Geochemical processes in ground water resulting from surface mining of coal at the Big Sky and West Decker Mine Areas, Southeastern Montana. Water resources investigation report
This report describes the geochemical processes that occur in ground water as a result of surface mining of coal at the Big Sky and West Decker Mine areas in southeastern Montana. The report is based on data obtained during 1988 through 1990 from intensive sampling and analysis of rock material and water at several points along flow paths extending from coal aquifers upgradient of each mine, through spoils aquifers to downgradient coal or other aquifers. Data requirements included mineralogy, elemental chemistry, and ion-exchange capabilities obtained from solid-phase samples collected by core drilling during monitoring-well installation. Other data include ground-water samples analyzed for major and minor chemical constituents, isotopic composition, and dissolved gases. The data were then analyzed with geochemical models.
- Research Organization:
- Geological Survey, Helena, MT (United States). Water Resources Div.
- OSTI ID:
- 177555
- Report Number(s):
- PB-96-125992/XAB; USGS/WRIR-95-4097; TRN: 60112121
- Resource Relation:
- Other Information: PBD: Sep 1995
- Country of Publication:
- United States
- Language:
- English
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