DI33A:
A Multidisciplinary View of Mantle Heterogeneity: Linking Earth’s Chemical, Physical, and Dynamical Evolution I


Submit an Abstract to this Session


Session ID#: 60318

Session Description:
Advances in geophysical modeling of Earth’s mantle reveal in increasing detail its heterogeneous, three-dimensional structure. Mineral physics allows this heterogeneous structure to be interpreted in terms of compositional or thermal anomalies that deviate from an ambient mantle. Geochemical analyses of mantle-derived samples provide additional evidence for a compositionally heterogeneous mantle and, in some cases, its temporal history. The heterogeneous nature of the mantle as characterized by these disparate (yet inter-related) datasets is ultimately controlled by the dynamical evolution of our planet, however, details surrounding the nature of these heterogeneities remain debated.

This session will explore mantle heterogeneities in a multi-disciplinary perspective from the uppermost mantle to the core-mantle-boundary. This includes observational, experimental, theoretical, and numerical approaches that investigate links between the physics and chemistry of Earth’s interior. We also encourage abstracts that use novel data collection and visualization techniques to further understand the structure and dynamics of Earth’s mantle.

Primary Convener:  Curtis D Williams, University of California Davis, Department of Earth and Planetary Sciences, Davis, CA, United States
Conveners:  Jin Zhang, University of New Mexico Main Campus, Albuquerque, United States, Ebru Bozdag, Colorado School of Mines, Department of Applied Mathematics & Statistics and Department of Geophysics, Golden, CO, United States and Jiashun Hu, Southern University of Science and Technology, Department of Earth and Space Sciences, Shenzhen, China
Primary Liaison:  Curtis D Williams, University of California Davis, Department of Earth and Planetary Sciences, Davis, CA, United States
Chairs:  Ebru Bozdag, Colorado School of Mines, Department of Applied Mathematics & Statistics and Department of Geophysics, Golden, CO, United States and Curtis D Williams, University of California Davis, Earth and Planetary Sciences, Davis, CA, United States
OSPA Liaison:  Curtis D Williams, University of California Davis, Earth and Planetary Sciences, Davis, CA, United States

Cross-Listed:
  • MR - Mineral and Rock Physics
  • S - Seismology
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

1025 Composition of the mantle [GEOCHEMISTRY]
3621 Mantle processes [MINERALOGY AND PETROLOGY]
7208 Mantle [SEISMOLOGY]
8124 Earth's interior: composition and state [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Tomographic proxies for the presence of post-perovskite in the lowermost mantle (Invited) (350648)
Paula Koelemeijer1,2, Ana Pagu2, Bernhard S. A. Schuberth3 and Rhodri Davies4, (1)University College London, Department of Earth Sciences, London, United Kingdom, (2)University of Oxford, Department of Earth Sciences, Oxford, United Kingdom, (3)Ludwig-Maximilian-Universität, München, Department of Earth and Environmental Sciences, Munich, Germany, (4)Australian National University, Research School of Earth Sciences, Canberra, Australia
Can compositional mantle heterogeneities be detected with seismic anisotropy? (374579)
Manuele Faccenda, University of Padua, Padua, Italy, Ana MG Ferreira, University College London, Department of Earth Science, London, United Kingdom, Nicola Tisato, University of Texas at Austin, Austin, TX, United States, Carolina R Lithgow-Bertelloni, University of California Los Angeles, Department of Earth, Planetary, and Space Sciences, Los Angeles, CA, United States, Lars P Stixrude, University of California Los Angeles, Department of Earth, Planetary and Space Sciences, Los Angeles, CA, United States and Giorgio Pennacchioni, University of Padova, Department of Geosciences, Padova, Italy
Examining the Role of Chemical Heterogeneity on the Deep Mantle Seismic Signature Using 3D Thermo-chemical Mantle Modelling (430985)
John Huw Davies, Cardiff University, School of Earth and Ocean Sciences, Cardiff, CF24, United Kingdom and Matthew Price, Cardiff University, School of Earth and Ocean Sciences, Cardiff, United Kingdom
Global observability of the 410 and 660 km discontinuities: implications for mantle mineralogy (352955)
Lauren Waszek, Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia; New Mexico State University, Las Cruces, United States, Benoit Tauzin, Université Claude Bernard Lyon 1, Ecole Normale Supérieure de Lyon, Université Jean Monnet, Centre National de la Recherche Scientifique, Laboratoire de Géologie de Lyon: Terre, Planètes, Environnement, Villeurbanne, France, Nicholas C Schmerr, University of Maryland College Park, Department of Geology, College Park, MD, United States and Maxim Ballmer, University College London, ETH Zürich, London, United Kingdom
Heterogeneity spectrum of Earth's upper mantle obtained from the coherence of teleseismic P waves: Evidence for pervasive chemical and phase heterogeneity (343429)
Vernon F Cormier, University of Connecticut, Groton, CT, United States, Yiteng Tian, University of Connecticut, Physics, Storrs, CT, United States and Yingcai Zheng, University of Houston, Earth and Atmospheric Sciences, Houston, TX, United States
REM-3D Reference Datasets: Reconciling large compilations of normal mode, body and surface wave observations (455995)
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, United States and Barbara A Romanowicz, University of California Berkeley, Department of Earth and Planetary Science, Berkeley, United States
Water-mediated iron oxides in the Earth’s lower mantle (Invited) (341633)
Jin Liu1,2, Qingyang Hu1, Wenli Bi3, Liuxiang Yang4, Yuming Xiao5, Paul Chow6, Ho-kwang Mao7 and Wendy L Mao8, (1)Center for High Pressure Science & Technology Advanced Research, Beijing, China, (2)Yanshan University, Qinhuangdao, China, (3)Argonne National Laboratory, Argonne, IL, United States, (4)Carnegie Inst-HPSynC, Argonne, IL, United States, (5)Argonne National Laboratory, X ray Science division, Argonne, United States, (6)HPCAT of Geophysical Laboratory, Chicago, United States, (7)Center for High Pressure Science & Technology Advanced Research, Shanghai, China, (8)Stanford-Geological & Env Sci, Stanford, CA, United States
Tungsten Isotopes in Mantle Plumes: Heads it's Positive, Tails it's Negative (Invited) (363180)
Timothy D Jones, Carnegie Institution for Science Washington, Washington, United States, Rhodri Davies, Australian National University, Research School of Earth Sciences, Canberra, Australia and Paolo Sossi, Institut de Physique du Globe de Paris, Paris, France

See more of: Study of Earth's Deep Interior