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Sulfate reduction in ground water of southeastern Montana

Water-Resources Investigations Report 80-9

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Abstract

Ground waters in southeastern Montana were investigated to determine if sulfide production was bacterially mediated. Sulfate-reducing bacteria were detected in 25 of 26 groundwater samples in numbers ranging from 20 to greater than 24,000 bacteria per 100 milliliters for those samples containing bacteria. Stable sulfur isotope fractionation studies indicate a biological role in sulfate reduction. However, sulfate-reducing activity as determined by use of a radioactive sulfur isotope was observed in only 1 of 16 samples. Bacterial dissimilatory sulfate reduction is postulated to be responsible for a major part of the sulfide produced in these ground waters. These bacteria are most likely active in the adsorbed state, possibly in subsurface microzones where environmental conditions are conducive to sulfate reduction. (USGS)

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Sulfate reduction in ground water of southeastern Montana
Series title:
Water-Resources Investigations Report
Series number:
80-9
Edition:
-
Year Published:
1980
Language:
ENGLISH
Publisher:
U.S. Geological Survey, Water Resources Division,
Description:
iii, 13 p. : ill, map ; 26 cm.