T23E:
Role of Preexisting Structures on Plate Deformation in Continental Rifting and Subduction Zones Posters

Submit an Abstract to this Session



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 Abdelsalam, Oklahoma State University Main Campus, Boone Pickens School of Geology, Stillwater, OK, United States
Chairs:  Mohamed Abdelsalam, Oklahoma State University Main Campus, Boone Pickens School of Geology, Stillwater, OK, United States, Daniel A Laó-Dávila, Oklahoma State University Main Campus, Stillwater, OK, United States and Estella A Atekwana, Oklahoma State University, Boone Pickens School of Geology, Stillwater, OK, United States
OSPA Liaison:  Daniel A Laó-Dávila, Oklahoma State University Main Campus, Stillwater, OK, United States

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

8109 Continental tectonics: extensional [TECTONOPHYSICS]
8158 Plate motions: present and recent [TECTONOPHYSICS]
8159 Rheology: crust and lithosphere [TECTONOPHYSICS]
8170 Subduction zone processes [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Role of the Precambrian Mughese Shear Zone on Cenozoic faulting along the Rukwa-Malawi Rift segment of the East African Rift System (225724)
Erin Heilman1, Folarin Kolawole2, Micah Mayle1, Estella A Atekwana3 and Mohamed Abdelsalam1, (1)Oklahoma State University, Stillwater, OK, United States, (2)Oklahoma State University, Boone Pickens School of Geology, Stillwater, United States, (3)University of California Davis, Department of Earth & Planetary Sciences, Davis, CA, United States
New evidence for Oligocene to Recent slip along the San Juan fault, a terrane-bounding structure within the Cascadia forearc of southern British Columbia, Canada (245854)
Nicolas Harrichhausen1, Kristin D Morell1, Christine Regalla2 and Emerson M Lynch3, (1)University of California Santa Barbara, Earth Science, Santa Barbara, CA, United States, (2)Boston University, Department of Earth and Environment, Boston, MA, United States, (3)Boston University, Earth and Environment, Boston, MA, United States
Geodynamics of Modern Structures and Seismotectonics of the Russian Northeast (267861)
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, Department of Earth and Atmospheric Sciences, 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
Crustal Structure of Khövsgöl, Mongolia (283468)
Adrienne M Scott1, Anne Meltzer1, Josh Stachnik1, Ray Russo2, Ulzibat Munkhuu3 and Baasanbat Tsagaan3, (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, Ulaanbaatar, Mongolia

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