DI11B:
Consequences of Mantle Phase Transitions I

Submit an Abstract to this Session



Session ID#: 32037

Session Description:
This session focuses on phase transformations of mantle materials at high pressure-temperature conditions and their seismic and dynamic manifestations in the Earth’s interior. The recent developments in seismic methods, as well as the blooming of seismic data from expanded seismic networks, continuously improve the imaging of global and regional phase transitions and seismic structure in their vicinity which can reveal local dynamics. Improving mineral physics constraints on the elastic properties, partitioning behavior, phase stability, and transformations in the major mantle minerals enable interpretation of seismic observations in terms of changes in mineral structure, spin state of iron, and distribution of volatiles such as water. We aim to bring together contributions from mineral physics, dynamics, and seismology that inform and improve our understanding of mantle phase transitions.

Primary Convener:  Christine T Houser, Earth-Life Science Institute, Meguro, Tokyo, Japan
Conveners:  Jin Zhang, University of New Mexico Main Campus, Albuquerque, United States; Texas A & M University, College Station, United States and Laura J Cobden, Utrecht University, Utrecht, Netherlands
Chairs:  Christine T Houser, Earth-Life Science Institute, Meguro, Tokyo, Japan and Jin Zhang, University of New Mexico Main Campus, Albuquerque, United States; Texas A & M University, College Station, United States
OSPA Liaison:  Jin Zhang, University of New Mexico Main Campus, Albuquerque, United States; Texas A & M University, College Station, United States

Cross-Listed:
  • MR - Mineral and Rock Physics
  • S - Seismology
Index Terms:

1025 Composition of the mantle [GEOCHEMISTRY]
1038 Mantle processes [GEOCHEMISTRY]
3924 High-pressure behavior [MINERAL PHYSICS]
7203 Body waves [SEISMOLOGY]

Abstracts Submitted to this Session:

Local Variations in the Upper-Mantle Transition Zone Structure From a Novel Approach Using High-Frequency Triplication Data (247096)
Miaki Ishii, Harvard University, Department of Earth and Planetary Sciences, Cambridge, MA, United States and Sunyoung Park, University of Chicago, Department of the Geophysical Sciences, Chicago, United States
How the 410-km Discontinuity Reflects Mantle Water Content: Constraints from High-Pressure Experiments on Wadsleyite Single-Crystal Elasticity (238020)
Johannes Buchen1, Hauke Marquardt2, Tiziana Boffa Ballaran3, Takaaki Kawazoe2, Sergio Speziale4 and Alexander Kurnosov3, (1)Bayerisches Geoinstitut, Universität Bayreuth, Bayreuth, Germany, (2)Bayerisches Geoinstitut, Universitaet Bayreuth, Bayreuth, Germany, (3)University of Bayreuth, Bayerisches Geoinstitut, Bayreuth, Germany, (4)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany
The high-pressure phase transitions of hydroxides (Invited) (238523)
Masayuki Nishi1,2, Yasuhiro Kuwayama3, Jun Tsuchiya1,2, Taku Tsuchiya1,2 and Tetsuo Irifune2,4, (1)Ehime University, Geodynamics Research Center, Matsuyama, Japan, (2)Tokyo Institute of Technology, Earth-Life Science Institute, Tokyo, Japan, (3)The University of Tokyo, Department of Earth and Planetary Science, Tokyo, Japan, (4)Ehime University, Geodynamics Research Center, Ehime, Japan
Computational and experimental studies of iron-bearing carbonates and silicate glasses at lower mantle pressures (Invited) (278750)
Natalia V Solomatova1, Jennifer M Jackson2, Paul D Asimow3, Wolfgang Sturhahn4, George R Rossman3 and Mathieu Roskosz5, (1)California Institute of Technology, Pasadena, CA, United States, (2)California Institute of Technology, Seismological Laboratory, Pasadena, CA, United States, (3)California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA, United States, (4)California Institute of Technology, Seismological Laboratory, Pasadena, United States, (5)MNHN National Museum of Natural History Paris, Paris, France
New results of the post-spinel transition pressure in Mg2SiO4 by means of in-situ X-ray diffraction in a multi-anvil press: complete agreement with the 660-km discontinuity depth (278191)
Takayuki Ishii1, Rong Huang1, Hongzhan Fei2, Iuliia Koemets3, Zhaodong Liu3, Fumiya Maeda4, Liang Yuan4, Lin Wang1, Dmitry Druzhbin3, Takafumi Yamamoto5, Shrikant Bhat6, Robert J Farla6, Takaaki Kawazoe7, Noriyoshi Tsujino8, Eleonora Kulik9, Yuji Higo10, Yoshinori Tange11 and Tomoo Katsura7, (1)University of Bayreuth, Bayerisches Geoinstitut, Bayreuth, Germany, (2)Zhejiang University, School of Earth Sciences, Hangzhou, China, (3)University of Bayreuth, Bayreuth, Germany, (4)Tohoku University, Sendai, Japan, (5)Hiroshima University, Higashi-Hiroshima, Japan, (6)Deutsche Elektronen-Synchrotron (DESY), Hamburg, Germany, (7)Bayerisches Geoinstitut, Universitaet Bayreuth, Bayreuth, Germany, (8)Japan Synchrotron Radiation Research Institute, Hyogo, Japan, (9)DESY, Hamburg, Germany, (10)Japan Synchrotron Radiation Research Institute, Kouto, Japan, (11)Ehime University, Ehime, Japan
Geometry and Width of the Ringwoodite – Bridgmanite+Ferropericlase Binary Loop in the System (Mg,Fe)2SiO4: Interpretation of the Sharpness of the 660-km Discontinuity (250839)
Tomoo Katsura1, Takayuki Ishii2, Rong Huang2, Fumiya Maeda3, Liang Yuan3, Shrikant Bhat4, Robert J Farla4, Takaaki Kawazoe5, Noriyoshi Tsujino6, Zhaodong Liu7, Hongzhan Fei8, Lin Wang2, Dmitry Druzhbin7, Takafumi Yamamoto9, Eleonora Kulik10, Iuliia Koemets7, Yuji Higo11 and Yoshinori Tange12, (1)University Bayreuth, Bayerisches Geoinstitut, Bayreuth, Germany, (2)University of Bayreuth, Bayerisches Geoinstitut, Bayreuth, Germany, (3)Tohoku University, Sendai, Japan, (4)Deutsche Elektronen-Synchrotron (DESY), Hamburg, Germany, (5)Bayerisches Geoinstitut, Universitaet Bayreuth, Bayreuth, Germany, (6)Japan Synchrotron Radiation Research Institute, Hyogo, Japan, (7)University of Bayreuth, Bayreuth, Germany, (8)Zhejiang University, School of Earth Sciences, Hangzhou, China, (9)Hiroshima University, Higashi-Hiroshima, Japan, (10)DESY, Hamburg, Germany, (11)Japan Synchrotron Radiation Research Institute, Kouto, Japan, (12)Ehime University, Ehime, Japan
Effect of Phase Transformations on Seismic Velocities (260765)
Donald J Weidner1, Li Li2, Matthew Whitaker2 and Richard Triplett3, (1)Mineral Physics Institute, Stony Brook University, Stony Brook, NY, United States, (2)Mineral Physics Institute, Stony Brook, NY, United States, (3)Stony Brook University, Mineral Physics Institute, Stony Brook, NY, United States

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