DI13B:
Heterogeneity in Earth's Deep Interior: From Natural and Laboratory Observations to Theoretical Models II

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Session ID#: 16723

Session Description:
Geochemistry plays an important role in our understanding of Earth’s accretion, its differentiation, and the formation of the atmosphere. Combining natural and laboratory measurements with geophysical observations and geodynamic models of mantle convection will position us to make major breakthroughs in our understanding of Earth’s formation and subsequent evolution. This session encourages abstract submissions dealing with e.g., [1] the relationship between the geochemistry of mid-ocean ridge and ocean island basalts and seismically observed features in the mantle, [2] the geochemistry of mantle end-members and how they relate to the origin and distribution of chemical variability in the deep mantle, and [3] whether the formation and preservation of ancient, chemically distinct components in the Earth’s deep interior is compatible with a dynamically convecting mantle. Study of the deep Earth is inherently multidisciplinary, and we encourage abstract submissions from all realms of the geosciences (e.g., petrology and geochemistry, geophysics, mineral physics, geodynamics).
Primary Convener:  Curtis D Williams, University of California Davis, Department of Earth and Planetary Sciences, Davis, CA, United States
Conveners:  Matthew G Jackson, University of California Santa Barbara, Earth Science, Santa Barbara, CA, United States, Elizabeth Cottrell, Smithsonian, NMNH, Department of Mineral Sciences, Washington, DC, United States and Pilar Madrigal, Virginia Polytechnical Institute and State University, Department of Geosciences, Blacksburg, VA, United States
Chairs:  Elizabeth Cottrell, Smithsonian, NMNH, Department of Mineral Sciences, Washington, DC, United States, Curtis D Williams, University of California Davis, Department of Earth and Planetary Sciences, Davis, CA, United States, Matthew G Jackson, University of California Santa Barbara, Earth Science, Santa Barbara, CA, United States and Pilar Madrigal, Virginia Polytechnical Institute and State University, Department of Geosciences, Blacksburg, VA, United States
OSPA Liaison:  Curtis D Williams, University of California Davis, Department of Earth and Planetary Sciences, Davis, CA, United States
Index Terms:

1038 Mantle processes [GEOCHEMISTRY]

Abstracts Submitted to this Session:

EVIDENCE FOR PRIMORDIAL WATER IN EARTHS DEEP MANTLE: D/H RATIOS IN BAFFIN ISLAND AND ICELANDIC PICRITES (Invited) (147737)
Lydia jane Hallis1, Gary R Huss2, Kazuhide Nagashima2, Jeffrey Taylor2, David R Hilton3, Michael J Mottl2, Karen Jean Meech4 and Saemundur A Halldorsson5, (1)University of Glasgow, Glasgow, United Kingdom, (2)University of Hawaii NASA Astrobiology Institute, Hawai’i Institute of Geophysics and Planetology, Honolulu, HI, United States, (3)University of California San Diego, Earth Sciences, La Jolla, CA, United States, (4)Institute for Astronomy, Honolulu, HI, United States, (5)University of Iceland, Reykjavik, Iceland
182W in Modern Ocean Island Basalts (179641)
Andrea Mundl-Petermeier, University of Maryland College Park, Department of Geology, College Park, United States, Mathieu Touboul, Ecole Normale Supérieure Lyon, Lyon, France, Richard J Walker, University of Maryland College Park, College Park, MD, United States, Matthew G Jackson, University of California Santa Barbara, Earth Science, Santa Barbara, CA, United States, Mark D Kurz, Woods Hole Oceanographic Institution, Department of Marine Chemistry & Geochemistry, Woods Hole, MA, United States, James M Day, University of California San Diego, La Jolla, United States, Mary F Horan, Carnegie Institution for Science Washington, Washington, DC, United States and Rosalind L Helz, USGS, Reston, VA, UNITED STATES
142Nd/144Nd Heterogeneity in the Proterozoic to Phanerozoic Mantle and Implications for Mantle Mixing (185506)
Eugenia Hyung, Harvard University, Earth and Planetary Sciences, Cambridge, United States and Stein B Jacobsen, Harvard University, Earth and Planetary Sciences, Cambridge, MA, United States
Variations in Fe and S redox states in ocean island basalts (178409)
Maryjo N Brounce1, Mary E Peterson2, Edward M Stolper1 and John M Eiler1, (1)California Institute of Technology, Pasadena, CA, United States, (2)University of New Hampshire Main Campus, Durham, NH, United States
Controls on the time-scales of mantle mixing (176955)
Fabio Crameri, University of Oslo, Centre for Earth Evolution and Dynamics (CEED), Oslo, Norway, Neil Cagney, University College London, London, United Kingdom, Carolina R Lithgow-Bertelloni, University of California Los Angeles, Department of Earth, Planetary, and Space Sciences, Los Angeles, CA, United States and John A Whitehead, Woods Hole Oceanographic Institution, Department of Physical Oceanography, Woods Hole, MA, United States
Archean recycled oceanic crust sampled in Azores lavas (148572)
Paul Beguelin, Westfälische Wilhelms-Universität Münster, Institut für Mineralogie, Münster, Germany, Michael Bizimis, University of South Carolina Columbia, School of Earth Ocean and Environment, Columbia, SC, United States, Christoph Beier, GeoZentrum Nordbayern, Erlangen, Germany and Simon Turner, Macquarie University, School of Natural Sciences, Sydney, Australia
Iron isotope contraints on mantle lithological heterogeneity beneath the Azores (144647)
Helen M. Williams, University of Cambridge, Cambridge, United Kingdom, Simon Turner, Macquarie University, School of Natural Sciences, Sydney, Australia, Munir Humayun, Florida State University, Dept. of EOAS & National High Magnetic Field Laboratory, Tallahassee, FL, United States, Elisabeth Widom, Miami University Oxford, Oxford, OH, United States and Marc-Alban Millet, Cardiff University, Cardiff, United Kingdom
Linking Isotope Variations in OIB and Deep Mantle Structure: the Counter-Example of Society Islands, French Polynesia (137855)
Carole Cordier, ISTerre Institute of Earth Sciences, Saint Martin d'Hères, France, Catherine Chauvel, Institut de Physique du Globe de Paris, Sorbonne Paris Cité, Université Paris Diderot, Paris, France and Christophe Hemond, Geo-Ocean UMR6538, CNRS-Ifremer-UBO-UBS, Plouzané, France

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