T21G:
Subduction Top to Bottom-2 V Posters


Submit an Abstract to this Session


Session ID#: 56964

Session Description:
From top-to-bottom, many geological, geophysical, petrologic, geochemical and theoretical advances have been made in understanding the subduction zone processes and dynamics explored in 1996 in AGU Geophysical Monograph 96, “Subduction Top to Bottom”. This session, and a related Themed Issue in the online journal GEOSPHERE (http://www.geosociety.org/gsatoday/science/G354A/article.htm), are intended to revisit the topics explored 22 years ago in Monograph 96—reassessing them in light of new advances and discoveries in subduction zone research. We invite the broadest possible thematic range of contributions, including subduction-related hazards (volcanic eruptions, earthquakes and tsunamis) and resources.
Primary Convener:  David William Scholl, University of Alaska Fairbanks, Geosciences, Fairbanks, United States
Conveners:  Gray E Bebout, Lehigh University, Dept. Earth and Environmental Sciences, Bethlehem, PA, United States and Laura M Wallace, University of Texas at Austin, Institute for Geophysics, Austin, United States
Primary Liaison:  David William Scholl, University of Alaska Fairbanks, Geosciences, Fairbanks, United States
Chairs:  Laura M Wallace, University of Texas at Austin, Institute for Geophysics, Austin, United States and Robert J Stern, University of Texas at Dallas, Geosciences, Richardson, TX, United States
OSPA Liaison:  Gray E Bebout, Lehigh University, Dept. Earth and Environmental Sciences, Bethlehem, PA, United States
Index Terms:

8104 Continental margins: convergent [TECTONOPHYSICS]
8170 Subduction zone processes [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Ce-anomalies, elevated Ba/Th, Metasomatic Orthopyroxenite, and variably Depleted Indian-Type MORB Mantle in Mafic and Ultramafic Xenoliths from Kharchinsky Volcano, Kamchatka (393306)
Max T. Siegrist1, Gene Yogodzinski2, Michael Bizimis2 and Tatiana Churikova3, (1)University of South Carolina Columbia, Columbia, SC, United States, (2)University of South Carolina, School of Earth-Ocean-Environment, Columbia, United States, (3)Institute of Volcanology and Seismology FEB RAS, Laboratory of Petrology, Geochemistry and Mineralogy, Petropavlovsk-Kamchatsky, Russia
Deformation of metabasalts in megathrust shear zones exposed on Kyushu Island, Japan. (403711)
Christopher J Tulley, Cardiff University, School of Earth and Ocean Sciences, Cardiff, CF24, United Kingdom, Ake Fagereng, Cardiff University, Cardiff, CF24, United Kingdom and Kohtaro Ujiie, University of Tsukuba, Tsukuba, Japan
Ion Microprobe Depth Profile Analysis of Micron-Scale Metamorphic Rims on Detrital Zircons from the Pelona Orocopia Rand Schist (467414)
Elizabeth Anne Langdon-Lassagne1, Marty Grove2, Benjamin Floyd DeJarnatt1, Jeremy K Hourigan3 and Carl E Jacobson4, (1)University of California Santa Cruz, Santa Cruz, CA, United States, (2)Stanford University, Earth and Planetary Sciences, Stanford, United States, (3)UC Santa Cruz, Santa Cruz, CA, United States, (4)Iowa State Univ, Ames, IA, United States
Depth-profile laser-ablation split-stream ICP-MS analysis of metamorphic zircon rims from the Orocopia Schist: Implications for the chronology of erosion and underplating during flat-slab subduction. (457002)
Benjamin Floyd DeJarnatt, University of California Santa Cruz, Santa Cruz, CA, United States, Jeremy K Hourigan, UC Santa Cruz, Santa Cruz, CA, United States, Carl E Jacobson, Iowa State Univ, Ames, IA, United States, Marty Grove, Stanford University, Earth and Planetary Sciences, Stanford, United States and Gordon B Haxel, USGS, Flagstaff, AZ, United States
Petrology and Geochemistry of Lawsonite-bearing Metabasalt and Metagabbro in the Sivrihisar Massif, Turkey (355619)
Patricia Kang, University of Minnesota Twin Cities, Minneapolis, MN, United States, Donna L Whitney, University of Minnesota Twin Cities, Department of Earth & Environmental Sciences, Minneapolis, United States and Katherine F Fornash, Ohio University, Department of Geological Sciences, Athens, OH, United States
Implications of Subduction Obliquity to the Inferences of Seismic Anisotropy in the Mantle Wedge (441433)
Lindsey M Kenyon, University of Minnesota Twin Cities, Minneapolis, United States and Ikuko Wada, University of Minnesota, Department of Earth and Environmental Sciences, Minneapolis, United States
Hydrous mantle melting near the base of the mantle wedge: How does the addition of a slab component change the first melts of vapor-saturated lherzolite? (445143)
Timothy L Grove, Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, United States and Christy B Till, Arizona State Univeristy, Tempe, United States
A Global View On Arc-Trench Connectivity And Andesite Petrogenesis (433931)
Susanne M Straub, Lamont-Doherty Earth Observatory, Palisades, United States and Arturo Gomez-Tuena, Universidad Nacional Autónoma de México, Instituto de Geologia, Ciudad de México, Mexico
Tectonic Control on Slab-derived Sediment Contributions to the Northern Volcanic Zone of Colombia. (452124)
Carlos Errázuriz-Henao, Universidad Nacional de Colombia, Medellín, Colombia, Arturo Gomez-Tuena, Universidad Nacional Autónoma de México, Instituto de Geologia, Ciudad de México, Mexico, Marion Weber, Universidad Nacional de Colombia, Medellin, Colombia and Mattia Parolari, Universidad Nacional Autónoma de México, Centro de Geociencias, Querétaro, Mexico
Compositional variations in lavas of the Klyuchevskaya Volcanic Group (Kamchatka) (353873)
Tatiana Churikova1,2, Boris Gordeychik2,3, Gleb Flerov1 and Gerhard Wörner2, (1)Institute of Volcanology and Seismology FEB RAS, Laboratory of Petrology, Geochemistry and Mineralogy, Petropavlovsk-Kamchatsky, Russia, (2)Georg-August-Universität Göttingen, GZG, Abteilung Geochemie, Göttingen, Germany, (3)Institute of Experimental Mineralogy RAS, Laboratory of Thermodynamics of Minerals, Chernogolovka, Russia
Effects of Early Cretaceous Plutonism along the Atacama Fault System, northern Chile: The Relationship between Magmatism and Deformation (347144)
Nikki M Seymour1,2, John Selwyn Singleton2, Rodrigo Gomila3 and Daniel F Stockli4, (1)Occidental College, Department of Geology, Los Angeles, United States, (2)Colorado State University, Department of Geosciences, Fort Collins, CO, United States, (3)Università di Genova, Genova, Italy, (4)University of Texas at Austin, Jackson School of Geosciences, Austin, United States
Microstructural and Magnetic Characterization of a Syn-Magmatic Shear Zone, Sierra Nevada Batholith, California (457074)
Sarah F Trevino, University of Wisconsin Madison, Madison, WI, United States, Basil Tikoff, Univ Wisconsin, Madison, United States, Claire Harrigan, Boise State University, Boise, ID, United States and Mark David Schmitz, Boise State University, Department of Geosciences, Boise, United States
In search for the missing arc root of the Southern California Batholith: investigating the P-T-t evolution of upper mantle xenoliths from the Colorado Plateau Transition Zone (382470)
Ojashvi Rautela, Macalester College, Geology, Saint Paul, MN, United States, Alan D Chapman, Macalester College, Geology, St. Paul, MN, United States and Jessie E. Shields, California State University Fresno, Earth & Environmental Sciences Dept., Fresno, CA, United States
GEOLOGICAL CONSTRAINTS ON ~30 MILLION YEARS OF DIACHRONOUS MAGMATISM ALONG AN ARC-TRANSFORM JUNCTION, WRANGELL ARC, SOUTHERN ALASKA (370039)
Matthew E Brueseke1, Jeffrey M Trop2, Jeff Benowitz3, Paul W Layer3, Kailyn N Davis3, Beth K Morter4, Sam E Berkelhammer4 and Maridee Weber5, (1)Kansas State University, Department of Geology, Manhattan, KS, United States, (2)Bucknell University, Geology & Environmental Sciences, Lewisburg, PA, United States, (3)University of Alaska Fairbanks, Geophysical Institute, Fairbanks, AK, United States, (4)Kansas State University, Geology, Manhattan, KS, United States, (5)Kansas State University, Geology, Manhattan, United States
Geochronological and geochemical evidence of continental crust "relamination" in the origin of intermediate arc magmas (423902)
Arturo Gomez-Tuena1, José Guadalupe Cavazos-Tovar2, Mattia Parolari2, Susanne M Straub3 and Ramón Espinasa-Pereña4, (1)Universidad Nacional Autónoma de México, Instituto de Geologia, Ciudad de México, Mexico, (2)Universidad Nacional Autónoma de México, Centro de Geociencias, Querétaro, Mexico, (3)Lamont-Doherty Earth Observatory, Palisades, United States, (4)Instituto de Geologia, Universidad Nacional Autónoma de México, Mexico City, Mexico
Bulldozing of Continental Mantle Lithosphere by Flat-Slab Subduction: Implications for Upper Plate Deformation and Arc Magmatism (399833)
Gary J Axen, New Mexico Institute of Mining and Technology, Earth and Environmental Science, Socorro, NM, United States, Jolante van Wijk, New Mexico Institute of Mining and Technology, Earth & Environmental Science, Socorro, United States and Claire A Currie, University of Alberta, Department of Physics, Edmonton, AB, Canada
P-T-t-d Paths from Lithospheric Shear Zones During Subduction: Links Between Deformation, Magmatism and Metamorphism (377772)
Silvio Seno1,2, Matteo Maino1, Leonardo Casini3, Antonio Langone4 and Filippo Luca Schenker2, (1)University of Pavia, Department of Earth and Environmental Sciences, Pavia, Italy, (2)University of Applied Sciences and Arts of Southern Switzerland (SUPSI), Institute of Earth Sciences, Lugano - Canobbio, Switzerland, (3)University of Sassari, DISBEG, Sassari, Italy, (4)CNR - IGG - Pavia, Pavia, Italy
Construction of Continental Crust in the Southwest Caribbean Sea: a Case Study of the Bay Islands, Honduras. (404749)
Nikita Kepezhinskas, University of Florida, Department of Geological Sciences, Ft Walton Beach, FL, United States, David A Foster, UF, Geological Sciences, Gainesville, FL, United States, Pavel Kepezhinskas, Self Employed, Washington, DC, United States and George D Kamenov, University of Florida, Department of Geological Sciences, Gainesville, FL, United States
New Insight on the Rotation and Deep Crustal Structure of Java and the Lesser Sunda Islands Based on Arc Volcano Distribution (370591)
Harisma Andikagumi1, Colin Macpherson2 and Kenneth J W McCaffrey2, (1)University of Durham, Durham, United Kingdom, (2)University of Durham, Department of Earth Sciences, Durham, United Kingdom
The Role of Arc Migration in Cordilleran Orogenic Cyclicity (Invited) (344715)
James Chapman, University of Wyoming, Geology and Geophysics, Laramie, WY, United States
Subduction Zones Migration Led by Brittle-Viscous Deformation Throughout The Lithosphere (450441)
Jessica Munch, ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland and Taras Gerya, ETH Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland
Deciphering the controlling mechanism for Andean mountain building in Central Chile: Preliminary Results (374904)
Diana Comte, AMTC-DGF, FCFM, Universidad de Chile, Santiago, Chile; Universidad de Chile, DGF - FCFM, Santiago, Chile, Marcelo Farías, Universidad de Chile, Departamento de Geología, Santiago, Chile, Andrea Paz Navarro-Aránguiz, Departmeto de Geología, AMTC-FCFM Universidad de Chile, Santiago, Chile; Depto. de Geofísica, FCFM Universidad de Chile, Santiago, Chile, Steven W Roecker, Rensselaer Polytechnic Inst, Earth & Environmental Sciences, Troy, United States and Andreas Rietbrock, Karlsruhe Institute of Technology, Geophysical Institute (GPI), Karlsruhe, Germany
Subduction Diamonds Twenty Years After (356907)
Pavel Kepezhinskas, PNK GeoScience, Tampa, FL, United States and Nikita Kepezhinskas, University of Florida, Department of Geological Sciences, Ft Walton Beach, FL, United States
Probing the origins of large calderas in Kamchatka: are short-lived large silicic systems in continental arcs produced by periodic delamination of the lower crust? (464112)
Dylan Colon, University of Oregon, Earth Sciences, Eugene, OR, United States, Ilya Bindeman, University of Oregon, Department of Earth Sciences, Eugene, OR, United States and Taras Gerya, ETH Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland
Fluorine concentrations in geothermal springs as an indicator of rheological weakening promoting active deformation in Western North America (464903)
William E Holt1, Alireza Bahadori2, Jeonghyeop Kim3, Troy Rasbury1, Weisen Shen4 and Julia Grossman5, (1)Stony Brook University, Department of Geosciences, Stony Brook, NY, United States, (2)Stony Brook University, Stony Brook, United States, (3)Korea Institute of Geoscience and Mineral Resources, Daejeon, South Korea, (4)Stony Brook University, Department of Geosciences, Stony Brook, United States, (5)University of Washington Seattle Campus, Earth and Space Sciences, Seattle, United States

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