PC51A:
High-Resolution Geochemical Proxies of Global Change: Progress, Problems, and Utility I


Session ID#: 7246

Session Description:
Knowledge of climate and environmental change throughout geological time is derived from deep-sea and terrestrial records representing long time scales. While records of climate and environmental changes at long time scales are essential, high-resolution records at seasonal, annual, and decadal scales are equally important and under-represented in the literature. Much of what we know about past environments is based on the geochemical signature in various proxy archives. While substantial progress continues to be made in this area, specific obstacles and problems do exist. We encourage papers presenting geochemical records of global change, including calibration/validation studies, in biologic or inorganic carbonates, and highly resolved (decadal resolution) sediments. Geochemical studies highlighting recent progress, problems, or utility are especially welcome.
Primary Chair:  Madelyn Mette, Uni Research Climate, Bjerknes Centre for Climate Research, Bergen, Norway
Chairs:  Lauren E Graniero, University of North Carolina, Department of Geological Sciences, Chapel Hill, NC, United States, Nina Whitney, Iowa State University, Geological and Atmospheric Sciences, Ames, IA, United States and David P Gillikin, Union College, Geology, Schenectady, NY, United States
Moderators:  Madelyn Mette, Uni Research Climate, Bjerknes Centre for Climate Research, Bergen, Norway, Lauren E Graniero, University of North Carolina at Chapel Hill, Department of Geology, Chapel Hill, NC, United States and Nina Whitney, Iowa State University, Geological and Atmospheric Sciences, Ames, IA, United States
Student Paper Review Liaison:  David P Gillikin, Union College, Geology, Schenectady, NY, United States
Index Terms:

4215 Climate and interannual variability [OCEANOGRAPHY: GENERAL]
4532 General circulation [OCEANOGRAPHY: PHYSICAL]
4825 Geochemistry [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4999 General or miscellaneous [PALEOCEANOGRAPHY]

Abstracts Submitted to this Session:

PC51A-01
Implications of High Ba/Ca and Mn/Ca Ratios in the Non-Spinose Planktonic Foraminifer Neogloboquadrina dutertrei for Water-Column Microenvironments and Cycling of Barite (93306)
Ann D Russell1, Jennifer S Fehrenbacher2, Edward Chu1, Catherine V Davis1 and Howard J Spero1, (1)University of California Davis, Department of Earth and Planetary Sciences, Davis, CA, United States, (2)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States
PC51A-02
Ground-truthing the Foraminifera-bound Nitrogen Isotope Paleo-proxy in the Modern Sargasso Sea (91114)
Sandi Smart1, Haojia Abby Ren2, Sarah E Fawcett3, Maureen H Conte4, Patrick A Rafter5, Karen K Ellis3, Mira A Weigand3 and Daniel Mikhail Sigman6, (1)Stellenbosch University, Department of Earth Sciences, Matieland, South Africa, (2)Department of Geoscience, National Taiwan University, Taipei, Taiwan, (3)Princeton University, Department of Geosciences, Princeton, NJ, United States, (4)Bermuda Institute of Ocean Sciences, St.George's, Bermuda, (5)University of California Irvine, Irvine, CA, United States, (6)Princeton University, Princeton, NJ, United States
PC51A-03
High Frequency Fluctuations in the Eastern Tropical North Pacific Oxygen Minimum Zone During the Last 1200 Years (93185)
Caitlin Tems1, William Berelson1, Robert Thunell2, Xiaomei Xu3 and Deborah Khider1, (1)University of Southern California, Los Angeles, CA, United States, (2)University of South Carolina Columbia, School of Earth, Ocean and Environment, Columbia, SC, United States, (3)University of California Irvine, Irvine, CA, United States
PC51A-04
Assessment of Coral Sr/Ca Variations in Orbicella faveolata Colonies in Veracruz, Mexico (93222)
Kristine L DeLong1, Robin Cobb1, Amy J Wagner2, J Harold Hudson3, Gilman Ouellette Jr4 and Achim Dirk Herrmann5, (1)Louisiana State University, Geography and Anthropology, Baton Rouge, LA, United States, (2)UNC - Wilmington, Wilmington, NC, United States, (3)Reef Tech, Inc., Miami, FL, United States, (4)Louisiana State University, Geography & Anthropology, Baton Rouge, LA, United States, (5)Louisiana State University, Geology and Geophysics, Baton Rouge, LA, United States
PC51A-05
Insights Into Intermediate Ocean Barium Cycling From Deep-Sea Bamboo Coral Records on the California Margin (91336)
Michele LaVigne1, Gabriela Serrato Marks1, Megan Maria Freiberger1, Hannah Rose Miller1, Tessa M Hill2, Ann P McNichol3 and Mary Lardie Gaylord3, (1)Bowdoin College, Department of Earth and Oceanographic Science, Brunswick, ME, United States, (2)University of California Davis, Davis, CA, United States, (3)Woods Hole Oceanographic Institution, National Ocean Sciences Accelerator Mass Spectrometry Facility, Woods Hole, MA, United States
PC51A-06
An ensemble approach to reconstructing mid-20th century climate using young fossil corals: pitfalls and opportunities (92723)
Nicholas Thomas Hitt1, Kim M Cobb2, Hussein R Sayani2, Pamela R Grothe2, Tianran Chen2, Hai Cheng3, R. Lawrence Edwards4, Yanbin Lu5, Daniel Deocampo6 and Kayla J Townsend2, (1)Georgia Institute of Technology, Earth and Atmospheric Sciences, Atlanta, GA, United States, (2)Georgia Institute of Technology Main Campus, Earth and Atmospheric Sciences, Atlanta, GA, United States, (3)Xi'an Jiaotong University, Institute of Global Environmental Change, Xi'an, China, (4)University of Minnesota, Minneapolis, MN, United States, (5)University of Minnesota, Department of Earth Sciences, Minneapolis, MN, United States, (6)Georgia State University, Atlanta, GA, United States
PC51A-07
High-resolution Atmospheric pCO2 Reconstruction across the Paleogene Using Marine and Terrestrial δ13C records (88066)
Ying Cui and Brian Schubert, University of Louisiana at Lafayette, School of Geosciences, Lafayette, LA, United States
PC51A-08
The smallest Gliders in the Ocean- Temperature Recordings from Pteropods using SIMS (91062)
Nina Keul1, Ian J Orland2,3, John W Valley3, Reinhard Kozdon4 and Peter B deMenocal4, (1)Lamont Doherty Earth Observatory, New York, NY, UNITED STATES, (2)University of Minnesota Twin Cities, Dept. of Earth Sciences, Minneapolis, MN, United States, (3)University of Wisconsin Madison, WiscSIMS, Dept. of Geoscience, Madison, WI, United States, (4)Lamont Doherty Earth Observatory, Palisades, NY, United States
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