PP33F:
Trace Metals as Recorders of Biogeochemical Cycling in Modern and Ancient Settings Posters


Submit an Abstract to this Session


Session ID#: 51771

Session Description:
Trace elements (TEs) are critical tools in geochemistry and for the study of biogeochemical cycles in the present and past. For example, in marine systems, TEs are present either in soluble form or adsorbed onto particles within authigenic minerals and dissolved organic matter. The mobility and speciation of TEs are highly complex and are functions of redox conditions, pH, and complexing agents and allow for quantitative reconstructions of past biogeochemical cycles. Accurate reconstructions of past biological signatures and geochemical processes based on the trace elements in the oxic, anoxic, or euxinic environments require an understanding of the mechanisms responsible for changes in trace element concentrations in different redox environments and that are preserved in the rock record. We seek contributions that employ both traditional and novel geochemical and geomicrobiological techniques towards enhancing the understanding of TEs in the environment and use TEs to interpret the paleoredox and paleoproductivity.
Primary Convener:  Minming Cui, Johns Hopkins University, Department of Earth & Planetary Sciences, Baltimore, MD, United States; Tulane University, Department of Earth & Environmental Sciences, New Orleans, LA, United States
Conveners:  Maya Gomes, Johns Hopkins University, Department of Earth & Planetary Sciences, Baltimore, MD, United States, Karen Haley Johannesson, Tulane Univ Earth&Environ Sci, New Orleans, LA, United States and Saugata Datta, The University of Texas at San Antonio, Department of Earth and Planetary Sciences, San Antonio, United States
Primary Liaison:  Minming Cui, Tulane University, Department of Earth & Environmental Sciences, New Orleans, LA, United States; Johns Hopkins University, Department of Earth & Planetary Sciences, Baltimore, MD, United States
Chairs:  Minming Cui, Tulane University, Department of Earth & Environmental Sciences, New Orleans, LA, United States and Maya Gomes, Johns Hopkins University, Department of Earth & Planetary Sciences, Baltimore, MD, United States
OSPA Liaison:  Qiong Zhang, University of Oxford, Earth Sciences, Oxford, United Kingdom

Cross-Listed:
  • B - Biogeosciences
  • OS - Ocean Sciences
Index Terms:

0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0489 Trace element cycling [BIOGEOSCIENCES]
4875 Trace elements [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4912 Biogeochemical cycles, processes, and modeling [PALEOCEANOGRAPHY]

Abstracts Submitted to this Session:

How to Fix Molybdenum. (Invited) (395718)
George R Helz, Univ Maryland, College Park, MD, United States
Early diagenetic reactive transport modeling of uranium concentrations and ‘stable’ isotopes (Invited) (441043)
Kimberly V Lau, University of California - Riverside, Earth Sciences, Riverside, CA, United States, Timothy Lyons, University of California Riverside, Earth and Planetary Sciences, Riverside, CA, United States and Katharine Maher, Stanford University, Earth System Science, Stanford, CA, United States
Decoupled Mg and Li isotopic trends in the wake of Marinoan glaciation (448885)
Fangbing Li, Peking University, Beijing, China; Yale University, New Haven, CT, United States, Noah Planavsky, Yale University, Department of Earth and Planetary Sciences, New Haven, CT, United States, Terry T. Isson, University of Waikato, Tauranga, New Zealand, Andrew C Knudsen, Lawrence University, Appleton, WI, United States and Guangyi Wei, Yale University, New Haven, United States
Chromium Isotope Evidence for Expanded Ocean Anoxia at P-T Boundary from Xiakou Section, South China (424867)
Ziyao Fang, Liping Qin, Guijie Zhang, Yilun Xu and Xu Zhang, University of Science and Technology of China, Hefei, China
The Mesozoic Marine Algal Revolution and trace metals: comparing metal acquisition strategies (392715)
Qiong Zhang1, Bruno Nevado2, Joseph T Snow1, Dmitry Filatov2 and Rosalind E M Rickaby1, (1)University of Oxford, Earth Sciences, Oxford, United Kingdom, (2)University of Oxford, Oxford, United Kingdom
REFINING THE RECORD OF PRECAMBRIAN REDOX CONDITIONS USING THE 238U/235U PROXY IN MARINE CARBONATES. (466464)
Xi Chen, University of Chicago, Origins Laboratory, Department of the Geophysical Sciences and Enrico Fermi Institute, Chicago, United States, Francois Tissot, Massachusetts Institute of Technology, Earth, Atmospheric & Planetary Sciences, Cambridge, MA, United States; California Institute of Technology, Isotoparium, Pasadena, United States, Andrey Bekker, University of California Riverside, Earth and Planetary Sciences, Riverside, United States, Galen P Halverson, McGill University, Montreal, QC, Canada, Jan Veizer, University of Ottawa, Ottawa, Canada and Nicolas Dauphas, University of Chicago, Origins Laboratory, Department of the Geophysical Sciences and Enrico Fermi Institute, Chicago, IL, United States
Ratio of redox sensitive trace elements in fluid inclusions in Permian halite – a possible paleo-redox indicator (375126)
Eszter Sendula1, Benjamin C Gill2, J Donald Rimstidt2, Tim K Lowenstein3, Javier García-Veigas4 and Robert J Bodnar5, (1)Virginia Polytechnic Institute and State University, Department of Geosciences, Blacksburg, VA, United States, (2)Virginia Polytechnic Institute and State University, Blacksburg, VA, United States, (3)Binghamton University, Department of Earth Sciences, Binghamton, United States, (4)Universitat de Barcelona, Barcelona, Spain, (5)Virginia Tech, Blacksburg, VA, United States
Trace Element Evidence from the 2.4 Ga Hotazel Fe-Mn Formation, South Africa, Constrains Marine Redox Conditions at the Onset of the Great Oxidation Event (446551)
Xolane Reginald Mhlanga1, Harilaos Tsikos1, Bridget K Lee2, Timothy W Lyons3 and Adrian Boyce4, (1)Rhodes University, Grahamstown, South Africa, (2)University of California Riverside, Riverside, CA, United States, (3)University of California Riverside, Department of Earth and Planetary Sciences, Riverside, United States, (4)Scottish Universities Environmental Research Center at the University of Glasgow, East Kilbride, United Kingdom
Dynamics of Benthic Iron Cycling and Sediment-Water Column Fluxes in Glacially Impacted Arctic Fjords (423558)
Lisa Herbert1, Qingzhi Zhu2, Natascha Riedinger3, Robert C Aller4, Bo Barker Jørgensen5, Alexander B Michaud5, Katja Laufer5 and Laura Wehrmann6, (1)Stony Brook University, Stony Brook, NY, United States, (2)Stony Brook University, School of Marine and Atmospheric Sciences, Stony Brook, NY, United States, (3)Oklahoma State University, Boone Pickens School of Geology, Stillwater, United States, (4)SUNY StonyBrook, Stony Brook, United States, (5)Aarhus University, Aarhus C, Denmark, (6)Stony Brook University, Stony Brook, United States
Theoretical study of the 238U/235U fractionation in natural systems (457172)
Alexander Sedlak, University of California Los Angeles, Earth, Planetary, and Space Sciences, Los Angeles, CA, United States and Edwin A Schauble, University of California Los Angeles, Earth, Planetary and Space Sciences, Los Angeles, CA, United States
Mongolian Saline Lakes: A Window into Uranium Partitioning in Sediments (414749)
Henry Churchill Churchill Henson, St. Olaf College, Northfield, MN, United States and Anne M Gothmann, St. Olaf College, Environmental Studies and Physics, Northfield, MN, United States
Trace Metal and Iron Cycling in Deep-Subsurface, Coal Bed-Containing Sediments off Shimokita (Japan) (446840)
Natascha Riedinger, Oklahoma State University Main Campus, Stillwater, OK, United States, Jeremy D Owens, Florida State University, Earth Ocean and Atmospheric Sciences, Tallahassee, FL, United States and William Gilhooly III, Indiana University Indianapolis, Department of Earth & Environmental Science, Indianapolis, United States

See more of: Paleoceanography and Paleoclimatology