Add to ORKGUniversity of Minnesota Ph.D. dissertation. August 2013. Advisor: Professor E. Calvin Alexander. 1 computer file (PDF); vii, 165 pages, appendices A-D. Major: Geology.Prompted by French fur-trader Pierre-Charles Le Sueur's 1700 report of caves containing saltpeter (potassium nitrate) along the Minnesota shore of Lake Pepin, this study located what are thought to be the original caves and revealed a hitherto unsuspected widespread district of cave nitrate deposits in the Upper Mississippi Valley (UMV). Of the 103 caves sampled from nine geologic formations, 67% had elevated nitrate concentrations (>50 ppm NO3) in their sediments relative to surrounding surface soils (<10 ppm NO3). These nitrate concentrations, up to 3.5 percent dry weight of...
The relation between sinkhole density and water quality was investigated in seven selected carbonate...
The nitrogen-15 natural abundance method has been a tool for identifying sources of nitrate contamin...
Agricultural land use in areas that are located in karst groundwater basins negatively impact ground...
Saltpeter (niter) is a naturally occurring nitrate mineral historically used to make gunpowder. Dome...
The date of discovery of Saltpeter Cave is not known and there is no way of determining it. Numerous...
Forestville Saltpeter Cave is 1.5 km east of Mammoth Cave National Park on the WKU Green River Prese...
Mammoth Cave, a large limestone cavern in Mammoth Cave National Park in the Central Kentucky karst, ...
Knowledge of nitrate sources and pathways in karst basins remains incomplete and hinders management ...
The hydrogeology, stable isotope distribution, and chemical distribution of Cl- and NO3--N within th...
During the 19th century, the increasing demand for saltpeter, a vital ingredient in gunpowder, led t...
Abstract: This study examined the mechanisms responsible for high nitrate losses to groundwater from...
During the historic mining episodes at Cagle Saltpetre Cave, wooden leaching vats needed for the lix...
Graduation date: 2005Low-permeability geologic units may offer significant chemical and hydraulic\ud...
Uranium processing and waste storage in unlined waste ponds leached contaminants into the groundwate...
The movement of nitrate through the vadose zone has major implications for environmental and human h...
The relation between sinkhole density and water quality was investigated in seven selected carbonate...
The nitrogen-15 natural abundance method has been a tool for identifying sources of nitrate contamin...
Agricultural land use in areas that are located in karst groundwater basins negatively impact ground...
Saltpeter (niter) is a naturally occurring nitrate mineral historically used to make gunpowder. Dome...
The date of discovery of Saltpeter Cave is not known and there is no way of determining it. Numerous...
Forestville Saltpeter Cave is 1.5 km east of Mammoth Cave National Park on the WKU Green River Prese...
Mammoth Cave, a large limestone cavern in Mammoth Cave National Park in the Central Kentucky karst, ...
Knowledge of nitrate sources and pathways in karst basins remains incomplete and hinders management ...
The hydrogeology, stable isotope distribution, and chemical distribution of Cl- and NO3--N within th...
During the 19th century, the increasing demand for saltpeter, a vital ingredient in gunpowder, led t...
Abstract: This study examined the mechanisms responsible for high nitrate losses to groundwater from...
During the historic mining episodes at Cagle Saltpetre Cave, wooden leaching vats needed for the lix...
Graduation date: 2005Low-permeability geologic units may offer significant chemical and hydraulic\ud...
Uranium processing and waste storage in unlined waste ponds leached contaminants into the groundwate...
The movement of nitrate through the vadose zone has major implications for environmental and human h...
The relation between sinkhole density and water quality was investigated in seven selected carbonate...
The nitrogen-15 natural abundance method has been a tool for identifying sources of nitrate contamin...
Agricultural land use in areas that are located in karst groundwater basins negatively impact ground...