DI22A:
Slabs in the Mantle and the Fate of Subducted Material I

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Session ID#: 16741

Session Description:
Subducting slabs are not only the primary source for chemical and thermal heterogeneity within the Earth’s mantle due to their dominating role in Earth’s mass transport, but are also the main drivers of both flow in their surroundings and global mantle convection. Constraining the behavior, chemistry, and physical properties of slabs is therefore crucial for insights into the overall evolution and dynamics of the Earth’s interior. 

In this session, some key areas of interest are slab rheology and deformation, slab-mantle interaction (e.g., transition zone barrier), transport of water and volatiles to the deep mantle, subduction life-cycle including the slab graveyard, and separation of the oceanic crust with associated implications for mantle mixing and composition.

We welcome therefore contributions from a wide range of disciplines including seismology, mineral and rock physics, petrology, geochemistry, and geodynamics.

Primary Convener:  Caroline M Eakin, Australian National University, Canberra, Australia
Conveners:  Fabio Crameri, University of Oslo, Centre for Earth Evolution and Dynamics (CEED), Oslo, Norway, Mainak Mookherjee, Florida State University, Earth, Ocean, and Atmospheric Science, Tallahassee, FL, United States and Ikuo Katayama, Hiroshima University, Higashi-Hiroshima, Japan
Chairs:  Caroline M Eakin, Australian National University, Canberra, Australia, Ikuo Katayama, Hiroshima University, Higashi-Hiroshima, Japan and Mainak Mookherjee, Florida State University, Earth, Ocean, and Atmospheric Science, Tallahassee, FL, United States
OSPA Liaison:  Caroline M Eakin, Australian National University, Canberra, Australia

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

1031 Subduction zone processes [GEOCHEMISTRY]
3999 General or miscellaneous [MINERAL PHYSICS]
7240 Subduction zones [SEISMOLOGY]
8120 Dynamics of lithosphere and mantle: general [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Rheological evolution of subducting slabs (Invited) (121182)
Greg Hirth, Brown University, Department of Earth, Environmental, and Planetary Sciences, Providence, RI, United States
Effect of Water on Grain-Scale Microstructure Evolution during Olivine-Wadsleyite Phase Transition: an Experimental Investigation (152379)
Anwar Mohiuddin, Yale University, Geology & Geophysics, New Haven, CT, United States and Shun-ichiro Karato, Yale University, Earth and Planetary Sciences, New Haven, CT, United States
Deformation of phase D and Earth's deep water cycle (155902)
Andrew Walker, University of Leeds, School of Earth and Environment, Leeds, United Kingdom, Richard Skelton, Australian National University, Research School of Earth Sciences, Canberra, Australia and Andy Nowacki, University of Leeds, School of Earth and Environment, Leeds, LS2, United Kingdom
Ubiquitous lower mantle anisotropy beneath subduction zones: new rheological and mineralogical constraints (158064)
Ana MG Ferreira, University College London, Department of Earth Sciences, Faculty of Maths & Physical Sciences, London, United Kingdom, Manuele Faccenda, Università di Padova, Dipartimento di Geoscienze, Padova, Italy, Sung-Joon Chang, Kangwon National University, Chuncheon, South Korea, William Sturgeon, University College London, London, United Kingdom and Lewis Schardong, University College London, Earth Sciences, London, United Kingdom
Complex Subduction Imaged by Diffractional Tomography of USArray Receiver Functions (144375)
Ying Zhou, Virginia Tech, Department of Geosciences, Blacksburg, VA, United States
High resolution mapping of seismic properties across upper mantle discontinuities in the stagnant slab region beneath Korea (152399)
Younghee Kim, Seoul National University, School of Earth and Environmental Sciences, Seoul, Korea, Republic of (South), Xuzhang Shen, Sun Yat-sen University, School of Earth Sciences and Engineering, Guangdong Provincial Key Laboratory of Geodynamics and Geohazards, Zhuhai, China, Teh-Ru Alex Song, University College London, Department of Earth Sciences, London, United Kingdom and Hobin Lim, Korea Institute of Geoscience and Mineral Resources, Earthquake Research Center, Daejeon, South Korea
Untangling Slab Dynamics Using 3-D Numerical and Analytical Models (181769)
Adam Holt1, Leigh Royden1 and Thorsten W Becker2, (1)Massachusetts Institute of Technology, Cambridge, MA, United States, (2)University of Texas at Austin, Jackson School of Geosciences, Austin, TX, United States
Slab-driven Mantle Flow in Three-dimensional Subduction Systems (Invited) (124345)
Margarete Ann Jadamec, University of Houston, Dept. of Earth and Atmospheric Sciences, Houston, TX, United States

See more of: Study of Earth's Deep Interior