DI51A:
G, LAB, and MLDs: What Are They Anyway? Lithospheric Boundary Structures within and beneath the Oceans and Continents II Posters

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Session ID#: 13769

Session Description:
Recent advances in seismic imaging suggest that that the internal structure of the rigid outer layer of the Earth, the lithosphere, appears to have appears more complex than a single boundary layer.  Seismology, numerical modeling, mineral, and rock physics, each provide clues about the origins of these structures.

Just what can we discern from the G, LAB and MLDs?  Is it significant that they occur around the same depths within the ocean and continental lithosphere?  Or is that just a coincidence? 

The session seeks submissions from a variety of disciplines to help define and clarify both global and regional lithospheric boundary structures inferred from observations, models, and experiments.  Multidisciplinary approaches that help better understand the structure and evolution of the plates are encouraged.

Primary Convener:  Meghan Samanth Miller, University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States
Conveners:  Catherine M Cooper, Washington State University, School of the Environment, Pullman, United States, Philip A Skemer, Washington University in St Louis, St. Louis, MO, United States and Caroline Beghein, University of California Los Angeles, Earth, Space, and Planetary Sciences, Los Angeles, CA, United States
Chairs:  Philip A Skemer, Washington University in St Louis, St. Louis, MO, United States and Meghan Samanth Miller, University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States
OSPA Liaison:  Philip A Skemer, Washington University in St Louis, St. Louis, MO, United States

Cross-Listed:
  • S - Seismology
  • T - Tectonophysics
Index Terms:

1025 Composition of the mantle [GEOCHEMISTRY]
7218 Lithosphere [SEISMOLOGY]
8103 Continental cratons [TECTONOPHYSICS]
8124 Earth's interior: composition and state [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Seismic evidence of the lithosphere-asthenosphere boundary beneath Izu-Bonin area (124456)
Qinghui Cui1,2, Yajian Gao1,2 and Yuanze Zhou1,2, (1)University of Chinese Academy of Sciences, Beijing, China, (2)Key Laboratory of Computation Geodynamics,Chinese Academy of Sciences, Beijing, China
Seismic Reflection Image of the Lithosphere-Asthenosphere Boundary across the Equatorial Fracture Zones in the Atlantic Ocean. (125959)
Fares Mehouachi and Satish Chandra Singh, Institut de Physique du Globe de Paris, Paris, France
Studying the Sub-Crustal Reflectors in SW-Spain (131794)
Imma Palomeras1, Puy Ayarza1, Ramon Carbonell2, Siddique Akhtar Ehsan2, Juan Carlos Afonso3 and Jordi Diaz2, (1)University of Salamanca, Geology, Salamanca, Spain, (2)ICTJA-CSIC, Barcelona, Spain, (3)Macquarie University, ARC Centre of Excellence for Core to Crust Fluid Systems and GEMOC, Sydney, Australia
Hales discontinuity beneath India: selective appearance and a case for systematic modeling (132826)
Jashodhara Chaudhury and Supriyo Mitra, Indian Institute of Science Education and Research Kolkata, Department of Earth Sciences, Kolkata, India
Re-evaluation of Thermal History of Mantle Xenoliths from Ichinomegata, NE Japan: Implications on Lithosphere-Asthenosphere Interaction (144558)
Yuto Sato and Kazuhito Ozawa, University of Tokyo, Bunkyo-ku, Japan
Assessing the Pacific Lithosphere-Asthenosphere Depth From Various Proxies With a Bayesian Approach (155249)
Zheng Xing, University of California Los Angeles, Los Angeles, CA, United States and Caroline Beghein, University of California Los Angeles, Earth, Space, and Planetary Sciences, Los Angeles, CA, United States
Structure of the Lithosphere-Asthenosphere Boundary Onshore and Offshore the California Continental Margin from Three-Dimensional Seismic Anisotropy (163732)
Carlos Daniel Gomez1, Lennin Escobar Sr1, Sampath Rathnayaka1, Dayanthie S Weeraratne1 and Monica D Kohler2, (1)California State University Northridge, Northridge, CA, United States, (2)California Institute of Technology, Pasadena, CA, United States
Comparison of Oceanic and Continental Lithosphere, Asthenosphere, and the LAB Through Shear Velocity Inversion of Rayleigh Wave Data from the ALBACORE Amphibious Array in Southern California (163776)
Kaitlyn Amodeo1, Sampath Rathnayaka1, Dayanthie S Weeraratne1 and Monica D Kohler2, (1)California State University Northridge, Northridge, CA, United States, (2)California Institute of Technology, Pasadena, CA, United States
Lithospheric Layering beneath Southern Africa Constrained by S-to-P Receiver Functions (168837)
Lin Liu, Kelly Hong Liu and Stephen S Gao, Missouri University of Science and Technology, Geology and Geophysics Program, Rolla, MO, United States
Signature of the oceanic lithosphere asthenosphere system from seafloor electromagnetic and seismic observations (170264)
Hisashi Utada, University of Tokyo, Bunkyo-ku, Japan and Hitoshi Kawakatsu, Earthquake Research Institute, The University of Tokyo, Tokyo, Japan
Dipping Upper Mantle Interface Beneath The North Tanzania Divergence from Receiver Functions (173068)
Christel Tiberi1, Matthieu Plasman2, Stephanie Gautier3, Sophie Peyrat4, Julie Perrot5, Julie Albaric6, Jacques Deverchere7, Anne Deschamps8, Cynthia J Ebinger9, Steven W Roecker10, Gabriel Daudi Mulibo11, Richard Ferdinand11, Alfred Muzuka12, Mickael Msabi11 and Sindato Moreto13, (1)University of Montpellier II, Montpellier Cedex 05, France, (2)IUEM Institut Universitaire Européen de la Mer, Plouzané, France, (3)Géosciences Montpellier, Montpellier Cedex 05, France, (4)Geosciences Montpellier, UMR5242, Universite Montpellier 2, Montpellier, France, (5)CNRS-Université de Bretagne Occidentale, Laboratoire Géosciences Océan, Institut Universitaire Européen de la Mer, Plouzané, France, (6)University of Franche-Comté, Chrono-environnement, Besançon, France, (7)UBO University, Brest, France, (8)UNS/CNRS, Valbonne, France, (9)Tulane University, School of Science & Engineering, New Orleans, United States, (10)Rensselaer Polytechnic Inst, Earth & Environmental Sciences, Troy, United States, (11)University of Dar es Salaam, Dar es Salaam, Tanzania, (12)Nelson Mandela Institute of Science and Technology, Arusha, Tanzania, (13)Ngorongoro Conservation Area, Karatu, Tanzania
P- and S- Wave Receiver Function Images at the Lithosphere-Asthenosphere Boundary in Southwest China (174292)
Weilai Wang1, Jianping Wu1, Lihua Fang2 and Yan Cai2, (1)Institute of Geophysics, China Earthquake Administration, Beijing, China, (2)Institute of Geophysics, China Eathquake Administration, Beijing, China

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