PP34B
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
16:00
PP34B-01
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
16:15
PP34B-02
Sulfate in the Palaeoarchean Ocean: Localized Enrichment or Variable Preservation? (69108)
Paul Robert David Mason, Utrecht University, Utrecht, 3584, Netherlands
16:30
PP34B-03
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
16:45
PP34B-04
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
17:00
PP34B-05
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
17:15
PP34B-06
Uranium Stable Isotopes: A Proxy For Productivity Or Ocean Oxygenation? (Invited) (85433)
Silke Severmann, Rutgers University, New Brunswick, NJ, United States
17:30
PP34B-07
Predicting equilibrium uranium isotope fractionation in crystals and solution (84419)
Edwin A Schauble, University of California Los Angeles, Los Angeles, CA, United States
17:45
PP34B-08
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
 
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