T057
The manifestation of subduction: geochemical, petrological, and geophysical constraints on lithospheric structure, composition, and evolution

Session ID#: 83741

Session Description:
Subduction zones display a rich diversity in magmatic, tectonic and metamorphic processes at a wide range of spatial and temporal scales. As major crust-producing, -refining and -recycling factories, their evolution greatly influences the chemical composition and physical characteristics of the overriding lithosphere. However, many of these aspects, including subduction initiation and evolution, timing and evolution of magmatism, and contribution to the production of continental crust, are not well understood.

Understanding these aspects requires collaborative research, integrated perspectives, and complementary methodologies. We invite research contributions related to: petrological, structural, geochemical, and geochronological studies on rocks from exhumed and/or active settings, petrological experiments and modeling, and geophysical/geodynamic studies of subduction margins.

Co-Organized:
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

8145 Physics of magma and magma bodies [TECTONOPHYSICS]
8170 Subduction zone processes [TECTONOPHYSICS]
8178 Tectonics and magmatism [TECTONOPHYSICS]
8439 Physics and chemistry of magma bodies [VOLCANOLOGY]

Primary Convener:  Jonathan R Delph, University of Oregon, Department of Earth Sciences, Eugene, OR, United States
Conveners:  Antoine Triantafyllou, The University of Arizona, Department of Geosciences, Tucson, United States and Barbara Cäcilia Ratschbacher, University of Southern California, Los Angeles, CA, United States
Primary Liaison:  Jonathan R Delph, University of Oregon, Department of Earth Sciences, Eugene, OR, United States
 
Fore-arc Building and Destruction: a Critical Interplay Between Fluid Flow, Megathrust Strength and Tectonic Underplating (Invited) (497406)
Armel Menant1,2, Samuel Angiboust1, Taras Gerya3, Robin Lacassin1, Martine Simoes1 and Raphael Grandin1, (1)Institut de Physique du Globe de Paris, Paris, France, (2)Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany, (3)ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland
 
A Double Difference Tomography Study of the Washington Forearc: Does Siletzia Control Microseismicity in Puget Sound? (499595)
Reid Merrill1, Michael G Bostock1, Andrew J Calvert2, Simon M Peacock1 and Nikolas Christensen1, (1)University of British Columbia, Vancouver, BC, Canada, (2)Simon Fraser University, Burnaby, BC, Canada
 
Geophysical Investigation of the Tonga-Kermadec Subduction System: Do Inherited and Seamount Subduction-Influenced Lateral Variations Control Long-Term Crustal Structure? (501694)
Matthew James Funnell1, Christine Peirce1 and Adam Hackett Robinson2, (1)University of Durham, Durham, United Kingdom, (2)University of Southampton, Southampton, United Kingdom
 
Structures, kinematics and tectonic setting of the Darbut and Karamay ophiolitic mélanges in West Junggar, northwest China: implications for the Late Paleozoic evolution of the Junggar Ocean (510862)
Pan Zhang1, Guocan Wang2, Ali Polat3 and Tianyi Shen1, (1)China University of Geosciences Wuhan, School of Earth Sciences, Wuhan, China, (2)China University of Geosciences Wuhan, Wuhan, China, (3)Univ Windsor, Windsor, ON, Canada
 
Changes in andesite-dacite genesis over the 3-Myr lifespan of the Goat Rocks volcanic complex, central Cascade arc (514575)
Kellie T Wall, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States and Anita Grunder, Oregon State Univ, CEOAS, Corvallis, OR, United States
 
Transitions in the Banda Arc-Australian Continental Collision Revealed by Joint Tomography with Body and Surface Wave Data (516272)
Ping Zhang, Australian National University, Canberra, ACT, Australia and Meghan Samantha Miller, Australian National University, Research School of Earth Sciences, Canberra, Australia
 
Xenoliths and Cumulates: Insights into the Petrological, Geochemical, and Geochronological Stratigraphy of the Central Andean Arc Crust (516349)
Liannie Coral Velazquez Santana1, Claire Lousie McLeod1, Daniel Blakemore1, Barry Shaulis2 and Kenneth Brown3, (1)Miami University Oxford, Department of Geology and Environmental Earth Science, Oxford, OH, United States, (2)University of Arkansas, Fayetteville, AR, United States, (3)West Virginia University, Morgantown, WV, United States
 
Petrologic Diversity Among Early Cascade Arc Lavas in SW Washington State (521264)
Robyn J Organ1, Jeffrey H Tepper1, Wesley von Dassow2 and Tabor Reedy2, (1)University of Puget Sound, Geology, Tacoma, WA, United States, (2)Washington State Department of Natural Resources, Washington Geological Survey, Olympia, WA, United States
 
Magmatic Pyroxenes Reveal the Presence of Mafic Melts in the Plumbing System of Brothers Volcano, Kermadec Arc: Results from IODP Expedition 376 (Brothers Arc Flux) (521610)
Susanne M Straub, Lamont Doherty Earth Observato, Palisades, NY, United States and Chao Zhang, Leibniz University of Hannover, Hannover, Germany; Northwest University, Department of Geology, Xi’an, China
 
Isotopic And Geochemical Characteristics Of Mid- To Late-Miocene Continental And Oceanic Arc Volcanic And Intrusive Rocks, Central North Island And Offshore, New Zealand (544662)
Brian Cousens1, Christian Timm2 and Ashley Abraham1, (1)Carleton University, Earth Sciences, Ottawa, ON, Canada, (2)GNS Science-Institute of Geological and Nuclear Sciences Ltd, Lower Hutt, New Zealand
 
Upwelling and emplacement of ultramafic bodies within an ancient accretionary prism at La Cabaña massif, south-central Chile. (546184)
Jorge Sanhueza1,2, Gonzalo A Yanez2,3, Jose Ignacio Maringue1, Ronny Figueroa1,4, Fernando Barra2,5 and Esteban Saez3, (1)Pontifical Catholic University of Chile, Ingeniería Estructural y Geotécnica, Santiago, Chile, (2)Millenium Nucleus for Metal Tracing Along Subduction, University of Chile, Santiago, Chile, (3)Pontifical Catholic University of Chile, Deparment of Structural and Geotechnical Engineering, Santiago, Chile, (4)Andean Geothermal Center of Excellence (CEGA), Santiago, Chile, (5)University of Chile, Department of Geology and Andean Geothermal Center of Excellence (CEGA), Santiago, Chile
 
Anomalous arc volcanism and subduction of linear topographic features (549841)
Claudia Maria Adam, Kansas State University, Geology, Manhattan, KS, United States, Mie Ichihara, Univ Tokyo, Tokyo, Japan, Valerie Vidal, Ecole Normale Superieure, Lyon, France and Pablo Grosse, Fondacion Miguel Lillo, CONICET, Tucuman, Argentina
 
Genesis of Forearc Basalts from Boring Volcanic Field, Cascadia (557515)
Yin Zhang, Tallahassee, FL, United States and Vincent J M Salters, NHMFL, Tallahassee, FL, United States
 
The Northcraft, Tukwila, and Rattlesnake Mountain Formations: Petrology of the Earliest Cascade Volcanic Units in Washington and their Implications for the Evolution of the Cascade Arc (566058)
Louisa Cryan and Jeffrey H Tepper, University of Puget Sound, Geology, Tacoma, WA, United States
 
Stratigraphy and Tectonics of the Continental Norfolk Ridge, SW Pacific Ocean (566647)
Julien Collot, Geological Survey of New Caledonia - SGNC/DIMENC, Nouméa, New Caledonia, Walter R Roest, Ifremer Centre Brest, Plouzane, France, Rupert Sutherland, Victoria University of Wellington, Wellington, New Zealand, Martin Patriat, IFREMER, Plouzané, France, Samuel Etienne, ADECAL Technopole / Geological Survey of New Caledonia, Nouméa, New Caledonia, Aurelien Bordenave, Geological Survey of New Caledonia, Noumea, New Caledonia, Boris Marcaillou, Géoazur - Université Nice Sophia Antipolis, Valbonne, France, Schnurle Philippe, Ifremer, Plouzané, France, Caroline Juan, DIMENC, Geological Survey of New Caledonia, Nouméa, New Caledonia, Daniel H N Barker, GNS Science, Lower Hutt, New Zealand, Wanda Rose Stratford, GNS Science-Institute of Geological and Nuclear Sciences Ltd, Lower Hutt, New Zealand, Simon Williams, University of Sydney, Sydney, NSW, Australia, Sylvie Wolf, Univ Paris 06 CNRS UMR7193, Sorbonne Univ. ISTEP, Paris, France, Camille Noël Clerc, Université de la Nouvelle-Calédonie, Institut des Sciences Exactes et Appliquées, Nouméa, New Caledonia and Martin Crundwell, GNS Science, Paleontology, Lower Hutt, New Zealand
 
Geometric control of subducted Nazca plate on the Central Andes deformation styles (568308)
Matias Pena, Universidad de Chile, Departamento de geologia, Santiago de Chile, Chile; Universidad Mayor, Escuela de Geologia, Santiago, Chile, Andrei Maksymowicz, University of Chile, FCFM - Department of Geophysics, Santiago, Chile and Sergio Ruiz, Universidad de Chile, Departamento de Geofísica, Facultad de Ciencias Físicas y Matemáticas, Santiago, Chile
 
Seismicity of the Andaman-Sumatra Subduction Zone: role of fracture zones and lithospheric age (582938)
Jensen Jacob, CSIR-National Institute of Oceanography, Council of Scientific and Industrial Research, Panjim, India, Jerome Dyment, Université de Paris, Institut de physique du globe de Paris, CNRS, F-75005 Paris, France, Paris, France and Pawan Dewangan, CSIR - National Institute of Oceanography, Goa, India
 
Geochronology and geochemistry of silicic intercalations within the Erlangping basaltic unit and their tectonic implications for the Qinling orogenic belt, central China (590072)
Pan Hu1, Yuanbao Wu2, Wenxiang Zhang2, Jie Li2 and Yu He1, (1)China University of Geosciences, School of Earth Sciences, Wuhan, China, (2)China University of Geosciences, Wuhan, China
 
Relating topography to Quaternary volcanism and crustal structure within the Cascades Arc (Invited) (590897)
Daniel O'Hara, University of Oregon, Eugene, OR, United States, Leif Karlstrom, University of Oregon, Department of Earth Sciences, Eugene, OR, United States and David W Ramsey, USGS, Vancouver, WA, United States
 
Osmium Isotope Constraints on Tectonic Evolution of the Mantle Lithosphere: Evidence From Lunar Crater Peridotite Xenoliths, Nevada, USA (592308)
Geneva Nguyen, Pearland, TX, Vatican City and Alan D Brandon, University of Houston, Houston, TX, United States
 
Petrology of the Eocene Goble Volcanics, Southwest Washington: an Early Phase of the Cascade Arc. (600432)
Clara G Phipps, University of Puget Sound, Tacoma, WA, United States and Jeffrey H Tepper, University of Puget Sound, Geology, Tacoma, WA, United States
 
The super-hydrous component of the Mt. Shasta plumbing system (604417)
Mike Krawczynski, Washington University in St Louis, St. Louis, MO, United States and Timothy L Grove, Massachusetts Institute of Technology, Earth, Atmospheric & Planetary Sciences, Cambridge, MA, United States
 
Geochronology, geochemistry, and thermobarometry of Eocene plutons from central Mexico (614678)
Carlos A. Quiroz-Prada, Teresa Orozco-Esquivel, Gilles Levresse and Jose Alvarez-Cardona, Universidad Nacional Autonoma de Mexico, Centro de Geociencias, Querétaro, Mexico
 
Wet and Deep vs. Dry and Shallow: Global Fractionation Conditions in Volcanic Arcs (619759)
Benjamin Z Klein, Boston College, Chestnut Hill, MA, United States, Oliver E Jagoutz, Massachusetts Institute of Technology, Cambridge, MA, United States, Max W Schmidt, ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland and Nico Kueter, Geophysical Laboratory, Carnegie Institution for Science, Washington D.C., USA, United States
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