T52B:
Subduction Top to Bottom (ST2B-2) IX

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Session ID#: 16051

Session Description:
From top-to-bottom, many geological, geophysical, petrologic/geochemical, and theoretical advances have been made toward understanding subduction zone processes and dynamics since AGU Geophysical Monograph “Subduction Top to Bottom” was published 20 years ago. This session and a related themed issue in GEOSPHERE are intended to revisit the issues that were explored in the 1996 publication and re-assess them in light of recent advancements as well as explore new discoveries and advances in subduction zone research. We invite the broadest possible range of contributions, including subduction-related hazards (volcanic eruptions, earthquakes and tsunamis) and resources.
Primary Convener:  Gray E Bebout, Lehigh University, Dept. Earth and Environmental Sciences, Bethlehem, PA, United States
Conveners:  Robert J Stern, University of Texas at Dallas, Geosciences, Richardson, TX, United States, Philippe Agard, Sorbonne Université, CNRS-INSU, Institut des Sciences de la Terre Paris, ISTeP, Paris, France and Laura M Wallace, University of Texas, Institute for Geophysics, Austin, United States
Chairs:  Laura M Wallace, University of Texas, Institute for Geophysics, Austin, United States and Philippe Agard, Sorbonne Université, CNRS-INSU, Institut des Sciences de la Terre Paris, ISTeP, Paris, France
OSPA Liaison:  Laura M Wallace, University of Texas, Institute for Geophysics, Austin, United States

Cross-Listed:
  • DI - Study of the Earth's Deep Interior
  • MR - Mineral and Rock Physics
  • S - Seismology
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

1031 Subduction zone processes [GEOCHEMISTRY]
7240 Subduction zones [SEISMOLOGY]
8104 Continental margins: convergent [TECTONOPHYSICS]
8413 Subduction zone processes [VOLCANOLOGY]

Abstracts Submitted to this Session:

Plume-induced subduction (Invited) (118238)
Taras Gerya, ETH Zurich, Department of Earth Sciences, Zurich, Switzerland, Robert J Stern, University of Texas at Dallas, Geosciences, Richardson, TX, United States, Marzieh Baes, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, Stephan V. Sobolev, Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany and Scott Andrew Whattam, Korea University, Seoul, South Korea
The Distribution of Slab Dehydration in the Cascadia Subduction Zone beneath Mt. Rainier (124228)
Glenn A Spinelli, New Mexico Tech, Socorro, United States, Ikuko Wada, Department of Earth Sciences, Minneapolis, United States, Robert N Harris, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States and Jiangheng He, Pacific Geoscience Centre, Geological Survey of Canada, Sidney, BC, Canada
Influence of mantle viscosity structure and mineral grain size on fluid migration pathways in the mantle wedge. (125160)
Nestor Cerpa, University of Minnesota Twin Cities, Minneapolis, MN, United States, Ikuko Wada, Department of Earth Sciences, Minneapolis, United States, Cian R Wilson, Columbia University of New York, Palisades, United States and Marc W Spiegelman, Columbia University of New York, Palisades, NY, United States
Lattice Preferred Orientation of Talc and Implications for Seismic Anisotropy in Subduction Zones (145689)
Jungjin Lee, Seoul National University, Tectonophysics Laboratory, Seoul, Korea, Republic of (South), Haemyeong Jung, Seoul National University, School of Earth and Environmental Sciences, Seoul, Korea, Republic of (South) and Reiner Klemd, GeoZentrum Nordbayern, Erlangen, Germany
Hydration of Eclogite at the Plate Interface: How Fluids Infiltrate into a Dry Rock (Invited) (125953)
Timm John, Free University of Berlin, Institute of Geological Sciences, Berlin, Germany and Johannes C Vrijmoed, Free University of Berlin, Berlin, Germany
The Roles of Volatile Content, Oxidation State, and Fractionation/Contamination of Arc Magmas on Metallogenic Processes (187553)
Jeremy P. Richards, University of Alberta, Edmonton, AB, Canada
Basalt-Eclogite Transition in the Subducted Oceanic Crust Detected by High Frequency Seismic Waves (152199)
Wenbo Wu, California Institute of Technology, Seismological Laboratory, Pasadena, CA, United States and Jessica C E Irving, University of Bristol, School of Earth Sciences, Bristol, BS8, United Kingdom
The Terminal Stage of Subduction: the Hindu Kush Slab Break-off (133911)
Sofia-Katerina Kufner1, Bernd Schurr2, Christian Sippl1, Xiaohui Yuan2, Lothar Ratschbacher3, Arib s/of Mohammad Akbar4, Anatoly Ischuk5, Shohrukh Murodkulov6, Felix Schneider7, James Mechie2 and Frederik J Tilmann8, (1)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, (2)Deutsches GeoForschungsZemtrum GFZ, Potsdam, Germany, (3)Freiberg University of Mining and Technology, Geology, Freiberg, Germany, (4)Tajik Technical University, Dushanbe, Tajikistan, (5)Tajik Academy of Sciences, Dushanbe, Tajikistan, (6)Tajik Academy of Sciences, Tajik Technical University, Dushanbe, Tajikistan, (7)Universität Wien, Wien, Austria, (8)Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Potsdam, Germany

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