V31D:
A Multidisciplinary Approach to Investigating the Formation of Earth and Its Chemically Distinct Reservoirs Posters


Submit an Abstract to this Session


Session ID#: 45356

Session Description:
The composition of Earth’s building blocks and the processes by which its interior and crust have evolved exert fundamental controls on the geodynamic and geochemical evolution of the planet. While recent analytical developments have led to high-precision isotope analyses that are revolutionizing our understanding of these processes, identifying Earth’s precursors and unraveling how its poorly-mixed interior developed remain unclear. Related processes include main-stage accretion, the Moon-forming event, core segregation, mantle crystallization and overturn, late accretion, and crust formation/destruction. This session calls on studies that focus on deciphering Earth’s accretionary history and long-term crust-mantle evolution. In particular, research that integrates cutting-edge isotope ratio analyses (stable or radiogenic) of cosmo- or geo-chemical materials, with geodynamical modelling, seismology, or experimental petrology.
Primary Convener:  Katherine R Bermingham, University of Maryland College Park, Department of Geology, College Park, United States
Convener:  Jesse Ray Reimink, Carnegie Institution for Science, DTM, Washington, DC, United States
Primary Liaison:  Katherine R Bermingham, University of Maryland College Park, Department of Geology, College Park, United States
Chairs:  Katherine R Bermingham, University of Maryland College Park, Department of Geology, College Park, United States and Jesse Ray Reimink, Carnegie Institution for Science, Department of Terrestrial Magnetism, Washington, United States
OSPA Liaison:  Jesse Ray Reimink, Carnegie Institution for Science, Department of Terrestrial Magnetism, Washington, United States

Cross-Listed:
  • DI - Study of the Earth's Deep Interior
  • MR - Mineral and Rock Physics
  • P - Planetary Sciences
Index Terms:

1009 Geochemical modeling [GEOCHEMISTRY]
1025 Composition of the mantle [GEOCHEMISTRY]
1040 Radiogenic isotope geochemistry [GEOCHEMISTRY]
1041 Stable isotope geochemistry [GEOCHEMISTRY]

Abstracts Submitted to this Session:

Iron isotope fractionation during Earth's core-mantle segregation (425090)
Tian Qin, University of Minnesota, Twin Cities, Minneapolis, MN, United States, Michel Lacerda Marcondes, Lamont -Doherty Earth Observatory, Palisades, NY, United States, Gaurav Shukla, Bennett University, School of Engineering and Applied Sciences, Greater Noida, India and Renata Wentzcovitch, Columbia University in the City of New York, Lamont-Doherty Earth Observatory, Earth and Environmental Sciences, Department of Applied Physics and Applied Mathematics, Palisades, NY, United States
A framework for efficient chemical separation of tungsten and other trace elements using organic acids for high-precision mass spectrometry (450901)
Bradley James Peters, Carnegie Institution for Science Washington, Washington, DC, United States, Andrea Mundl-Petermeier, University of Maryland College Park, Department of Geology, College Park, United States, Mary Horan, Carnegie Inst Washington, Department of Terrestrial Magnetism, Washington, DC, United States, Richard Carlson, Carnegie Inst Washington, Earth and Planets Laboratory, Washington, United States and Richard J Walker, University of Maryland College Park, Department of Geology, College Park, MD, United States
A global picture on correlating primordial mantle signatures in Ocean Island basalts (359947)
Andrea Mundl-Petermeier, University of Maryland College Park, Department of Geology, College Park, United States, Richard J Walker, University of Maryland College Park, Department of Geology, College Park, MD, United States, Matthew G Jackson, University of California Santa Barbara, Earth Science, Santa Barbara, CA, United States, Mark D Kurz, WHOI, Department of Marine Chemistry & Geochemistry, Woods Hole, United States and Saemundur A Halldorsson, University of Iceland, NordVulk, Institute of Earth Sciences, Reykjavik, Iceland
Isotopic Anomalies in Short-lived Systems: The Plot Thickens (380765)
Richard J Walker, University of Maryland College Park, Department of Geology, College Park, MD, United States, Andrea Mundl-Petermeier, University of Maryland College Park, Department of Geology, College Park, United States and Mary Horan, Carnegie Inst Washington, Department of Terrestrial Magnetism, Washington, DC, United States
Constraining the Composition of Terrestrial Building Blocks: The Molybdenum Isotopic Composition of the Earth’s Mantle (392731)
Katherine R Bermingham, University of Maryland College Park, Department of Geology, College Park, United States and Richard J Walker, University of Maryland College Park, Department of Geology, College Park, MD, United States
Mantle Sulfur Cycle: A Case for Non-Steady State ? (432847)
Pierre Cartigny, Institut de Physique du Globe de Paris, Paris, France and Jabrane Labidi, University of California, Los Angeles, Eath, Planetary, and Space Sciences, Los Angeles, CA, United States
Early Cretaceous ridge subduction beneath southern Alaska: Insights from zircon U–Pb geochronology, hafnium and oxygen isotopic composition of the Western Chugach Tonalite-Trondhjemite Suite (375446)
Munazzam Ali Mahar1, Terry L Pavlis1, John R Bowman2, Philip Goodell1 and Walter K Conrad3, (1)University of Texas at El Paso, El Paso, TX, United States, (2)University of Utah, Department of Geology and Geophysics, Salt Lake City, United States, (3)Knight Piésold and Co, Denver, CO, United States
Effect of thickness of lithosphere on 3He/4He isotopic composition of OIB (429091)
Gen Shimoda, Geological Survey of Japan, Tsukuba, Japan and Tetsu Kogiso, Kyoto University, Kyoto, Japan

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