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Global Biogeochemical Cycles Opal dissolution kinetics: sediment trap studies of biogenic material fluxes on continental margins; global budgets of carbonate production, export, rain, dissolution, burial |
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Microbial Oxygen Respiration: Nutrient limitation and oxygen consumption rates of bacteria. |
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Microfluidics: Microfluidic examination of carbonate precipitation and dissolution kinetics |
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Sedimentary Diagenesis: Flux budgets and microbial community structure through the sulfate/methane boundary in marine sediments; iron flux and iron isotope signatures in continental margin sediments |
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The Second Great Oxidation Event: Multi-proxy approach to Neoproterozoic marine oxygenation and evolution of the biosphere. |
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Stromatolite Formation: Precambrian analogues in modern alkaline lakes; stromatolite growth rate and trace element incorporation; stromatolitic structures formed around hot springs--their chemical composition and microbial community structure. Stromatolitic structures from deep subsurface veins |
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Geobiology of Mass Extinctions: Geobiologic approach to mass extinctions; the Permo-Triassic and Triassic-Jurassic extinctions |