and tectonic controls on quaternary eolian sedimentary sequences of the Chott Rharsa Basin, southern Tunisia
This dissertation presents an investigation of climatic and tectonic controls on Quaternary eolian sedimentary sequences of the Chott Rharsa Basin on the northern margin of the Sahara Desert, in southern Tunisia. This ...
Delineation of the ground-water flow systems of the Eagle Flat and Red Light Basins of Trans-Pecos Texas
The hydrogeologic systems of the Eagle Flat and Red Light basins of Trans-Pecos are characterized by three-dimensional flow components, fracture and double-porosity flow, hydrochemically zoned water in alternating permeable ...