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Paleobiology & Biosignatures: March 2007


Special session at the 210th Meeting of the American Astronomical Society in Honolulu, Hawaii
Thursday May 31 (Morning) Convenors: Nader Haghighipour and Eric Gaidos (University of Hawaii NAI Lead Team)

A New Model for the Early Ocean

NAI's Marine Biological Laboratory and Carnegie Institution of Washington Teams are contributing authors on a new paper in Earth and Planetary Science Letters presenting a new model for the evolution of Proterozoic deep seawater composition based on rare earth elements. Their data suggest transitional, suboxic conditions in the deep ocean (vs. sulfidic), which likely limited nutrient concentrations in seawater and, consequently, may have constrained biological evolution. [Source: NAI Newsletter]

Special Session "Microbially mediated processes governing the redox cycling of metals" at the 2007 Goldschmidt Conference, Cologne (Germany) Session Organizers: Colleen Hansel, School of Engineering and Applied Sciences, Harvard University Andreas Kappler, Center for Applied Geoscience, University of Tbingen