T017
Subduction Top to Bottom (ST2B) — Origin and Evolution of Magmatic Arcs

Session ID#: 161936

Session Description:
The ST2B pursuit highlights and fosters multidisciplinary research on subduction margins, gathering scientists representing the full array of approaches and perspectives. In this session, we focus attention on factors and processes leading to arc magmatism, both modern and ancient, aimed at refining our understanding of primary forcing factors (including structural controls) for the production and positioning of arcs and exploring the great diversity in arc systems. We hope to sponsor discussion of all aspects of arc evolution, including but not limited to the impact of forearc dynamics, the nature of the subduction interface, slab devolatilization and melting, the physical and chemical characteristics of slab/sediment-derived “fluids,” mantle wedge thermal, rheological, and chemical evolution, the role of diapirs, and whole-margin volatiles cycling. We hope to stimulate discussion among geodynamic modelers, geophysicists, geochemists, and experimentalists, and to engage those investigating ancient arc magmatism and Earth’s long-term history of subduction.
Index Terms:

1031 Subduction zone processes [GEOCHEMISTRY]
1037 Magma genesis and partial melting [GEOCHEMISTRY]
8045 Role of fluids [STRUCTURAL GEOLOGY]
8104 Continental margins: convergent [TECTONOPHYSICS]

Primary Convener:  Gray E Bebout, Lehigh University, Dept. Earth and Environmental Sciences, Bethlehem, PA, United States
Conveners:  David William Scholl, University of Alaska Fairbanks, Geology and Geophysics, Fairbanks, AK, United States, Robert J Stern, University of Texas at Dallas, Geosciences, Richardson, TX, United States and Ikuko Wada, University of Minnesota Twin Cities, Earth and Environmental Sciences, Minneapolis, United States
 
Patterns of Quaternary volcanism in the Cascades arc imply coupled magmatic and Earth surface processes (Invited) (1041566)
Leif Karlstrom1, Daniel O'Hara2 and Nathaniel Klema1, (1)University of Oregon, Department of Earth Sciences, Eugene, OR, United States, (2)Vrije Universiteit Brussel, Department of Geography, Brussels, Belgium
 
If I Could Turn Back Time: A New Method to Map the Evolutionary Pathways of Igneous Rocks (Invited) (1042336)
Christy B. Till, Arizona State University, Tempe, AZ, United States
 
Dynamic control of slab geometry at a flat slab to steep-angle subduction transition zone (1069247)
Xiaowen Liu and Russell Pysklywec, University of Toronto, Department of Earth Sciences, Toronto, ON, Canada
 
Magma production beneath subduction zones: Using numerical models to evaluate melt production under batch and fractional melt conditions (1074340)
Francesca Burkett, Southern Illinois University Carbondale, Carbondale, IL, United States and James Andrew Conder, Southern Illinois University Carbondale, Geology, Carbondale, IL, United States
 
Geometrical Relations Between Slab Dip and the Location of Volcanic Arcs and Back-Arc Spreading Centers (1078537)
Laurent Montesi, University of Maryland College Park, Department of Geology, College Park, United States, Goeun Ha, University of Maryland College Park, Department of Geology, College Park, MD, United States and Wenlu Zhu, University of Maryland, College Park, MD, United States
 
Focused Arc Volcanoes Formed by Melt Focusing: A Case Study of Northeast Japan Subduction Zone (1084633)
Soohwan Yoo and Changyeol Lee, Yonsei University, Department of Earth System Sciences, Seoul, South Korea
 
Slab to back-arc to arc: fluid and melt pathways through the mantle wedge beneath the Lesser Antilles from seismic attenuation tomography (1085702)
Stephen Paul Hicks1, Lidong Bie2,3, Catherine Rychert4, Nicholas Harmon5, Saskia D B Goes1, Andreas Rietbrock6, Songqiao Shawn Wei7, Jenny Collier1, Timothy Henstock8, Lloyd Lynch9, Julie Prytulak10, Colin Macpherson11, David Schlaphorst12, Jamie Wilkinson1, Jonathan Blundy13, George Cooper14, Richard Gareth Davy1 and Michael Kendall15, (1)Imperial College London, Department of Earth Science and Engineering, London, United Kingdom, (2)Karlsruhe Institute of Technology, Geophysical Institute (GPI), Karlsruhe, Germany, (3)University of East Anglia, Norwich, United Kingdom, (4)Woods Hole Oceanographic Institution, Ocean and Earth Science, Woods Hole, United States, (5)University of Southampton, Ocean and Earth Science, Southampton, United Kingdom, (6)Karlsruhe Institute of Technology, Karlsruhe, Germany, (7)Washington University in St Louis, St. Louis, United States, (8)University of Southampton, National Oceanography Centre, Southampton, United Kingdom, (9)University of the West Indies, Seismic research Centre, St. Augustine, Trinidad and Tobago, (10)Imperial College London, London, United Kingdom, (11)University of Durham, Department of Earth Sciences, Durham, United Kingdom, (12)University of Bristol, School of Earth Sciences, Bristol, United Kingdom, (13)University of Oxford, Earth Sciences, Oxford, United Kingdom, (14)Cardiff University, School of Earth and Environmental Sciences, Cardiff, United Kingdom, (15)University of Oxford, Department of Earth Sciences, Oxford, United Kingdom
 
Are Volatiles from the Pampean Flat Slab Fracking the Crust? Evidence from an Enhanced Seismicity Catalogue (1087046)
Steven W Roecker, Rensselaer Polytechnic Inst, Earth & Environmental Sciences, Troy, NY, United States, Ariane Maharaj, Rensselaer Polytechnic Institute, Earth and Environmental Sciences, Troy, NY, United States, Patricia M Alvarado, National University of San Juan, Geophysics and Astronomy, San Juan, Argentina, Susan L Beck, University of Arizona, Tucson, United States and Diana Comte, University of Chile, Santiago, Chile
 
Phase Equilibria of Ultramafic-Rich and Sediment-Rich Mélange Lithologies in Cold to Hot Subduction Zones – Implications for Deep Nitrogen Cycling (1099528)
Anna M Rebaza, University of Arizona, Tucson, AZ, United States, Ananya Mallik, University of Arizona, Geosciences, Tucson, AZ, United States and Emily H. G. Cooperdock, University of Southern California, Department of Earth Sciences, Los Angeles, United States
 
Magmatic Differentiation vs Contamination in Arc Plutons: A new in situ perspective based on Sr isotopes in plagioclase from Adamello (Italy) (1104159)
Manuel Pimenta Silva1, Andrea Giuliani1, Urs Schaltegger2, Blair Schoene3, Peter Ulmer1 and Othmar Müntener4, (1)ETH Zürich, Institute of Geochemistry and Petrology, Zurich, Switzerland, (2)University of Geneva, Geneva, Switzerland, (3)Princeton University, Department of Geosciences, Princeton, United States, (4)University of Lausanne, Institute of Earth Sciences, Lausanne, Switzerland
 
3D Modeling of Dynamics in the Hikurangi-Kermadec Subduction System (1111411)
Daniel Douglas, New Mexico Institute of Mining and Technology, Socorro, NM, United States, John B Naliboff, New Mexico Institute of Mining and Technology, Earth and Environmental Science, Socorro, United States, Menno Fraters, UC Davis, Davis, United States, Donna Eberhart-Phillips, University of California Davis, Earth and Planetary Science, Davis, CA, United States, Susan M Ellis, GNS Science, Lower Hutt, New Zealand and Juliane Dannberg, University of Florida, Department of Geological Sciences, Gainesville, United States
 
Cold Mélange Diapirs or Active Mantle Wedge Metasomatism? Investigating the Source Region of Colombia’s Mantle Wedge Earthquakes (1112414)
Sungwon Cho1, Brandon Bishop2, Linda M Warren1, Lillian Soto-Cordero2, German A Prieto3, Viviana Dionicio4 and Patricia Pedraza5, (1)Saint Louis University Main Campus, Department of Earth and Atmospheric Sciences, Saint Louis, United States, (2)Saint Louis University Main Campus, Department of Earth and Atmospheric Sciences, Saint Louis, MO, United States, (3)Universidad Nacional de Colombia, Departamento de Geociencias, Bogota, Colombia, (4)Servicio Geológico Colombiano, Red Sismológica Nacional de Colombia, Bogotá, Colombia, (5)Servicio Geológico Colombiano, Bogotá, Red Sismológica Nacional de Colombia, Bogotá D.C., Colombia
 
Seismic Attenuation of the Alaska Peninsula Section of the Alaska-Aleutian Subduction Zone (1114790)
Zhuoran Zhang, Michigan State University, Department of Earth and Environmental Sciences, East Lansing, MI, United States and Songqiao Shawn Wei, Michigan State University, Department of Earth and Environmental Sciences, East Lansing, United States
 
Love Wave Phase and Shear Velocity Models of the Alaskan Subduction Zone (1117448)
Cristo Ramirez1, Aubreya Nicole Adams2, Shane Knopp3, Tom Richards3 and Alexa Trubiano4, (1)Colgate University, Hamilton, NY, United States, (2)Washington University in St Louis, St. Louis, MO, United States, (3)Colgate University, Hamilton, United States, (4)Colgate University, Geology, Hamilton, United States
 
Plate tectonic controls on subduction arc magmatism from ancient and recent western Pacific arc geochemistry (1124879)
Tsung-Jui Wu1, Jonny Wu2, Lingling Chen3, Yangming Wu4, Mikyoung Jun3 and Moloud Rahimzadeh Bajgiran1, (1)University of Houston, Department of Earth and Atmospheric Sciences, Houston, TX, United States, (2)University of Houston, Department of Earth and Atmospheric Sciences, Houston, United States, (3)University of Houston, Department of Mathematics, Houston, TX, United States, (4)Sun Yat-Sen University, School of Earth Sciences and Engineering, Guangzhou, China
 
The Metamorphic Fabrics in the Taroko High-strain zone of Taiwan Mountain Belt: A Regional-scale, Left-lateral Shear Zone that Accommodated Highly Oblique Plate Convergence in the Plio-Pleistocene (1135407)
Gong-Ruei Ho1, Jian-Cheng Lee1, Timothy B Byrne2 and Yuli Exhumation Study Team (YES Team), (1)Academia Sinica, Institute of Earth Sciences, Taipei, Taiwan, (2)University of Connecticut, Department of Geosciences, Storrs, United States
 
Characterizing complex metamorphism and deformation processes of high-PT rocks occurred in exhumed subduction channel: a case study of the Yuli Belt in eastern Taiwan (1136283)
Jian-Cheng Lee1, Gong-Ruei Ho1, Chin-Ho Tsai2, Yuan-His Lee3, En-Chao Yeh4, Wei Lo5, Chi-Hsuan Chen6, Timothy B Byrne7 and the YES team (Yuli Exhumation Study team), (1)Academia Sinica, Institute of Earth Sciences, Taipei, Taiwan, (2)National Dong Hwa University, Hualien County, Taiwan, (3)CCU National Chung Cheng University, Chiayi County, Taiwan, (4)National Taiwan Normal Univ., Department of Earth Sciences, Taipei, Taiwan, (5)NTUT, Institute of Mineral Resources Engineering, Taipei, Taiwan, (6)Central Geological Survey, Taipei, Taiwan, (7)University of Connecticut, Department of Geosciences, Storrs, United States
 
Compositional Variation in Melts derived from Metabasalts in Subducted Oceanic Slabs: Constraints from Forward Petrological Modeling (1136298)
Wentao Cao, SUNY at Fredonia, Fredonia, NY, United States, Richard Palin, University of Oxford, Department of Earth Sciences, Oxford, United Kingdom and David Hernández-Uribe, University of Illinois at Chicago, Chicago, United States
 
Improved Estimates of Crustal Magmatic Storage in the Alaska-Aleutian Arc Through Seismic Receiver Functions (1138176)
Helen A Janiszewski, University of Hawai`i at Mānoa, Department of Earth Sciences, Honolulu, United States, Lara S Wagner, Carnegie Institution for Science, Department of Terrestrial Magnetism, Washington, United States, Diana C. Roman, Carnegie Institution for Science, Department of Terrestrial Magnetism, Washington, DC, United States, Madeleine Tan, University of Michigan, Department of Earth and Environmental Sciences, Ann Arbor, MI, United States and Daniel Evan Portner, Arizona State University, School of Earth and Space Exploration, Tempe, United States
 
Investigating the Composition of Magmas Produced during Partial Melting of Arclogite (1138538)
Emilie Bowman, University of Arizona, Department of Geosciences, Tucson, AZ, United States, Ananya Mallik, University of Arizona, Geosciences, Tucson, AZ, United States and Mihai Nicolae Ducea, Univ Arizona, Tucson, AZ, United States
 
Use of contact metamorphic aureoles to estimate magma flux rates (1141267)
Simon Richard Wallis, The University of Tokyo, Bunkyo-ku, Japan, Ken Yamaoka, The University of Tokyo, Tokyo, Japan, Catherine Annen, Academy of Sciences of the Czech Republic, Prague, Czech Republic and Akira Miyake, Aichi University of Education, Earth Sciences, Kariya, Japan
 
Collaborative Research: Constraining the Thermal Structure of Fossil Subduction Plate Interfaces Through Combining Petrology and Geodynamics (1158674)
Ikuko Wada, University of Minnesota Twin Cities, Earth and Environmental Sciences, Minneapolis, United States, Xin Zhou, University of Minnesota Twin Cities, Department of Earth Sciences, Minneapolis, MN, United States, Sarah Penniston-Dorland, University of Maryland, College Park, MD, United States, Kayleigh M M Harvey, University of Maryland College Park, College Park, MD, United States, Andrew Steele, Carnegie Institution for Science of Washington, Earth and Planets Laboratory, Washington, United States, Emma Bullock, Organization Not Listed, Washington, United States, Natalie H. Raia, University of Texas at Austin, Austin, United States, Besim Dragovic, University of South Carolina, Columbia, SC, United States and Peter E van Keken, Carnegie Institution for Science, Earth and Planets Laboratory, Washington, DC, United States
 
Elucidating parameters governing elemental transfer during seafloor alteration: Application of machine-learning based Protolith Reconstruction Model (PRM) to seafloor altered basalt, the South and Northwest Pacific regions. (1159203)
Satoshi Matsuno, Masaoki Uno and Atsushi Okamoto, Tohoku University, Graduate School of Environmental Studies, Sendai, Japan
 
What is Magnetic in the Mantle Wedge Beneath Island Arcs? (1161070)
Sarah A Friedman, Georgia Southern University, Geology and Geograhy, Statesboro, United States, Eric C. Ferre, University of Louisiana at Lafayette, School of Geosciences, Lafayette, LA, United States, Fatima Martin-Hernandez, Instituto de Geociencias (CSIC-UCM), Madrid, Spain, Joshua M Feinberg, University of Minnesota, Institute for Rock Magnetism, Department of Earth & Environmental Sciences, Minneapolis, MN, United States, Shoji Arai, Kanazawa Univ, Kanazawa Ishikawa, Japan and Dmitri A Ionov, University of Montpellier II, Montpellier Cedex 05, France
 
The Isotopic Record of Waning Subduction - an Example from the Antarctic Peninsula (1162636)
Joaquin Bastias, Trinity College Dublin, Dublin, Ireland, David Chew, TCD, Dublin, Ireland, Teal R Riley, NERC British Antarctic Survey, Cambridge, United Kingdom, Richard Spikings, Univerisity of Geneva, Geneva, Switzerland, Massimo Chiaradia, University of Geneva, Geneva, Switzerland and Anne Grunow, Byrd Park Research Ctr, Columbus, United States
 
Cretaceous Magmatism in the Antarctic Peninsula and its Tectonic Implications (1167159)
Joaquin Bastias1, Teal R Riley2, Richard Spikings3, David Chew4, Anne Grunow5, Alexey Ulianov6, Alex Burton-Johnson2 and Massimo Chiaradia3, (1)Trinity College Dublin, Dublin, Ireland, (2)NERC British Antarctic Survey, Cambridge, United Kingdom, (3)University of Geneva, Geneva, Switzerland, (4)TCD, Dublin, Ireland, (5)Byrd Park Research Ctr, Columbus, United States, (6)University of Lausanne, Lausanne, Switzerland
 
Role of Mélange Formation on the Devolatilization, Melting, Rheology and Dynamics of the Slab Interface (1180073)
Benjamin Z Klein, University of Lausanne, Institute of Earth Sciences, Lausanne, Switzerland and Mark D Behn, Boston College, Earth and Environmental Sciences, Chestnut Hill, United States
 
Lithospheric Controls on the Distribution of Porphyry Copper Deposits (1181810)
Simon Stephenson, University of Oxford, Oxford, United Kingdom, Mark J. Hoggard, Australian National University, Research School of Earth Sciences, Canberra, Australia, Marcus Haynes, Geoscience Australia, Canberra, Australia, Karol Czarnota, Geoscience Australia, Canberra, ACT, Australia and Krystian Czado, Geological Survey of New South Wales, Maitland, Australia
 
Spatio-temporal Imaging of Mount St. Helens Magmatic System using Earthquake Waveforms (1189657)
Jyoti Behura, Seismic Science LLC, Littleton, CO, United States; Colorado school of Mines, Department of Geophysics, Golden, United States
 
Thermodynamic and Volcanic Gas Geochemical Insights into Volatile Release During Subduction Along the Hikurangi Margin, New Zealand (1193625)
Gabe S Epstein1, Gray E Bebout1, Bruce W Christenson2, Hirochika Sumino3, Ikuko Wada4, Cynthia A Werner5 and David R Hilton6, (1)Lehigh University, Dept. Earth and Environmental Sciences, Bethlehem, PA, United States, (2)GNS Science-Institute of Geological and Nuclear Sciences Ltd, National Isotope Centre, Lower Hutt, New Zealand, (3)Geochemical Research Center, Graduate School of Science, University of Tokyo, Tokyo, Japan, (4)Department of Earth Sciences, Minneapolis, United States, (5)Research Geologist, New Plymouth, New Zealand, (6)Univ California San Diego, La Jolla, United States
 
A Comparison of Surface Heat Flow Interpolations Near Subduction Zones (1199780)
Buchanan Kerswell, Boise State University, Boise, United States and Matthew J Kohn, Boise State University, Boise, ID, United States
 
Melting during decompression of deeply-subducted continental crust: multiple mechanisms and contrasting melt compositions (1200246)
Peng Feng1, Lu Wang1, Michael Brown2 and Tim E Johnson3, (1)China University of Geosciences, Wuhan, State Key Laboratory of Geological Processes and Mineral Resources, and Center for Global Tectonics, School of Earth Sciences, Wuhan, China, (2)University of Maryland College Park, Laboratory for Crustal Petrology, Department of Geology, College Park, MD, United States, (3)Curtin University, School of Earth and Planetary Sciences, The Institute for Geoscience Research (TIGeR), Perth, Australia
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