Geochemical evolution of water in the Madison Aquifer in parts of Montana, South Dakota, and Wyoming

Busby, John F.; Plummer, L. Niel; Lee, R.W.; Hanshaw, Bruce B.

doi:10.3133/pp1273f

Cited by 26 publications

(14 citation statements)

References 10 publications

(13 reference statements)

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“…Equilibrium thermodynamics can only indicate the potential for such phase transfers. In reality, a number of kinetic reasons exist that may cause systems to behave differently than predicted (Nordstrom and Ball, 1989;Busby et al, 1991). However, the saturation index can be useful for examining potential secondary phases and the dissolution of the mineral of interest in aquifer system.…”

Section: Thermodynamic Calculationmentioning

confidence: 99%

Mineral-water interaction and hydrogeochemistry in the Samkwang mine area, Korea.

Jeong¹

2001

Geochem. J.

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The abandoned Samkwang mine area was chosen as the research site for radioactive waste disposal in Korea. The study site chiefly consists of Pre-cambrian granitic gneiss, which is considered as potential host rock of a radioactive waste repository. In this study, the chemical composition and residence time of groundwater collected at different depths and locations in the mine adits and boreholes nearby the mine were investigated. The factor analysis of hydrochemical data was applied to illustrate mineral-water reaction processes controlling the chemical composition of groundwater. Three chemical types of groundwater were recognized: Ca-HCO 3 type of shallow groundwater and Ca(Mg)-SO 4 (HCO 3 ) type of shallow and deep groundwater in the mine, and Na-HCO 3 type of borehole groundwater. Tritium level indicates that the deep and borehole groundwater is older water recharged before 1950's, and that shallow groundwater is younger water recharged after 1950's. Thermodynamic equilibrium states between major minerals and water samples were calculated in the term of the activities of chemical constituents. The results of this study show that groundwater chemistry in the study area was evolved through the dissolution of calcite, chlorite, albite and sulfides, and the precipitation of clay and oxide minerals. The results of this study would be useful for the assessment of hydrochemical and mineralogical effects on the fate of radionuclides along groundwater pathways in the abandoned mine as a potential radioactive waste repository.

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Section: Thermodynamic Calculationmentioning

confidence: 99%

Mineral-water interaction and hydrogeochemistry in the Samkwang mine area, Korea.

Jeong¹

2001

Geochem. J.

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“…The chemical trends seen in Figures 33 are similar to major-ion evolution sequences (Chevotarev, 1955;Freeze and Cherry, 1979) and to dedolomitization, which is dissolution of dolomite and precipitation of calcite caused by the dissolution of anhydrite (Back and Hanshaw, 1970;Hanshaw and Back, 1979;Back et al, 1983;Busby et al, 1990;Plummer et al, 1990). Therefore, we also chose dissolved sulfate as a reaction-progress variable to examine water chemistry.…”

Section: Future Plansmentioning

confidence: 97%

“…Supersaturation with respect to calcite causes precipitation of the mineral, resulting in a decrease of alkalinity and further dissolution of dolomite and anhydrite. This is a typical mechanism of dedolomitization in carbonate rocks (Back and Hanshaw, 1970;Hanshaw and Back, 1979;Back et al, 1983;Busby et al, 1990;Plummer et al, 1990). (Dickey, 1969).…”

Section: Future Plansmentioning

confidence: 99%

Anisotropy and spatial variation of relative permeability and lithologic character of Tensleep Sandstone reservoirs in the Bighorn and Wind River Basins, Wyoming. Annual report, October 1, 1994-- September 30, 1995

Dunn¹

1996

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“…The groundwater plays a significant role in the disintegration and decomposition of rock masses and minerals to soil and then to clay particles; during the process the aqueous system attains equilibrium with the composition of these clay minerals which decides the fate of dissolution of minerals and the chemical evolutionary pathways (Venturelli et al 2003;Gomez et al 2006;Chidambaram et al 2007a;Prasanna et al 2008). In reality, a number of kinetic reasons exist that may cause systems to behave differently than predicted (Nordstrom and Ball 1989;Busby et al 1991). However, the SI of these clay minerals can be useful for examining potential secondary phases and the dissolution of the mineral of interest in aquifer system.…”

Section: Introductionmentioning

confidence: 95%

Significance of saturation index of certain clay minerals in shallow coastal groundwater, in and around Kalpakkam, Tamil Nadu, India

et al. 2011

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The saturation index of clay minerals like Gibbsite, Kaolinite, Illite, Montmorillonite and Chlorite in groundwater were studied in detail by collecting 29 groundwater samples from the shallow coastal aquifers in and around Kalpakkam. The samples collected were analysed for major cations, anions and trace elements by using standard procedures. The study reveals that pH has a significant role in the saturation index (SI) of minerals. It also shows that the relationship of electrical conductivity to the SI of these minerals is not significant than that of the ionic strength, log pCO 2 values, and alumina silica ratio have significant relation to the SI of these clay minerals. The SI of these clay minerals was spatially distributed to identify the areas of higher SI. Silica has good correlation to SI of Kaolinite, Gibbsite and Montmorillonite and Al has good correlation to SI of all the minerals except to that of Chlorite.

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Geochemical evolution of water in the Madison Aquifer in parts of Montana, South Dakota, and Wyoming

Cited by 26 publications

References 10 publications

Mineral-water interaction and hydrogeochemistry in the Samkwang mine area, Korea.

Mineral-water interaction and hydrogeochemistry in the Samkwang mine area, Korea.

Anisotropy and spatial variation of relative permeability and lithologic character of Tensleep Sandstone reservoirs in the Bighorn and Wind River Basins, Wyoming. Annual report, October 1, 1994-- September 30, 1995

Significance of saturation index of certain clay minerals in shallow coastal groundwater, in and around Kalpakkam, Tamil Nadu, India

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