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, ...

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 ...

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 ...

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 ...

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 ...

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 ...