T32B:
Multidisciplinary Approaches to Outstanding Questions in Andean Tectonics

Submit an Abstract to this Session



Session ID#: 31298

Session Description:
The Andes are linked to diverse issues that include lithosphere through surface interactions, seismic hazards, biotic diversity, resources, and global climate. However, debate persists regarding the temporal and spatial patterns of orogenesis. Resolving the interactions among subduction geometries, inherited crustal architecture, deformation, arc volcanism, basin subsidence, and surface uplift requires consideration of multiple subdisciplines. We invite contributions from geophysics, geochemistry, geochronology, geomorphology, structural geology, stratigraphy, and geodynamic modeling that investigate the long-term and/or along-strike variation and evolution of the Andean margin. We are particularly interested in studies that integrate varied or complementary datasets, and examine or expand concepts generated from single-discipline datasets. We also encourage contributions that leverage a growing multidisciplinary community interest in developing a subduction zone 4D initiative to address outstanding questions in Andean tectonics and convergent margin geodynamics.
Primary Convener:  Nicholas Perez, Texas A&M University College Station, College Station, United States
Conveners:  Joel E Saylor, University of Houston, Houston, United States and Kevin Michael Ward, University of Utah, Salt Lake City, UT, United States
Chairs:  Nicholas Perez, Texas A&M University College Station, College Station, United States, Joel E Saylor, Northern Arizona University, Flagstaff, United States and Kevin Michael Ward, South Dakota School of Mines and Technology, Rapid City, SD, United States
OSPA Liaison:  Kevin Michael Ward, South Dakota School of Mines and Technology, Rapid City, SD, United States

Cross-Listed:
  • EP - Earth and Planetary Surface Processes
  • S - Seismology
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

7218 Lithosphere [SEISMOLOGY]
8108 Continental tectonics: compressional [TECTONOPHYSICS]
8169 Sedimentary basin processes [TECTONOPHYSICS]
8170 Subduction zone processes [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Seismic tomographic constraints on plate-tectonic reconstructions of Nazca subduction under South America since late Cretaceous (∼80 Ma) (257427)
Yi-Wei Chen1, Jonny Wu2 and John Suppe1, (1)University of Houston, Department of Earth and Atmospheric Sciences, Houston, United States, (2)University of Houston, Department of Earth and Atmospheric Sciences, Houston, TX, United States
Connecting the surface to the deep: Flat-slab subduction dynamics and the evolution of western Amazonia (Invited) (210494)
Caroline M Eakin, Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia
Quantifying Wide-Area Continental Deformation: Palinspastic Reconstruction of the Northern Andes (255752)
Camilo Montes, Universidad de los Andes, Bogotá, Colombia; Yachay Tech University, Imbabura, Ecuador, Andres Felipe Rodriguez-Corcho, Universidad de los Andes, Bogota, Colombia, Natalia Hoyos, Universidad del Norte, Barranquilla, Colombia, Agustin Cardona, Universdad Nacional de Colombia, Sede Medellín, Medellín, Colombia and German Bayona, Corporación Geológica Ares, Bogotá, Colombia
The lithospheric strength controls on foreland deformation patterns in the Andean Orogen: Insights from numerical models (271910)
Sibiao Liu1,2, Stephan V Sobolev3,4, Andrey Y. Babeyko2, Frank Krueger1, Javier Quinteros2 and Anton Popov5, (1)University of Potsdam, Institute of Earth and Environmental Science, Potsdam, Germany, (2)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, (3)University of Potsdam, Institute of Geosciences, Potsdam, Germany, (4)Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany, (5)Johannes Gutenberg University of Mainz, Institute for Geosciences, Mainz, Germany
Ambient noise tomography of Ecuador: Fore- and back-arc velocity structure and radial anisotropy (291593)
Lynner Colton1, Susan L Beck2, Robert Porritt3, Anne Meltzer4, Alexandra Alvarado5, Gabriela Ponce6, Mario Calixto Ruiz7, Mariah Chambers Hoskins8, Josh Stachnik4, Andreas Rietbrock9, Sergio Leon-Rios10, Marc M Regnier11, Hans Agurto-Detzel12, Yvonne Font13 and Philippe Charvis14, (1)University of Arizona, Tucson, AZ, United States, (2)University of Arizona, Department of Geosciences, Tucson, AZ, United States, (3)University of Texas at Austin, Austin, TX, United States, (4)Lehigh University, Earth and Environmental Sciences, Bethlehem, PA, United States, (5)Instituto Geofísico de la Escuela Politécnica Nacional, Quito, Ecuador, (6)Instituto Geofisico EPN - Ecuador, Quito, Ecuador, (7)Instituto Geofísico, Escuela Politécnica Nacional, Quito, Ecuador, (8)Lehigh University, Earth and Environmental Sciences, Bethlehem, United States, (9)Karlsruhe Institute of Technology, Geophysical Institute, Karlsruhe, Germany, (10)University of Liverpool, Liverpool, L69, United Kingdom, (11)Géoazur - Université Côte d'Azur - IRD - CNRS - Observatoire de la côte d'Azur, Valbonne, France, (12)Géoazur - Université Nice Sophia Antipolis, Université Côte d'Azur, IRD, CNRS, OCA, Valbonne, France, (13)Université Côte d’Azur, IRD, CNRS, Observatoire de la Côte d’Azur, Géoazur, Valbonne, France, (14)Université Côte d’Azur, CNRS, IRD, Observatoire de la Côte d’Azur, Géoazur, Valbonne, France
Top-down Nazca subduction controls on volcanism location and explosive nature in the Andes (273609)
Mirko Velic, Monash University, Melbourne, VIC, Australia, Nicolas Riel Jr, ISTerre Institute of Earth Sciences, Saint Martin d'Hères, France and Fabio A Capitanio, Monash University, School of Earth, Atmosphere and Environment, Melbourne, VIC, Australia
Magmatic and Seismic Evidence for the Neogene Evolution of the Subducting Slab and Crustal and Mantle Lithosphere under the Central Andes (Invited) (235087)
Suzanne Mahlburg Kay, Cornell University, Ithaca, NY, United States and Eric A Sandvol, University of Missouri, Department of Geological Sciences, Columbia, United States
New insights on regional tectonics and crustal composition of the eastern Sierras Pampeanas in the Andean back arc region, Argentina (31-32ºS) (275284)
Jean-Baptiste Ammirati, University of Chile, Santiago, Chile, Agostina Lía Venerdini, CIGEOBIO (CONICET - FCEFN, Universidad Nacional de San Juan), Grupo de Sismotectónica, San Juan, Argentina, Patricia M Alvarado, CIGEOBIO (CONICET, Universidad Nacional de San Juan), Departamento de Geofísica y Astronomía, FCEFN, San Juan, Argentina and Hersh J Gilbert, University of Calgary, Department of Geoscience, Calgary, AB, Canada

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