DI14A:
Heterogeneity in Earth's Deep Interior: From Natural and Laboratory Observations to Theoretical Models III

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Session ID#: 16728

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:  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:

New Constraints on Mantle Heterogeneity from Reconciling Data from Abyssal Peridotites and MORB (Invited) (121331)
Charles H Langmuir, Harvard University, Earth and Planetary Sciences, Cambridge, MA, United States
Mix or un-mix? Trace element segregation from a heterogeneous mantle, simulated. (134203)
Richard F Katz1, Tobias Keller2, Jessica M Warren3 and Grace Manley2, (1)University of Oxford, Department of Earth Sciences, Oxford, United Kingdom, (2)University of Oxford, Oxford, United Kingdom, (3)University of Delaware, Earth Sciences, Newark, DE, United States
Recycling Revisited: Where did all the Subducted Sediments go? (164938)
Albrecht W Hofmann, Max Planck Institute for Chemistry, Mainz, Germany, Catherine Chauvel, Institut de Physique du Globe de Paris, Sorbonne Paris Cité, Université Paris Diderot, Paris, France, Eric Lewin, UJF-Grenoble 1 / CNRS-INSU, Institut des Sciences de la Terre (IsTERRE), Grenoble, France, Peter B Kelemen, Columbia University of New York, Palisades, NY, United States and Bradley R Hacker, University of California Santa Barbara, Department of Earth Science, Santa Barbara, CA, United States
Constraints on the origin of Os-isotope disequilibrium in included and interstitial sulfides in mantle peridotites: Implications for the interpretation of Os-isotope signatures in MORB and Abyssal Peridotites (186541)
John C Lassiter, University of Texas at Austin, Department of Earth and Planetary Sciences, Austin, United States
Investigation of Partial Melting in Planetary Interiors using Electrical Measurements (Invited) (161715)
Anne Pommier, University of California San Diego, La Jolla, CA, United States, Rob L Evans, Woods Hole Oceanographic Institution, Marine Geology and Geophysics, Woods Hole, MA, United States, Kurt D Leinenweber, Arizona State University, School of Molecular Sciences, Tempe, United States and David L Kohlstedt, University of Minnesota Twin Cities, Minneapolis, MN, United States
Effects of Size and Shape of Mantle Source on the Fractionation of Isotopes during Melting of a Heterogeneous Mantle: A Time-Dependent Study (135459)
Boda Liu and Yan Liang, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States
Geodynamic modeling of PKP precursors (158894)
Samuel McRae Haugland, University of Michigan Ann Arbor, Ann Arbor, MI, United States, Jeroen Ritsema, University of Michigan, Department of Earth and Environmental Sciences, Ann Arbor, MI, United States, Peter E van Keken, Carnegie Institution for Science Washington, Washington, DC, United States and Tarje Nissen-Meyer, University of Oxford, Department of Earth Sciences, Oxford, United Kingdom
Using the heterogeneity distribution in Earth's mantle to study structure and flow (Invited) (121890)
Sebastian Rost, University of Leeds, School of Earth and Environment, Leeds, LS2, United Kingdom, Daniel Andrew Frost, University of California Berkeley, Berkeley Seismological Laboratory, Berkeley, United States and Hannah L Bentham, University of Leeds, School of Earth and Environment, Leeds, United Kingdom

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