Rock-water interactions of the Madison Aquifer, Mission Canyon Formation, Williston Basin, North Dakota /
300 bars, and ionic strengths up to 5 M. Geochemical
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1994.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | 300 bars, and ionic strengths up to 5 M. Geochemical analysis program to produce color-coded maps that depict and anhydrite) were integrated with a graphical matrix and Mesozoic strata within the Williston Basin comprise aquifer. These analytical techniques were used to infer area, away from the area of high brine concentration and high basin, which coincides with areas of high brine both, halite and anhydrite, the subsurface areal extent of brines. The physiochemical parameters of the basinal waters chemical interactions influencing the basinal waters in the concentrations, temperatures, and pressures. In the case for contains both fresh meteoric waters and high density brines dissolution should be occurring toward the center of the encompass temperature and pressure regimes up to 1300C and evaporate strata apparently controls the ground water Geochemical speciation was coupled with data visualization interactions that occur in groundwaters within this basin. interpretations in order to understand specific rock-water is precipitating toward the eastern portion of the study low pH irrespective of the effect by temperature. Based on Madison Aquifer. These inferences were then used to predict maps of calculated saturation indices, calcite and dolomite meteoric water in the Madison Aquifer is diverted around the modeling, based on a Pitzer-based model, was used to identify northwestern South Dakota, and western North Dakota. The of the United States. This area includes eastern Montana, potential precipitation-dissolution boundaries within the potential precipitation-dissolution reactions occurring in- regions of porosity alteration. Carbonate distribution seems regions where secondary porosity might be forming. Paleozoic Results from the speciation model were used to predict saturation state of the evaporate species. Halite probably saturation with respect to calcite, dolomite, halite, gypsum, several aquifer horizons. The Mississippian Madison Aquifer stratigraphy and geologic history of this basin are well study rockwater interactions in highly saline aquifers. temperatures. that have concentrations up to 300,000 mg/L. Flow of fresh the Madison Aquifer system. Results (i.e., degree of The Williston Basin is located in the northern Great Plains to be controlled by ground water chemistries of high PCO2 and understood and provide an excellent framework in which to |
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| Item Description: | "Major subject: Geology". Vita. |
| Physical Description: | viii, 98 leaves : illustrations ; maps ; 28 cm. Also available online. |
| Bibliography: | Includes bibliographical references. |