New Insights on Geochemical Cycles toward Redox Proxy Development and Application to the Ancient Ocean and Atmosphere III

Wednesday, 16 December 2015: 16:00-18:00
2010 (Moscone West)
Primary Conveners:  Xiao-Ming Liu, Carnegie Inst of Washington, washington DC, DC, United States
Conveners:  Timothy Lyons, University of California-Riverside, Riverside, CA, United States and Dalton Shane Hardisty, University of California-Riverside, Riverside, CA, United States
Chairs:  Dalton Shane Hardisty, University of California Riverside, Riverside, CA, United States and Timothy W Lyons, University of California Riverside, Riverside, CA, United States
OSPA Liaisons:  Xiao-Ming Liu, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
Oxygen and sulfur isotopes in sulfate in modern euxinic systems with implications for evaluating the extent of euxinia in ancient oceans (Invited) (60891)
Maya L Gomes, Harvard University, Cambridge, MA, United States and David T Johnston, Harvard-Earth & Planet Science, Cambridge, MA, United States
Sulfate in the Palaeoarchean Ocean: Localized Enrichment or Variable Preservation? (69108)
Paul Robert David Mason, Utrecht University, Utrecht, 3584, Netherlands
Multi-proxy study of Ocean Anoxic Event 2 (Cenomanian-Turonian) yields new perspective on the drivers for Mesozoic anoxic events (83614)
Bradley B Sageman1, Matthew Hurtgen1, Andrew D Jacobson1 and David S Selby2, (1)Northwestern University, Evanston, IL, United States, (2)University of Durham, Durham, United Kingdom
Glacial-interglacial Variations of Molybdenum Isotopes in the Peruvian Oxygen Minimum Zone (78092)
Christopher Siebert, Martin Frank and Florian Scholz, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
A potential relationship between molybdenum speciation and its isotopic signature in sedimentary records: New insights from old shales (80544)
Anthony Chappaz, Central Michigan University, Institute for Great Lakes Research - Dept. of Earth and Atmospheric Sciences - Dept. of Chemistry and Biochemistry, Mount Pleasant, MI, United States
Uranium Stable Isotopes: A Proxy For Productivity Or Ocean Oxygenation? (Invited) (85433)
Silke Severmann, Rutgers University, New Brunswick, NJ, United States
Predicting equilibrium uranium isotope fractionation in crystals and solution (84419)
Edwin A Schauble, University of California Los Angeles, Los Angeles, CA, United States
Uranium Isotope Evidence for Temporary Ocean Oxygenation Following the Sturtian Glaciation (77083)
Kimberly V Lau1, Katharine Maher1, Francis A Macdonald2 and Jonathan Payne1, (1)Stanford University, Stanford, CA, United States, (2)Harvard University, Cambridge, MA, United States