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Role of Microbes in the Smectite-to-Illite Reaction

January 1, 2004

Temperature, pressure, and time have been thought to control the smectiteto-illite (S-I) reaction, an important diagenetic process used for petroleum exploration. We demonstrated that microorganisms can promote the S-I reaction by dissolving smectite through reduction of structural FE(III) at room temperature and 1 atmosphere within 14 days. This reaction typically requires conditions of 300?? to 350??C, 100 megapascals, and 4 to 5 months in the absence of microbial activity. These results challenge the conventional concept of the S-I reaction and of reaction kinetic models.

Citation Information

Publication Year 2004
Title Role of Microbes in the Smectite-to-Illite Reaction
DOI 10.1126/science.1093245
Authors J. Kim, H. Dong, J. Seabaugh, Steven W. Newell, D.D. Eberl
Publication Type Article
Publication Subtype Journal Article
Series Title Science
Series Number
Index ID 70027448
Record Source USGS Publications Warehouse
USGS Organization