Sandstone-hosted roll-front uranium ore deposits originate when U(VI) dissolved in groundwater is reduced and precipitated as insoluble U(IV) minerals. Groundwater redox geochemistry, aqueous complexation, and solute migration are important in leaching uranium from source rocks and transporting it in low concentrations to a chemical redox interface where it is deposited in an ore zone typically...

Groundwater in coastal areas is commonly disturbed by tidal fluctuations. A two-dimensional analytical solution is derived to describe the groundwater fluctuation in a leaky confined aquifer system near open tidal water under the assumption that the groundwater head in the confined aquifer fluctuates in response to sea tide whereas that of the overlying unconfined aquifer remains constant. The ...

The region of Chelghoum Laid - Tadjenanet is located in the east Algeria high southern plains Setif, characterized by a highly vulnerable shallow alluvial aquifer. vulnerability groundwater to pollutants relative concept, not measurable or dimensional. nature, quality, and reliability used data have major impact on correctness its assessment. Its classification usually based estimation many mor...

The Yazd-Ardakan basin in Central Iran has two separated aquifers. The shallow unconfined aquifer is supplies 40 Qanats. The deep saturated confined aquifer is the main water storage. Due to over-withdrawal, water table has been decreasing during last 25 years. Recent study shows that the shortage of the aquifer is about 16 meters and land subsidence is 0.5 1.2 meters. Long deep cracks are foun...

Data analysis and modeling within the infrastructure of geographic information systems (GIS) applications are invaluable assets with respect to groundwater resource management and protection. In Florida, ground water comprises more than 90% of potable water resources, which are used by a population of more than 16 million. With an increase of more than 7000 residents per week, demands on Florid...