GEOCWednesday, March 31, 2004

8:00 AM-12:15 PM Marriott -- Marquis NE, Oral
Microbially Mediated Manganese and Iron Oxidation in the Biosphere
Bacterial Iron and Manganese Oxidation, Occurrence, and Chemical Cycling
Organizers:John R. Bargar
Garrison Sposito
Bradley M. Tebo
Mario Villalobos
8:00 AM 135Ecophysiology and molecular biology of magnetite biomineralization in magnetotactic bacteria
Dirk Schüler
8:45 AM 136Neutrophilic, autotrophic Fe-oxidizing bacteria and rock weathering, carbon cycling in the deep-sea
Katrina J. Edwards
9:20 AM 137Microbially accelerated mobilization and oxidation of Fe(II) and Mn(II) during the dissolution of basaltic glasses
Alexis S. Templeton, Thomas P. Trainor, Peter J. Eng, Brad E. Bailey, Hubert Staudigel, Brad Tebo
9:40 AM 138Diversity of ferrous iron-oxidizing, nitrate-reducing bacteria and anaerobic iron cycling
Kristina L. Straub
10:15 AM Intermission
10:25 AM 139Effects of biogenic substances and light on the oxidation of Fe(II) in surface waters
Barbara Sulzberger, Edith Kaiser, Laurence Meunier, Paul Borer
11:00 AM 140Temperature dependance of microbial Mn oxidation as a control on seasonal concentration variability of dissolved metals in flood-plain rivers
Alan M. Shiller
11:20 AM 141Role of biofilms on the formation of Mn oxyhydroxides on substrates in streams
Martha H. Conklin, Timothy L. Corley, Hanna Gilbert, Elizabeth Robbins, P. A. O'Day
11:55 AM 142Microbial mineral formation in cave ferromanganese deposits
Diana E. Northup, Michael N. Spilde, Penelope J. Boston, Laura J. Crossey, Clifford N. Dahm

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The 227th ACS National Meeting, Anaheim, CA, March 28-April 1, 2004