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

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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, 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 Fagereng5, J Michael Kendall6, Hassan S. Mdala7, Elias Lewi8 and Atalay Ayele9, (1)University of Bristol, Bristol, United Kingdom, (2)COMET, Bristol, United Kingdom, (3)Cardiff University, Cardiff, CF24, United Kingdom, (4)University of Bristol, York, United Kingdom, (5)Cardiff University, School of Earth and Ocean Sciences, Cardiff, CF24, United Kingdom, (6)University of Bristol, Bristol, BS8, United Kingdom, (7)Geological Survey of Malawi, Zomba, Malawi, (8)Addis Ababa University, IGSSA, Addis Ababa, Ethiopia, (9)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 V Mayle2, 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)IRD, Valbonne, France, (4)IRD, Nouméa, New Caledonia, (5)Vanuatu Meteorology and Geohazards Department, Port Vila, Vanuatu

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