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294 T127. Geochemical Tracers of Changes in Seawater Chemistry
(Geochemical Society; Gulf Coast Association of Geological Societies)

Wednesday, 8 October 2008: 8:00 AM
George R. Brown Convention Center, 310CF
Presiding:
E. Troy Rasbury and Franco Marcantonio
8:00 AM
294-1
Secular Change In the Stable Sulfur Isotope Composition of Seawater Sulfate Inferred from Organic Sulfur In Marine-Sourced Crude Oils
Michael H. Engel, Univ of Oklahoma; John E. Zumberge, GeoMark Research, Ltd
8:15 AM
294-2
Secular Variations In the Major Ion Chemistry of Seawater: State of the Art
Tim K. Lowenstein, Binghamton University
8:30 AM
294-3
The Magnesium Isotope Budget of the Modern Oceans
Edward T. Tipper, ETH Zurich; Albert Galy, University of Cambridge; Jérome Gaillardet, Institut de Physique du Globe de Paris-Universit\'e Paris Diderot; Mike J. Bickle, Univ of Cambridge
8:45 AM
294-4
Punctuation and Stasis In the Marine Os Isotope Record, and Implications for Changing Oceanic Inputs
Greg Ravizza, University of Hawaii
9:00 AM
294-5
Reorganization and Strengthening of Ocean Circulation in the Oligocene: Stable Isotopic and Trace Element Records from Western North Atlantic Intermediate Waters
Miriam Katz, Rensselaer Polytechnic Institute; Benjamin Cramer, University of Oregon; Mark Feigenson, Rutgers University; Kenneth Miller, Rutgers University; Chengjie Liu, ExxonMobil Exploration Co; Yair Rosenthal, Rutgers University; Bridget Wade, Texas A&M Univ; James D. Wright, Rutgers University
9:15 AM
294-6
Contrasting Sulfur Isotope and Iron Speciation Measurements across Paleoenvironmental Gradients during the Cenomanian-Turonian Oceanic Anoxic Event (OAE2)
Derek D. Adams, Northwestern University; Matthew T. Hurtgen, Northwestern University; Bradley B. Sageman, Northwestern University; Jason A. Flaum, Northwestern University
9:30 AM
294-7
The Relationship Between 87Sr/86Sr and Seawater Chemistry
Troy Rasbury, Stony Brook University; William E. Holt, Stony Brook University; Aaeron Frodsham, Stony Brook University; Brittany Ekstrom, Stony Brook University; Janette Wilson, Stony Brook University
9:45 AM
294-8
Formation of Early-Cambrian Stratiform Barite Deposits in South China
Hua Yu, Rice University; Gerald R. Dickens, Rice University; Glen Snyder, Rice University
10:00 AM
294-9
Behavior of Carbonate-Associated Sulfate during Meteoric Diagenesis and Implications for the Sulfur Isotope Paleoproxy
Benjamin Gill, University of California-Riverside; Timothy Lyons, University of California; Tracy Frank, Univ of Nebraska
10:15 AM
294-10
Unusual Ca-Rich Formation-Waters from Devonian Aquifers in Western Canada: Possible Relict Seawater?
Ben J. Rostron, Univ of Alberta
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