U005
Emergent views of the Earth’s deep interior
Session ID#: 81835
Session Description:
Increased synergy between seismology, geodynamics, and mineral physics is providing new insights on Earth’s remote interior. Seismology has contributed sharper images of plumes by adjoint tomography and constraints on deep mantle buoyancy from tidal tomography facilitating the development of mineralogical/dynamic scenarios of the mantle. Geodynamics has incorporated pressure/temperature dependent mineral properties, including spin transition effects, as well as the effect of large scale rheological/chemical heterogeneities on mantle dynamics/evolution. Mineral physics has contributed discoveries of hydrous phases stable to core-mantle boundary pressures, novel magnesium free and iron-rich perovskites with variable oxidation states stable at lower mantle conditions, refined ab initio predictions of spin transition effects on seismic observables, and melting phase relations in mantle silicates and core iron alloys at relevant pressures that challenge deep-seated notions of the deep Earth’ state. This session will present emergent views of the Earth’s deep interior resulting from all this progress and their integration.
Index Terms:
0545 Modeling [COMPUTATIONAL GEOPHYSICS]
3621 Mantle processes [MINERALOGY AND PETROLOGY]
3919 Equations of state [MINERAL PHYSICS]
7203 Body waves [SEISMOLOGY]
Primary Convener: Renata Wentzcovitch, Columbia University of New York, Lamont-Doherty Earth Observatory, Earth and Environmental Sciences, Applied Physics and Applied Mathematics Department, Palisades, NY, United States
Conveners: Jeroen Tromp, Princeton University, Princeton, NJ, United States, Kei Hirose, Tokyo Inst Tech, Tokyo, Japan and Paul Tackley, ETH Zurich, Department of Earth Sciences,, Zurich, Switzerland
Primary Liaison: Renata Wentzcovitch, Columbia University of New York, Lamont-Doherty Earth Observatory, Earth and Environmental Sciences, Applied Physics and Applied Mathematics Department, Palisades, NY, United States
Emerging Views of Earth's Core - an E′ Layer at the Top of the Outer Core? (Invited) (490820)
Jessica C E Irving, Princeton University, Department of Geosciences, Princeton, NJ, United States, Sanne Cottaar, University of Cambridge, Department of Earth Sciences, Cambridge, United Kingdom, Vedran Lekic, University of Maryland, Department of Geology, College Park, MD, United States and Wenbo Wu, CalTech Seismological Laboratory, Pasadena, United States
Relating Deep Earth Structures to Geochemical Data (Invited) (503167)
Richard J Walker, University of Maryland College Park, Department of Geology, College Park, MD, United States, Andrea Mundl-Petermeier, University of Vienna, Vienna, Austria, Rebecca A. Fischer, Harvard University, Cambridge, MA, United States, Vedran Lekic, University of Maryland, 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, Woods Hole, MA, United States and Mary Horan, Carnegie Inst Washington, Department of Terrestrial Magnetism, Washington, DC, United States
Mantle heterogeneity in terrestrial planets: Formation, mixing, and segregation through time (Invited) (507022)
Maxim Ballmer, ETH Zurich, Inst. Geophysics, Zurich, Switzerland; University College London, Dept. Earth Sciences, London, United Kingdom, Jun Yan, ETH Zurich, Institute of Geophysics, Zurich, Switzerland, Anna J. P. Gülcher, ETH Swiss Federal Institute of Technology Zurich, Zürich, Switzerland and David Gebhardt, ETH Zurich, Zurich, Switzerland
Mapping mantle heterogeneities through redox state (Invited) (513481)
Kanani K M Lee1,2, Neala Creasy3, Jennifer Girard3, Vasilije Dobrosavljevic4,5, Tingting Gu3,6, Catherine A McCammon7 and Mingming Li8, (1)Yale University, Department of Geology & Geophysics, New Haven, CT, United States, (2)Lawrence Livermore National Laboratory, Physics, Livermore, CA, United States, (3)Yale University, New Haven, CT, United States, (4)California Institute of Technology, Seismological Laboratory, Pasadena, CA, United States, (5)Yale University, Geology & Geophysics, New Haven, CA, United States, (6)Gemological Institute of America, Carlsbad, CA, United States, (7)University of Bayreuth, Bayerisches Geoinstitut, Bayreuth, Germany, (8)Arizona State University, School of Earth and Space Exploration, Tempe, AZ, United States
Earth’s Bulk Structure and Heterogeneity from Big Data and Full-Spectrum Tomography (Invited) (516747)
Pritwiraj Moulik, University of Maryland College Park, Department of Geology, College Park, MD, United States, Vedran Lekic, University of Maryland, Department of Geology, College Park, MD, United States, Goran Ekstrom, Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States and Barbara A Romanowicz, Univ California Berkeley, Berkeley, CA, United States
Detection of an Iron Spin Transition in Ferro-periclase in the Lower Mantle (Invited) (537304)
John W Hernlund1, Grace E Shephard2, Christine T Houser1, Renata Wentzcovitch3 and Reidar G Tronnes4, (1)Earth-Life Science Institute, Meguro, Tokyo, Japan, (2)University of Oslo, Centre for Earth Evolution and Dynamics (CEED), Oslo, Norway, (3)Columbia University in the City of New York, Department of Applied Physics and Applied Mathematics, New York, NY, United States, (4)University of Oslo, Centre for Earth Evolution and Dynamics, Oslo, Norway
Geophysical and geochemical models help constrain the relative importance of oceanic and continental crust recycling (Invited) (550178)
Peter E van Keken1, Timothy D Jones2, Rosie Jones3, Nathan Sime4, Jonathan Tucker5, Ross Maguire6, Jeroen Ritsema7 and Chris J Ballentine3, (1)Carnegie Institution for Science, Department of Terrestrial Magnetism, Washington, DC, United States, (2)Carnegie Institution for Science Washington, Washington, United States, (3)University of Oxford, Department of Earth Sciences, Oxford, United Kingdom, (4)Carnegie Institution for Science Washington, Department of Terrestrial Magnetism, Washington, United States, (5)Carnegie Institution for Science, Department of Terrestrial Magnetism, Washington, MA, United States, (6)University of New Mexico Main Campus, Albuquerque, MI, United States, (7)Univ Michigan, Ann Arbor, MI, United States
Transfer of SiO2 from the core to the mantle and its fate in the Earth in early and present times (Invited) (567374)
George R Helffrich1, Maxim Ballmer2, Guillaume Morard3, Koichiro Umemoto1, Ryuichi Nomura4, Ryosuke Sinmyo5, Anat Shahar6, Stephane Labrosse7, John W Hernlund8 and Kei Hirose9, (1)Tokyo Institute of Technology, Earth-Life Science Institute, Tokyo, Japan, (2)ETH Zürich, Department of Earth Sciences, Zürich, Switzerland, (3)Sorbonne Université - MNHN - CNRS - IMPMC, Paris, France, (4)Kyoto University, Kyoto, Japan, (5)University of Bayreuth, Bayreuth, Germany, (6)Carnegie Institution of Washington, Geophysical Laboratory, Washington, DC, United States, (7)Ecole Normale Supérieure Lyon, Lyon, France, (8)Earth-Life Science Institute, Meguro, Tokyo, Japan, (9)Tokyo Inst Tech, Tokyo, Japan
