Geological Society of America

1:30 PM

A MODEL FOR CALCIUM, MAGNESIUM AND SULFATE IN SEAWATER OVER PHANEROZOIC TIME

Robert A. Berner, Yale Univ, New Haven, CT

73690 (Technical Sessions)

1:45 PM

CONSTRUCTION OF SECULAR SEAWATER SR ISOTOPE CURVES: COMPARISON OF 87SR/86SR ANALYSIS BY LASER ABLATION MULTICOLLECTOR ICP-MS AND TIMS

Isabel P. Montanez, Univ. of California, Davis, CA and Qingzhu Yin, Univ. of California, Davis, Davis, CA and Liselle Batt, Univ. of Idaho, Moscow, N/A and Peter E. Isaacson, Univ. of Idaho, Moscow, ID and Mike Pope, Washington State Univ, Pullman, WA

78334 (Technical Sessions)

2:00 PM

CARBON-ISOTOPE STRATIGRAPHY OF THE MOROCCAN ANTI-ATLAS: EARLY CAMBRIAN CARBON CYCLING AND THE IMPORTANCE OF PHYSICALLY BUFFERED METAZOA

Adam C. Maloof, Massachusetts Institute of Technology, Cambridge, MA and Daniel P. Schrag, Harvard Univ, Cambridge, MA and James Crowley, Massachusetts Institute of Technology, Cambridge, MA and Samuel A. Bowring, Massachusetts Institute of Technology, Cambridge, MA

74092 (Technical Sessions)

2:15 PM

A NEW CARBON ISOTOPE CURVE FOR THE EARLY CAMBRIAN SEKWI FORMATION, SELWYN BASIN, NORTHWEST TERRITORIES, CANADA

Kelly A. Dilliard, Washington State Univ, Pullman, WA and Michael C. Pope, Washington State Univ, Pullman, WA and Stephen T. Hasiotis, The Univ of Kansas, Lawrence, KS and Bruce S. Lieberman, University of Kansas, Lawrence, KS

77198 (Technical Sessions)

2:30 PM

400 KA ECCENTRICITY CYCLE MODULATION OF THE SPICE CARBON ISOTOPE EXCURSION ON BOTH SIDES OF THE CAMBRIAN EARTH

Bruce Runnegar, NASA Astrobiology Institute, Moffett Field, CA and Matthew R. Saltzman, Ohio State Univ, Columbus, OH and Ferenc Varadi, Univ of California, Los Angeles, CA

80257 (Technical Sessions)

2:45 PM

CAMBRIAN CHITINOPHOSPHATIC BRACHIOPOD SHELLS YIELD A PRIMARY MARINE d13CCARB SIGNATURE AND REVEAL TERRESTRIAL-MARINE PALEOCEANOGRAPHIC INTERACTION

Clinton A. Cowan, Carleton College, Northfield, MN and David L. Fox, Univ of Minnesota, Minneapolis, MN and Anthony C. Runkel, Minnesota Geol Survey, Minneapolis, MN and Matthew R. Saltzman, Ohio State Univ, Columbus, OH and David J. Auerbach, Carleton College, Northfield, MN

76208 (Technical Sessions)

3:15 PM

THE JOSÉ EXCURSION: A GLOBAL CARBON CYCLE RESPONSE TO THE ARENIG TRANSGRESSION IN THE EARLY ORDOVICIAN

Robert L. Ripperdan, Saint Louis Univ, Saint Louis, MO and James D. Loch, Central Missouri State Univ, Warrensburg, MO and John F. Taylor, Indiana Univ of Pennsylvania, Indiana, PA and Paul M. Myrow, Colorado College, Colorado Springs, CO

79631 (Technical Sessions)

3:30 PM

CO2 AS THE DRIVER OF CHANGES IN SILURIAN CLIMATE?

Bradley D. Cramer, The Ohio State Univ, Columbus, OH and Matthew R. Saltzman, Ohio State Univ, Columbus, OH

75665 (Technical Sessions)

3:45 PM

THE REDOX STATE OF DEVONIAN OCEANS: MO ISOTOPE EVIDENCE

Gwyneth Williams, Arizona State Univ, Tempe, AZ and Ariel D. Anbar, Arizona State Univ, Tempe, AZ and Timothy W. Lyons, Univ. of Missouri, Columbia, MO and Bradley Sageman, Northwestern Univ, Evanston, IL and Gail L. Arnold, California Institute of Technology, Pasadena, CA

80971 (Technical Sessions)

4:00 PM

LOWER MISSISSIPPIAN POSITIVE CARBON ISOTOPE EXCURSION IN SHALLOW WATER CARBONATES, WYOMING AND MONTANA

David A. Katz, Univ of Miami/Rosenstiel School of Marine and Atmospheric Sci, Miami, FL and Peter K. Swart, Univ of Miami/Rosenstiel School of Marine and Atmospheric Sci, Miami, FL and Matthew R. Buoniconti, Univ of Miami/Rosenstiel School of Marine and Atmospheric Sci, Miami, FL and Gregor P. Eberli, Univ of Miami/Rosenstiel School of Marine and Atmospheric Sci, Miami, FL and Langhorne B. Smith, New York State Museum, Albany, NY

77513 (Technical Sessions)

4:15 PM

LATE EARLY CARBONIFEROUS SEASONALITY OF WESTERN PANTHALASSA BASED ON OXYGEN ISOTOPE RECORDS OF BRACHIOPODS FROM XINJIANG, CHINA

Horng-sheng Mii, National Taiwan Normal Univ, Taipei, N/A and I-ting Shu, National Taiwan Normal Univ, Taipei, N/A

77162 (Technical Sessions)

4:30 PM

FOURTH ORDER EUSTATIC SIGNAL FROM CARBON-OXYGEN ISOTOPES, MISSISSIPPIAN SLOPE CARBONATES, VIRGINIA

Thomas Wynn, Virginia Tech, Blacksburg, VA and J. Fred Read, Virginia Tech, Blacksburg, VA

79300 (Technical Sessions)

4:45 PM

CONODONT OXYGEN ISOTOPE RECORDS OF LATE PENNSYLVANIAN PALEOENVIRONMENTAL VARIABILITY

Steven M. Bates, Univ. of Missouri, Columbia, MO and Timothy W. Lyons, Univ of Missouri-Columbia, Columbia, MO