T41D:
Multidisciplinary Constraints on the Rheology and Dynamics of the Lithosphere and Asthenosphere II Posters


Session ID#: 8257

Session Description:
The effective rheology of the lithosphere is of key importance for most tectonic processes. Despite remarkable advances in experimental rock-mechanics, the implications of laboratory data for tectonic processes are still not straightforward, as this typically requires extrapolations over many orders of magnitude in strain rate. Natural processes might also be controlled by local and regional conditions, including lithology, heterogeneities, fluid content, and the thermal structure of the lithosphere.

Our goal is to reconcile short-time/small-scale and long-time/large-scale observations with models to assess the rheological properties of the lithosphere and its role in geodynamic processes such as subduction, collision, or mantle-lithosphere interactions. We also welcome discussions of new methods to directly constrain rheology from geophysical and geological observations.

We invite researchers from different domains (rock mechanics, geodynamics, structural geology, geodesy and geophysics) to share their views on how we can improve our knowledge of the long-term rheology of the lithosphere.

Primary Convener:  Boris J P Kaus, Johannes Gutenberg University of Mainz, Institute for Geosciences, Mainz, Germany
Conveners:  Jessica M Warren, University of Delaware, Earth Sciences, Newark, DE, United States, E B Burov, University Pierre and Marie Curie Paris VI, Paris, France and Claire A Currie, University of Alberta, Department of Physics, Edmonton, AB, Canada
Chairs:  E B Burov, University Pierre and Marie Curie Paris VI, Paris, France, Claire A Currie, University of Alberta, Department of Physics, Edmonton, AB, Canada and Taras Gerya, ETH Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland
OSPA Liaison:  Boris J P Kaus, Johannes Gutenberg University of Mainz, Institute for Geosciences, Mainz, Germany

Cross-Listed:
  • DI - Study of the Earth's Deep Interior
  • G - Geodesy
  • MR - Mineral and Rock Physics
Index Terms:

1236 Rheology of the lithosphere and mantle [GEODESY AND GRAVITY]
3902 Creep and deformation [MINERAL PHYSICS]
8120 Dynamics of lithosphere and mantle: general [TECTONOPHYSICS]
8160 Rheology: general [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Teleseismic Body Wave Analysis of the Madagascan Asthenosphere, and the Relationship to Intraplate Volcanism (65388)
Martin J Pratt1, Michael Edward Wysession2, Ghassan I Aleqabi1, Douglas Wiens3, Andrew Nyblade4, Patrick Shore5, Gérard Rambolamanana6, Rakotondraibe Tsiriandrimanana6 and Fenitra Andriampenomanana6, (1)Washington University in St Louis, Department of Earth and Planetary Sciences, St. Louis, MO, United States, (2)Washington Univ, Saint Louis, MO, United States, (3)Washington University in St. Louis, St. Louis, United States, (4)Pennsylvania State University, Department of Geosciences, University Park, United States, (5)Washington University in St Louis, St. Louis, MO, United States, (6)Institute and Observatory of Geophysics Antananarivo-University of Antananarivo, Physics, Antananarivo, Madagascar
Viscous Fingering in the Mantle Asthenosphere (80464)
Uchitha Suranga Nissanka1, Dayanthie S Weeraratne1, E Marc Parmentier2 and JOHN MICHA Rincon1, (1)California State University Northridge, Northridge, CA, United States, (2)Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, United States
Rapid Plate Motion Variations and Continental Uplift as Surface Expressions of Asthenospheric Flow (72021)
Lorenzo Colli1, Ingo Stotz2, Hans-Peter Bunge1, Mark Andrew Smethurst3, Stuart Raymond Clark4, Giampiero Iaffaldano2, Andres Tassara5, Francois Guillocheau6 and Maria Chiara Bianchi1, (1)Ludwig Maximilians University of Munich, Munich, Germany, (2)University of Copenhagen, Copenhagen, Denmark, (3)Camborne School of Mines, Penryn, TR10, United Kingdom, (4)Simula Research Laboratory, Lysaker, Norway, (5)University of Concepcion, Departamento de Ciencias de la Tierra, Concepcion, Chile, (6)Université de Rennes, Géosciences Rennes, Rennes, France
Constraints on Flow Dynamics within the Oceanic Asthenosphere from a High-Resolution Estimate of Seismic Anisotropy (78621)
James B Gaherty1, Pei-Ying Lin2, Ge Jin2, John A Collins3, Daniel Lizarralde4, Rob L Evans4, Greg Hirth5 and Hannah F Mark6, (1)Organization Not Listed, Washington, DC, United States, (2)LDEO, Columbia Univ., Palisades, NY, United States, (3)WHOI, Woods Hole, MA, United States, (4)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (5)Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, United States, (6)Massachusetts Institute of Technology, Cambridge, MA, United States
Seismic Reflection Imaging of the Lithosphere-asthenosphere Boundary Across the Atlantic Ocean (66229)
Milena Marjanovic, Satish Chandra Singh, Pranav Audhkhasi and Fares Mehouachi, Institut de Physique du Globe de Paris, Paris, France
The depth of the Lithosphere-Asthenophere boundary beneath the world oldest ocean: the Ionian plate case-study (79450)
Nicola Piana Agostinetti, Dublin Institute for Advanced Studies, Dublin, Ireland, Irene Bianchi, University of Vienna, Vienna, Austria and Claudio Chiarabba, National Institute of Geophysics and Volcanology, Rome, Italy
Seismic Discontinuities beneath the Southwestern United States from S Receiver Functions (69482)
Olufemi Ebenezer Akanbi, University of Houston, Houston, TX, United States and Aibing Li, University of Houston, EAS, Houston, TX, United States
Lithospheric Shear Velocity Structure of South Island, New Zealand from Rayleigh Wave Tomography of Amphibious Array Data (85970)
Justin Scott Ball, University of Colorado at Boulder, Boulder, CO, United States, Anne Sheehan, University of Colorado Boulder, Department of Geological Sciences and Cooperative Institute for Research in Environmental Sciences (CIRES), Boulder, United States, Josh C Stachnik, Lehigh University, Department of Earth and Environmental Sciences, Bethlehem, PA, United States, Fan-Chi Lin, University of Utah, Department of Geology and Geophysics, Salt Lake City, United States and John A Collins, WHOI, Woods Hole, MA, United States
3-D Computational Modelling of Oblique Continental Collision near South Island, New Zealand (83210)
Lev Karatun and Russell Pysklywec, University of Toronto, Department of Earth Sciences, Toronto, ON, Canada
Controls of Lithospheric Mechanical Strength on the Deformation Pattern of Tien Shan (76669)
Yongdong Li, China University of Geosciences Wuhan, Institute of Geophysics and Geomatics, Wuhan, China, Xiong Xiong, China University of Geoscience, Wuhan, Wuhan, China, Yong Zheng, Institute of Geodesy & Geophysics, Chinese Academy of Sciences, Wuhan, China, Xiangyun Hu, China University of Geosciences, Institute of Geophysics & Geomatics, Wuhan, China and Yufen Zhang, China University of Geosciences Wuhan, Wuhan, China
Exploring new refinements to estimation of Te and mass loading (70668)
Brent Scheppmann, Utah State University, Geology, Logan, UT, United States and Anthony R Lowry, Utah State University, Logan, UT, United States
Lithospheric Flexure and Sedimentary Basin Evolution: the Steer’s Head Model Re-visited (83289)
James Daniel Paul Moore and Anthony Brian Watts, University of Oxford, Oxford, United Kingdom
Melt-induced weakening of the lithosphere: theory and geodynamic implications (60213)
Taras Gerya, ETH Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland
Characteristic Size of Tectonic Plates: Insights from Boundary Layer Theory with Grain-damage (76732)
Elvira Mulyukova, Northwestern University, Earth and Planetary Sciences, Evanston, IL, United States and David Bercovici, Yale University, Earth & Planetary Sciences, New Haven, CT, United States
Geodynamic Inversion to Constrain the Nonlinear Rheology of the Lithosphere (78067)
Boris J P Kaus and Tobias Baumann, Johannes Gutenberg University of Mainz, Institute for Geosciences, Mainz, Germany
Quantifying the Relationship between Strike-slip Fault Spacing and Brittle Crust Thickness in Continental Settings based on Sandbox Experiments (76039)
Jessica C Lin1, Andrew V Zuza2 and An Yin2, (1)University of California Los Angeles, Los Angeles, CA, United States, (2)University of California Los Angeles, Earth, Planetary, and Space Sciences, Los Angeles, CA, United States
A Brittle-Ductile Transition Preserved in the Sierra Crest Shear Zone, Sierra Nevada, CA: a Natural Laboratory for Examining Rheologically-Controlled Brittle and Ductile Deformation Partitioning (77168)
Snir Attia1, Scott R Paterson1, Sean Matthew Hartman1 and Dazhi Jiang2, (1)University of Southern California, Los Angeles, CA, United States, (2)University of Western Ontario, London, ON, Canada
Importance of the temperature field and its uncertainties in modeling ductile deformation of the southern California lithosphere (70852)
Wayne R Thatcher, USGS Western Regional Offices Menlo Park, Menlo Park, CA, United States, David S Chapman, University of Utah, Salt Lake City, UT, United States, Colin Francis Williams, USGS, Baltimore, MD, United States and Elizabeth H Hearn, Self Employed, Washington, DC, United States
Strain localization in the ductile crust triggers by microfracturing and high pore-fluid pressure (72237)
Maxime Bernaudin1,2 and Frédéric Gueydan2, (1)University of Montpellier II, Montpellier Cedex 05, France, (2)Géosciences Montpellier, Montpellier Cedex 05, France
Strain localisation in two-phase materials: Insights from centimetre-scale numerical models and laboratory experiments with ice mixtures (77183)
Daria Czaplinska, Macquarie University, Sydney, Australia, Carolina Pagli, University of Sydney, EarthByte Group, Sydney, Australia, Sandra Piazolo, Macquarie University, Sydney, NSW, Australia, Christopher G Wilson, Monash University, School of Earth, Atmosphere and Environment, Melbourne, Australia and Javier Quinteros, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany
Geodetic Estimate of Water in the Wharton Basin Upper Mantle (77587)
Sagar Shrishailappa Masuti1,2, Sylvain Barbot3, Shun-ichiro Karato4, Lujia Feng5, Paramesh Bannerjee2 and Danny Natawidjaja6, (1)Nanyang technological university, Singapore, Singapore, (2)Earth Observatory of Singapore, Singapore, Singapore, (3)University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States, (4)Yale University, Earth and Planetary Sciences, New Haven, CT, United States, (5)Earth Observatory of Singapore, Nanyang Technological University, Singapore, Singapore, (6)Indonesian Institute of Sciences, Research Center for Geotechnology, Bandung, Indonesia

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