T032:
Role of Pre-Existing Structures on Plate Deformation in Continental Rifting and Subduction Zones





Session ID#: 27474

Session Description:
This session seeks to discuss the current state of knowledge of plate deformation in continental rifting and subduction zones as affected by the presence of pre-existing structures. Studies have shown how strain is accommodated along pre-existing structures, and how geological hazards are localized where the older structures are present. Other studies have shown how pre-existing structures are not important in the formation of new faults. Understanding the effects of these older structures are important to comprehend seismic hazards, plate kinematics, initiation and evolution of continental rifting, subduction initiation, and strain partitioning in subduction zones. We seek contributions that use geophysical (seismic, geodetic, remote sensing, potential fields), numerical and/or analog modeling, and geological techniques to understand strain accommodation, geologic hazards, subduction processes, deformation history, and plate kinematics, as affected by pre-existing structures. This session also encourages contributions on future research directions on strain accommodation on continental rifting and subduction zones.
Primary Convener:  Daniel A Laó-Dávila, Oklahoma State University Main Campus, Stillwater, OK, United States
Conveners:  Estella A Atekwana, Oklahoma State University Main Campus, Stillwater, OK, United States and Mohamed G Abdelsalam, Oklahoma State University Main Campus, Boone Pickens School of Geology, Stillwater, OK, United States

Cross-Listed:
  • G - Geodesy
  • NH - Natural Hazards
  • NS - Near Surface Geophysics
  • S - Seismology

Abstracts Submitted to this Session:

Juliet Biggs1, Ryan Lloyd2, Michael Hodge3, Elspeth Robertson1, Matthew Wilks4, Ake Fagereng3, J Michael Kendall1, Hassan S. Mdala5, Elias Lewi6 and Atalay Ayele7, (1)University of Bristol, Bristol, United Kingdom, (2)COMET, Bristol, United Kingdom, (3)Cardiff University, School of Earth and Ocean Sciences, Cardiff, CF24, United Kingdom, (4)University of Bristol, York, United Kingdom, (5)Geological Survey of Malawi, Zomba, Malawi, (6)Addis Ababa University, IGSSA, Addis Ababa, Ethiopia, (7)Addis Ababa University, Addis Ababa, Ethiopia
Urbi Basu and Christine Ann Powell, Center for Earthquake Research and Information, Memphis, TN, United States
Erin Heilman1, Folarin Kolawole2, Micah Mayle3, Estella A Atekwana3 and Mohamed G Abdelsalam3, (1)Stillwater, OK, United States, (2)Oklahoma State University, Boone Pickens School of Geology, Stillwater, OK, United States, (3)Oklahoma State University, Stillwater, OK, United States
Oceane Foix1, Wayne C Crawford1, Ivan Koulakov2, Marc M Regnier3, Bernard Pelletier4 and Esline Garaebiti5, (1)Institut de Physique du Globe de Paris, Paris, France, (2)A.A. Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk, Russia, (3)Géoazur - Université Nice Sophia Antipolis, Université Côte d'Azur, IRD, CNRS, OCA, Valbonne, France, (4)IRD, Nouméa, New Caledonia, (5)Vanuatu Meteorology and Geohazards Department, Port Vila, Vanuatu
Michael Hodge1, Ake Fagereng1, Juliet Biggs2 and Hassan S. Mdala3, (1)Cardiff University, School of Earth and Ocean Sciences, Cardiff, CF24, United Kingdom, (2)University of Bristol, School of Earth Sciences, Bristol, United Kingdom, (3)Geological Survey of Malawi, Zomba, Malawi
Thilo Wrona, University of Bergen, Bergen, Norway, Haakon Fossen, Univ Bergen, Bergen, Norway, Robert Gawthorpe, University of Bergen, Department of Earth Science, Bergen, Norway, Jan Inge Faleide, Center for Earth Evolution and Dynamics (CEED), Oslo, Norway and Marit Stokke Bauck, University of Oslo, Oslo, Norway
Nicolas Harrichhausen1, Kristin D Morell1, Christine Regalla2 and Emerson M Lynch2, (1)University of California Santa Barbara, Earth Science, Santa Barbara, CA, United States, (2)Boston University, Earth and Environment, Boston, MA, United States
Harisma Andikagumi1, Colin Macpherson2 and Kenneth J W McCaffrey1, (1)University of Durham, Durham, United Kingdom, (2)University of Durham, Department of Earth Sciences, Durham, United Kingdom
Anita Thea Saraswati, Stephane Mazzotti, Rodolphe Cattin and Cécilia Cadio, Géosciences Montpellier, Montpellier Cedex 05, France
Luca Collanega1, Christopher Aiden-Lee Jackson2, Rebecca E Bell3, Antje Lenhart4, Alexander J Coleman4, Anna Breda5 and Matteo Massironi6, (1)University of Padova, Padova, Italy, (2)Imperial College London, London, United Kingdom, (3)Imperial College London, London, SW7, United Kingdom, (4)Imperial College London, Department of Earth Science and Engineering, London, United Kingdom, (5)University of Padova, Department of Geosciences, Padova, Italy, (6)Univ Padova, Padova, Italy
Andrea Adams, Scripps Institution of Oceanography, La Jolla, CA, United States, Marcel Thielmann, Universität Bayreuth, Bayerisches Geoinstitut, Bayreuth, Germany and Gregor Golabek, Bayerisches Geoinstitut, Universitaet Bayreuth, Bayreuth, Germany
Kevin G Mackey1, Ludmilla Imaeva2, G S Gusev3, Valery Imaev4, Kazuya Fujita5, V I Vel'nikova4, S V Ashurkov4 and A I Seredkina4, (1)Michigan State University, East Lansing, MI, United States, (2)Institute of the Earth's Crust, Irkutsk, Russia, (3)Institute of Mineralogy, Geochemistry and Crystal Chemistry of Rare Elements, RAS, Moscow, Russia, (4)Institute of the Earth Crust SB RAS, Irkutsk, Russia, (5)Michigan State Univ, East Lansing, MI, United States
Steven Johnson1, Kimberly Mendez2, Stephen Caleb Mark Beresh1, William Garland Mynatt3, Emily Anne Elifritz4, Daniel A Laó-Dávila3, Estella A Atekwana3, Mohamed G Abdelsalam3, Patrick R.N. Chindandali5, Chikondi Chisenga6, Steven Gondwe6, Mathew Mkumbura7, Dickson Kalaguluka7, Leonard Kalindekafe8 and Jalf Salima5, (1)Oklahoma State University, Stillwater, United States, (2)University of Puerto Rico, Mayaguez, United States, (3)Oklahoma State University, Stillwater, OK, United States, (4)Oklahoma State University Main Campus, Boone Pickens School of Geology, Stillwater, OK, United States, (5)Geological Survey of Malawi, Zomba, Malawi, (6)Malawi University of Science and Technology, Geology, Limbe, Malawi, (7)Malawi University of Science and Technology, Limbe, Malawi, (8)Munich, Germany
Adrienne M Scott1, Anne Meltzer1, Josh Stachnik1, Ray Russo2, Ulzibat Munkhuu3 and Baasanbat Tsagaan4, (1)Lehigh University, Earth and Environmental Sciences, Bethlehem, PA, United States, (2)University of Florida, Geological Sciences, Gainesville, FL, United States, (3)Institute of Astronomy and Geophysics, Bayango District, Mongolia, (4)Institute of Astronomy and Geophysics, Ulaanbaatar, Mongolia
Casey W Nixon, Eirik Wiese and Robert Gawthorpe, University of Bergen, Department of Earth Science, Bergen, Norway

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