The Mantle Transition Zone: Its Role in Earth’s Thermochemical Evolution I

Wednesday, 17 December 2014: 10:20 AM-12:20 PM
Chairs:  Caroline Beghein, University of California Los Angeles, Earth, Space, and Planetary Sciences, Los Angeles, CA, United States and Nicholas C Schmerr, University of Maryland College Park, College Park, MD, United States
Primary Conveners:  Nicholas C. Schmerr, University of Maryland, College Park, MD, United States
Co-conveners:  Jiuhua Chen, Florida International Univ., Miami, FL, United States, Elizabeth Day, University of Cambridge, Cambridge, United Kingdom and Caroline Beghein, UCLA - Earth and Space Sciences, Los Angeles, CA, United States
OSPA Liaisons:  Elizabeth A Day, Bullard Laboratories, Cambridge, CB3, United Kingdom

Abstracts Submitted to this Session:

10:20 AM
Water and Slabs in the Transition Zone - Hydrous Ringwoodite in Diamond
D. Graham Pearson1, Frank E. Brenker2, Fabrizio Nestola3, John McNeill4, Lutz Nasdala5, Mark Hutchison6, Sergei Matveev1, Kathy Mather4, Laszlo Vincze7, Sylvia Schmitz2 and Bart Vekemens7, (1)University of Alberta, Edmonton, AB, Canada, (2)Geothe University, Frankfurt, Germany, (3)Department of Geosciences, University of Padova, Padova, Italy, (4)Durham University, Durham, United Kingdom, (5)Universitat Wien, Vienna, Austria, (6)Trigon GeoServices Ltd, Las Vegas, United States, (7)Ghent University, Ghent, Belgium
10:35 AM
Water Partitioning at the Base of the Transition Zone: No Need for a Lower Mantle Water Filter?
Wendy R Panero, Ohio State University, Columbus, OH, United States and Jeffrey S Pigott, Ohio State University Main Campus, Columbus, OH, United States
10:50 AM
Imaging the Mantle Transition Zone Using Multimode Waveform Tomography
Andrew J Schaeffer and Sergei Lebedev, Dublin Institute for Advanced Studies, Dublin, Ireland
11:05 AM
The Fate of Subducted Sediment at the Base of the Mantle Transition Zone: Water and the K-hollandite → NAL Phase Transformation
Robert P Rapp, The Australian National University, Research School of Earth Sciences, Canberra, Australia, Mainak Mookherjee, Cornell University, Ithaca, NY, United States, Norimasa Nishiyama, Deutsches Elektronen Synchrotron DESY, Hamburg, Germany and Tetsuo Irifune, Ehime University, Matsuyama, Japan
11:20 AM
Imaging the Effects of Subducting Slabs on the Mantle Transition Zone with Pds Receiver Functions Beneath Southern Europe
Sanne Cottaar1 and Arwen Fedora Deuss1,2, (1)University of Cambridge, Cambridge, United Kingdom, (2)Utrecht University, Utrecht, Netherlands
11:35 AM
High Resolution Transition Zone Discontinuity Images across the Pacific Ocean from SS Precursors Using Local Slant Stack Filters
Zhao Zheng1, Barbara A Romanowicz1,2 and Sergi Ventosa2, (1)UC Berkeley Seismological Laboratory, Berkeley, CA, United States, (2)Institut de Physique du Globe, Paris, France
11:50 AM
Testing thermochemical mantle circulation with Mantle Transition Zone velocities and topography
Christine T Houser and John W Hernlund, Earth-Life Science Institute, Meguro, Japan
12:05 PM
Influence of majorite on hot plumes
Hiroki Ichikawa1, Masanori Kameyama1, Hiroki Senshu2, Kenji Kawai3 and Shigenori Maruyama4, (1)Ehime University, Matsuyama, Japan, (2)Chiba Institute of Technology, Narashino, Chiba, Japan, (3)University of Tokyo, Bunkyo-ku, Japan, (4)Tokyo Inst Technology, Tokyo, Japan