CT24E:
Understanding Rare Earth Element (REE) Distributions and Isotopic Ratios and the Mechanisms Behind Their Use As Tracers of (Paleo)Oceanic Processes Posters

Session ID#: 84457

Session Description:
Analytical advances have enabled a significant increase of environmental REE abundance and isotopic (e.g. Nd, Ce) data. These elements are increasingly recognized as promising tracers for elucidating past and present natural and man-made processes in a variety of aquatic environments. However, in spite of this growth in observations, our understanding of the mechanisms, capabilities and limitations of geochemical proxies based on REE abundances and isotopic ratios remains incomplete. We therefore invite presentations of field, laboratory, or modeling studies of REEs and related isotope systems aimed specifically at exploring mechanistic connections between their geochemical behavior and observed distributions in marine and terrestrial waters and sediments. Of particular interest are investigations linking REE abundance distributions to Nd or Ce isotopic ratios; validating the use of REEs as proxies of paleoceanographic processes; and addressing REE fractionation and source-to-sink transport on a global scale and at "geochemical hotspots" like estuaries, hydrothermal vents, nepheloid layers etc. Presentations that merely contribute TEI distribution data will be given lower priority. We especially encourage submissions from students and early-career scientists.
Co-Sponsor(s):
  • CP - Coastal and Estuarine Processes
  • MG - Marine Geology and Sedimentology
  • OB - Ocean Biology and Biogeochemistry
Index Terms:

4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: CHEMICAL]
4808 Chemical tracers [OCEANOGRAPHY: CHEMICAL]
4825 Geochemistry [OCEANOGRAPHY: CHEMICAL]
4875 Trace elements [OCEANOGRAPHY: CHEMICAL]
Primary Chair:  Brian A Haley, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States
Co-chairs:  Torben Stichel, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, Johan Schijf, University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, Solomons, MD, United States and Vanessa Hatje, Universidade Federal da Bahia, Química Analítica - CIENAM, Salvador, Brazil
Primary Liaison:  Torben Stichel, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany
Moderators:  Torben Stichel, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany and Johan Schijf, University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, Solomons, MD, United States
Student Paper Review Liaisons:  Vanessa Hatje, Universidade Federal da Bahia, Química Analítica - CIENAM, Salvador, Brazil and Brian A Haley, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States

Abstracts Submitted to this Session:

 
Tracing the river-water versus waste-water sources of trace elements using rare earth elements in the Nakdong River estuarine waters (641282)
Taejin Kim1, Hayoung Kim2 and Guebuem Kim2, (1)Pukyong National University, Busan, South Korea, (2)Seoul National University, Seoul, South Korea
 
Rare Earth Elements input from proglacial sediments into Kongsfjorden, Svalbard (651817)
Torben Stichel1 and Susann Henkel1,2, (1)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (2)MARUM - University of Bremen, Bremen, Germany
 
Trace Element Sources and Fluxes in the Zonal Current System of the Western Tropical Pacific Ocean: Evidence From Combined Rare Earth Element, Nd Isotope Distributions and Physical Observations (Invited) (501104)
Melanie K. Behrens1, Katharina Pahnke1, Audrey Delpech2, Sophie E Cravatte2, Frederic Marin2 and Catherine Jeandel2, (1)Institute for Chemistry and Biology of the Marine Environment (ICBM), University of Oldenburg, Oldenburg, Germany, (2)LEGOS, Université de Toulouse, (IRD, CNES, CNRS, UPS), Toulouse, France
 
Simulation of global distribution of 231Pa and 230Th and its ratio in the ocean sediment by using an ocean general circulation model (642651)
Akira Oka, Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwa, Japan, Yusuke Sasaki, Atmosphere and Ocean Research Institute, University of Tokyo, Japan and Hidetaka Kobayashi, Atmosphere and Ocean Research Institute University of Tokyo, Tokyo, Japan
 
How important is the suspended particulate pool for controlling seawater rare earth element distributions? (651086)
Ed Hathorne, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany and Martin Frank, GEOMAR Helmholtz Center for Ocean Research Kiel, Kiel, Germany
 
Rare Earth Elements and Nd Isotopes as Tracers of Modern Ocean Circulation in the Central Mediterranean Sea (642970)
Ester Garcia-Solsona1, Leopoldo D Pena1, Eduardo Paredes1, José Noel Pérez-Asensio1, Lucía Quirós-Collazos2, Fabrizio Lirer3 and Isabel Cacho Lascorz1, (1)Universitat de Barcelona. Facultat de Ciencies de la Terra, Dinàmica de la Terra i de l'Oceà, Barcelona, Spain, (2)Institut de Ciències del Mar. CSIC., Biologia Marina i Oceanografia, Barcelona, Spain, (3)CNR-IAMC, Napoli, Italy
 
Short-term variability of dissolved rare earth elements and neodymium isotopes in the entire water column of the Panama Basin (654586)
Patricia Grasse, GEOMAR Helmholtz Centre for Ocean Research Kiel, German Centre for Integrative Biodiversity Research (iDiv), Kiel, Germany, Ed Hathorne, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, Katharina Pahnke, University of Oldenburg, Institute for Chemistry and Biology of the Marine Environment (ICBM), Germany, Philipp Böning, Institute for Chemistry and Biology of the Marine Environment (ICBM), Max-Planck Research Group for Marine Isotope Geochemistry, University of Oldenburg, Oldenburg, Germany and Martin Frank, GEOMAR Helmholtz Center for Ocean Research Kiel, Kiel, Germany
 
Complexation of Yttrium and the Rare Earth Elements with Silicate at Seawater Ionic Strength (494780)
Joshua Dalo, University of New England, Biddeford, ME, United States and Johan Schijf, University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, Solomons, MD, United States
 
Factors controlling distribution of Rare Earth Elements in Aragonitic Skeletons of Deep-Sea Scleractinian Corals explored with Laser Ablation Inductively Coupled Plasma Mass Spectrometry (655078)
Maria Prokopenko1, Mudit Murarka1, Austin Cordova1, Jess F Adkins2 and Laura Robinson3, (1)Pomona College, Claremont, CA, United States, (2)California Institute of Technology, Geological and Planetary Sciences, Pasadena, CA, United States, (3)University of Bristol, Bristol, United Kingdom
 
Speciation of Yttrium and the Rare Earth Elements in Seawater: Review of a 20-Year Analytical Journey (493057)
Johan Schijf, University of Maryland (UMCES CBL), Solomons, MD, United States and Robert Byrne, University of South Florida, College of Marine Science, St. Petersburg, FL, United States