T23A:
Causes and Consequences of Flat Slab Subduction II Posters

Tuesday, 16 December 2014: 1:40 PM-6:00 PM
Chairs:  Lara S Wagner, Carnegie Institution for Science, Department of Terrestrial Magnetism, Washington, DC, United States and Suzanne Mahlburg Kay, Cornell University, Ithaca, NY, United States
Primary Conveners:  Megan L Anderson, Colorado College, Colorado Springs, CO, United States
Co-conveners:  Lara S Wagner, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States and Suzanne Mahlburg Kay, Cornell University, Ithaca, NY, United States
OSPA Liaisons:  Megan L Anderson, Colorado College, Colorado Springs, CO, United States

Abstracts Submitted to this Session:

 
Structure of the Flat Slab in Southern Peru
Yiran Ma and Robert W Clayton, California Institute of Technology, Pasadena, CA, United States
 
Tomographic imaging of the effects of Peruvian flat slab subduction on the Nazca slab and surrounding mantle under central and southern Peru
Alissa C Scire1, George Zandt1, Susan L Beck1, Brandon Bishop1, Cemal B Biryol2, Lara S Wagner3, Maureen D Long4, Estela Minaya5 and Hernando Tavera6, (1)University of Arizona, Tucson, AZ, United States, (2)University of North Carolina at Chapel Hill, Chapel Hill, NC, United States, (3)UNC-Chapel Hill, Chapel Hill, NC, United States, (4)Yale University, New Haven, CT, United States, (5)Observatorio San Calixto, La Paz, Bolivia, (6)Instituto Geofísico del Perú, Lima, Peru
 
Mantle Flow associated with the Peruvian Flat Slab and Subducting Nazca Ridge as inferred from Seismic Anisotropy
Caroline M Eakin1, Maureen D Long1, Lara S Wagner2, Susan L Beck3, Hernando Tavera4 and Cristobal Condori4, (1)Yale University, New Haven, CT, United States, (2)UNC-Chapel Hill, Chapel Hill, NC, United States, (3)University of Arizona, Tucson, AZ, United States, (4)Instituto Geofísico del Perú, Lima, Peru
 
Peruvian Trench to Andean Thrust Front: Evidence for Coupling of the Peruvian Flat Slab to the Over-Riding South American Plate
Brandon Bishop1, Susan L Beck1, George Zandt1, Alissa C Scire1, Lara S Wagner2, Maureen D Long3 and Hernando Tavera4, (1)University of Arizona, Tucson, AZ, United States, (2)UNC-Chapel Hill, Chapel Hill, NC, United States, (3)Yale University, New Haven, CT, United States, (4)Instituto Geofísico del Perú, Lima, Peru
 
Punctuated upper-crustal shortening, exhumation, and basin subsidence during flat-slab subduction in southern Peru
Nicholas Perez, University of Texas at Austin, Austin, TX, United States and Brian K Horton, University of Texas at Austin, Department of Geological Sciences and Institute for Geophysics, Austin, TX, United States
 
A lithospheric velocity model for the flat slab region of Argentina from joint inversion of Rayleigh-wave dispersion and teleseismic receiver functions
Jean-Baptiste Ammirati1,2, Patricia M Alvarado1,2 and Susan L Beck3, (1)National University of San Juan, Geophysics and Astronomy, San Juan, Argentina, (2)CONICET, CIGEOBIO, Buenos Aires, Argentina, (3)University of Arizona, Tucson, AZ, United States
 
Synorogenic Record of Basin Reorganization in the Sierras Pampeanas, La Rioja, Argentina
Andrea Stevens and Barbara Carrapa, University of Arizona, Tucson, AZ, United States
 
Investigating Mechanisms of South American Flat Subduction
Jiashun Hu, Armando Hermosillo and Lijun Liu, University of Illinois at Urbana-Champaign, Champaign, IL, United States
 
The effects of possibly buoyant flat slab segments on Nazca and South American plate motions
Rhys Shea, Carolina R Lithgow-Bertelloni and Fabio Crameri, University College London, London, United Kingdom
 
Lithosphere-Mantle Interactions Associated with Flat-Slab Subduction
Melanie Gerault1, Thorsten W Becker1, Laurent Husson2 and Eugene Humphreys3, (1)University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States, (2)Universite Joseph Fourier, ISTerre UMR CNRS 5275, Grenoble, France, (3)Univ Oregon, Eugene, OR, United States
 
Influence of Initial Geometry and Boundary Conditions on Flat Subduction Models and Resulting Topography
Peter Nelson, University of Texas at Austin, Austin, TX, United States and Robert Moucha, Syracuse University, Syracuse, NY, United States
 
Interaction Between Magmatism and Continental Extension, Insight From an Extensional Terrain in the Iranian Plateau
Ahmadreza Malekpour Alamdari1, Gary J Axen1 and Jamshid Hassanzadeh2, (1)New Mexico Institute of Mining and Technology, Socorro, NM, United States, (2)California Institute of Technology, Pasadena, CA, United States
 
Recurring Swarms of Deep Long Period Earthquakes in the Denali Volcanic Gap Suggest a Continuation of Volcanic Processes in the Absence of Active Volcanism
Stephen G Holtkamp1, Natalia A Ruppert1, Vipul Silwal1, Douglas H Christensen1 and Christopher J Nye2, (1)University of Alaska Fairbanks, Fairbanks, AK, United States, (2)Alaska Division of Geological and Geophysical Surveys, Fairbanks, AK, United States
 
Contrasting lithospheres: does one size fit all for the structure of mantle under foreland arches?
Megan L Anderson, Colorado College, Colorado Springs, CO, United States, Ryan C Porter, Northern Arizona University, Flagstaff, AZ, United States, William L Yeck, University of Colorado, Boulder, CO, United States, Anne F Sheehan, University of Colorado at Boulder, Boulder, CO, United States, Susan L Beck, University of Arizona, Tucson, AZ, United States and Hersh J Gilbert, Purdue University, West Lafayette, IN, United States
 
Reprocessing and Interpretation of Vintage Seismic Reflection Data: Evidence for the Tectonic History of the Rocky Mountain Trench, Northwest Montana.
Mason Porter1, Marvin Andrew Speece2, Bradley Stephen Rutherford1 and Kurt N Constenius3, (1)Montana Tech of The University of Montana, Butte, MT, United States, (2)Montana Tech, Butte, MT, United States, (3)University of Arizona, Department of Geosciences, Tucson, AZ, United States
 
Eocene lake basins in Wyoming and Nevada record rollback of the Farallon flat-slab beneath western North America
Michael Elliot Smith1, Elizabeth J. Cassel2, Brian R Jicha3, Bradley S Singer3 and Alan Carroll3, (1)Northern Arizona University, Flagstaff, AZ, United States, (2)University of Idaho, Moscow, ID, United States, (3)University of Wisconsin Madison, Madison, WI, United States
 
Are Colorado Plateau Eclogite Xenoliths Franciscan?: Oxygen Isotope Evidence From Zoned Garnet
William Floyd Hoover1, Frederick Z Page1, Daniel J Schulze2, Kouki Kitajima3 and John W Valley4, (1)Oberlin College, Oberlin, OH, United States, (2)University of Toronto, Toronto, ON, Canada, (3)University of Wisconsin, Madison, WI, United States, (4)Univ Wisconsin Madison, Madison, WI, United States
 
Evidence for Late Cretaceous–early Tertiary lower plate mylonitization and extension in the Harcuvar metamorphic core complex, Arizona: Evidence from U-Pb geochronology
Alexander Wrobel1, Martin Wong1 and John Selwyn Singleton2, (1)Colgate University, Hamilton, NY, United States, (2)George Mason University Fairfax, Fairfax, VA, United States
 
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