DI015
Toward an Interdisciplinary Understanding on the Structure, Composition, and Dynamic Evolution of the Lower Mantle
Session ID#: 160010
Session Description:
Earth’s lower mantle regulates heat and material fluxes between the surface and the core. The chemistry and physics of this region play an important role in controlling processes like Earth’s early differentiation into the mantle and core, evolution of geochemical reservoirs, fates of subducting slabs and rising plumes, and deep rock/volatile cycling. However, many questions remain about the long-term evolution of the lower mantle and its present-day thermochemical structures, such as large low velocity provinces, ultra-low velocity zones, and regions of seismic anisotropy. Recent advances and future breakthroughs on understanding the lower mantle critically depend on the integration of different fields. In this session, we invite contributions from geophysical explorations, geodynamic modeling, geochemistry, mineral-physics experimental and theoretical studies, as well as multidisciplinary approaches, to provide a platform for interdisciplinary interactions, and thus to advance our understanding of the thermal and chemical status of Earth’s deep interior.
Index Terms:
1025 Composition of the mantle [GEOCHEMISTRY]
1038 Mantle processes [GEOCHEMISTRY]
3924 High-pressure behavior [MINERAL PHYSICS]
7208 Mantle [SEISMOLOGY]
Primary Convener: Suyu Fu, The University of Tokyo, Tokyo, Japan
Conveners: Neala Creasy, Colorado School of Mines, Golden, CO, United States, Vasilije V Dobrosavljevic, Florida State University, National High Magnetic Field Laboratory - NHMFL, Tallahassee, FL, United States and Anna J. P. Gülcher, ETH Swiss Federal Institute of Technology Zurich, Zürich, Switzerland
Student/Early Career Convener: Jyotirmoy Paul, Jadavpur University, Kolkata, India
Dispersion of Core Diffracted Waves Caused by ULVZs (1059563)
Carl Martin1, Barbara A Romanowicz2 and Sanne Cottaar1, (1)University of Cambridge, Department of Earth Sciences, Cambridge, United Kingdom, (2)Univ California Berkeley, Berkeley, CA, United States
Simultaneous Pressure-Temperature Induced Phase Transition of Goethite (α-FeOOH to ε-FeOOH) investigated by Raman spectroscopy (1063283)
Shanece Esdaille, Florida International University, Center for the Study of Matter at Extreme Conditions, Miami, FL, United States and Jiuhua Chen, Center for Study of Matter at Extreme Conditions, Mechanical and Materials Engineering, Miami, FL, United States
Changing Patterns in Core-Mantle Boundary Heat Flux Throughout the Past Billion Years of Earth's History (1073309)
Frederick S Lacombe1, Juliane Dannberg1, Rene Gassmoeller1, Courtney Jean Sprain2 and Daniele Thallner3, (1)University of Florida, Department of Geological Sciences, Gainesville, United States, (2)Berkeley Geochronology Center, Berkeley, United States, (3)University of Liverpool, Liverpool, L69, United Kingdom
Partitioning of heat-producing elements and iron valence distribution between a deep pyrolitic magma ocean and its first solid cumulates (1076658)
Héloïse Gendre1, James Badro1, Hui Chen2, Stephan Borensztajn1, Cécile Hébert2 and Duncan Alexander2, (1)Institut de Physique du Globe de Paris, Paris, France, (2)Swiss Federal Institute of Technology Lausanne, Lausanne, Switzerland
Assessing the lateral refraction of lower mantle heterogeneities from multi-component ring laser observations (1077457)
Zhi Li1, Shihao Yuan2, Sanne Cottaar3, Xiaodong Song1, Joachim Wassermann2 and Heiner Igel2, (1)SinoProbe Laboraory, School of Earth and Space Sciences, Peking University, Beijing, China, (2)Ludwig Maximilians University of Munich, Munich, Germany, (3)University of Cambridge, Department of Earth Sciences, Cambridge, United Kingdom
A self-protection mechanism by the hydration reduced thermal conductivity of hydrous minerals (1084214)
Wen-Pin Hsieh1, Enrico Marzotto2, Takayuki Ishii3, Leonid S Dubrovinsky4, Alena Aslandukova5, Giacomo Criniti4, Yi-Chi Tsao6, Chun-Hung Lin6, Jun Tsuchiya7 and Eiji Ohtani8, (1)Institute of Earth Sciences Academia Sinica, Taipei, Taiwan, (2)Bayerisches Geoinstitut, Universitӓt Bayreuth, Bayreuth, Germany, (3)Center for High Pressure Science and Technology Advanced Research, Beijing, China, (4)University of Bayreuth, Bayerisches Geoinstitut, Bayreuth, Germany, (5)Bayerisches Geoinstitut, University of Bayreuth, Bayreuth, Germany, (6)Academia Sinica, Taipei, Taiwan, (7)Ehime University, Geodynamics Research Center, Matsuyama, Ehime, Japan, (8)Tohoku University, Sendai, Japan
The core-mantle boundary illuminated by PKKP diffracted waves (1112718)
Stuart Russell1, Jessica C E Irving2 and Sanne Cottaar1, (1)University of Cambridge, Department of Earth Sciences, Cambridge, United Kingdom, (2)University of Bristol, School of Earth Sciences, Bristol, BS8, United Kingdom
Weak Cubic CaSiO3 Perovskite in Earth’s Mantle (Invited) (1116764)
Hauke Marquardt1, Julia Immoor2, Hans-Peter Liermann3, Sergio Speziale4, Kirsten Schulze2, Johannes Buchen2 and Alexander Kurnosov5, (1)University of Oxford, Department of Earth Sciences, Oxford, United Kingdom, (2)Bayerisches Geoinstitut, Universitaet Bayreuth, Bayreuth, Germany, (3)DESY Deutsches Elektronen Synchrotron, Hamburg, Germany, (4)Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany, (5)University of Bayreuth, Bayerisches Geoinstitut, Bayreuth, Germany
Hydrogen Bonding and Spin State of (Al,Fe)-bearing Phase H at High Pressure (1128795)
Benjamin Strozewski1, Johannes Buchen1, Wolfgang Sturhahn2, Takayuki Ishii3, Itaru Ohira4, Stella Chariton5, Zhenxian Liu6, Barbara Lavina5,7, Jiyong Zhao8, Thomas Toellner8 and Jennifer M Jackson1, (1)California Institute of Technology, Seismological Laboratory, Pasadena, United States, (2)California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, United States, (3)University of Bayreuth, Bayerisches Geoinstitut, Bayreuth, Germany, (4)Tohoku University, Department of Earth Science, Sendai, Japan, (5)University of Chicago, Center for Advanced Radiation Sources, Chicago, United States, (6)University of Illinois Chicago, Department of Physics, Chicago, United States, (7)Argonne National Laboratory, Advanced Photon Source, Chicago, United States, (8)Argonne National Laboratory, Advanced Photon Source, Lemont, United States
Structure and Compressibility of Ti-bearing Davemaoite: New Insight to Seismic Heterogeneity of the Deep Mantle (1135276)
Keng-Hsien Chao1, Bin Chen2, Robert P Rapp1, Dongzhou Zhang2,3, Jingui Xu2,3, Stella Chariton3 and Vitali Prakapenka3, (1)University of Hawaii at Manoa, Hawaii Institute of Geophysics and Planetology, Honolulu, HI, United States, (2)University of Hawaii at Manoa, Hawaii Institute of Geophysics and Planetology, Honolulu, United States, (3)University of Chicago, Center for Advanced Radiation Sources, Chicago, United States
Compositional and Thermal State of the Lower Mantle from Joint 3D Inversion with Seismic tomography and Mineral Elasticity (1148629)
Xin Deng1, Yinhan Yu2, Shangqin Hao1,3, Youyi Ruan4, Yajie Zhao1, Wenzhong Wang1, Sidao Ni5 and Zhongqing Wu1, (1)University of Science and Technology of China, School of Earth and Space Sciences, Hefei, China, (2)University of Science and Technology of China, Hefei, China, (3)University of California San Diego, La Jolla, CA, United States, (4)Nanjing University, School of Earth Science and Engineering, Nanjing, China, (5)Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, China
Investigating the Disproportionation of Iron in the Lower Mantle (1178896)
Kellie Swadba1, Catherine A. Macris2, Barbara Lavina3 and Andrew Campbell1, (1)University of Chicago, Chicago, IL, United States, (2)Indiana University Purdue University Indianapolis, Indianapolis, IN, United States, (3)X-ray Sciences Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL, United States
Linking kimberlite eruptions to the dynamic evolution of the lower mantle (1192147)
Ömer Faruk Bodur, University of Wollongong, GeoQuEST Research Centre, School of Earth and Environmental Sciences, University of Wollongong; Wollongong, NSW 2522 Australia, Wollongong, NSW, Australia and Nicolas E Flament, University of Wollongong, School of Earth, Life and Atmospheric Sciences, Wollongong, NSW, Australia
