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Microbial control of silicate weathering in organic-rich ground water

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Franz K. Hiebert, and Philip C. Bennett, 1992, Microbial control of silicate weathering in organic-rich ground water: Science, v. 258, iss. 5080.

Summary

An in situ microcosm study of the influence of surface-adhering bacteria on silicate diagenesis in a shallow petroleum-contaminated aquifer showed that minerals were colonized by indigenous bacteria and chemically weathered at a rate faster than theoretically predicted. Feldspar and quartz fragments were placed in anoxic, organic-rich ground water, left for 14 months, recovered, and compared to unreacted controls with scanning electron microscopy. Ground-water geochemistry was characterized before and after the experiment. Localized mineral etching probably occurred in a reaction zone at the bacteria-mineral interface where high concentrations of organic acids, formed by bacteria during metabolism of hydrocarbon, selectively mobilized [...]

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Type Scheme Key
local-index unknown 70185474
local-pk unknown 70185474
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1126/science.258.5080.278
series unknown Science

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journalScience
parts
typevolume
value258
typeissue
value5080
languageEnglish
citationTypeArticle

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