T44C:
One Rift, Two Rift, Magma-Rich Rift, Magma-Poor Rift: Deformation, Magmatism, Volatile Fluxes, and Their Consequences in the East African Rift System III

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Session ID#: 16580

Session Description:
The East African Rift system represents one of the largest active continental rift systems in the world, and it exhibits remarkable variability along its length in the amount and style of extension, seismicity, volcanism, volatile fluxes and surface morphology.  As such, the EARS presents a natural laboratory for investigating the controls on continental extension from initiation to final breakup and consequences for hazards, microclimate and ecosystems.  We invite abstracts from diverse fields (e.g., geochemistry, geodynamics, geology, geophysics) focused on elucidating the evolution of tectonic deformation, magmatism, and volatile fluxes during continental rifting in the EARS and comparative studies of other extensional systems elsewhere around the globe.
Primary Convener:  Natalie J Accardo, Columbia University of New York, Palisades, NY, United States
Conveners:  Donna J Shillington, Columbia University of New York, Palisades, NY, United States, Tobias P Fischer, University of California, Santa Barbara, Santa Barbara, United States and Juliet Biggs, University of Bristol, COMET, School of Earth Sciences, Bristol, United Kingdom
Chairs:  Natalie J Accardo, Columbia University of New York, Palisades, NY, United States and Juliet Biggs, University of Bristol, COMET, School of Earth Sciences, Bristol, United Kingdom
OSPA Liaison:  Donna J Shillington, Columbia University of New York, Palisades, NY, United States
Co-Organized with:
Volcanology, Geochemistry and Petrology, Volcanology, Geochemistry and Petrology, Seismology, Geodesy, and Earth and Planetary Surface Processes

Cross-Listed:
  • EP - Earth and Planetary Surface Processes
  • G - Geodesy
  • S - Seismology
  • V - Volcanology, Geochemistry and Petrology

Proposed Co-Organized Session with:
  • EP - Earth and Planetary Surface Processes
  • G - Geodesy
  • S - Seismology
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

1037 Magma genesis and partial melting [GEOCHEMISTRY]
1209 Tectonic deformation [GEODESY AND GRAVITY]
7230 Seismicity and tectonics [SEISMOLOGY]
8109 Continental tectonics: extensional [TECTONOPHYSICS]

Abstracts Submitted to this Session:

The origin of strike-slip tectonics in continental rifts (180002)
Carolina Pagli, Università di Pisa, Dipartimento di Scienze della Terra, Pisa, Italy, Sang-Ho Yun, Jet Propulsion Laboratory, Pasadena, CA, United States, Cynthia J Ebinger, Tulane University, School of Science & Engineering, New Orleans, United States, Derek Keir, University of Southampton, Ocean and Earth Sciences, Southampton, United Kingdom and Hua Wang, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China, Guangzhou, China
Seismic coupling at divergent plate boundaries from rate-and-state friction models (122182)
Hannah F Mark, Massachusetts Institute of Technology, Cambridge, United States, Mark D Behn, Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, MA, United States, Jean-Arthur L Olive, WHOI, Woods Hole, United States and Yajing Liu, McGill University, Department of Earth and Planetary Sciences, Montreal, QC, Canada
Implications of long-lived intrabasin faulting in the hangingwall of the 120 km long border fault of the deeply subsided central basin of the Malawi (Nyasa) Rift (180310)
Tannis McCartney1, Christopher A Scholz2, Donna J Shillington3, Cynthia J Ebinger4, Natalie J Accardo3, Patrick Rafiki N Chindandali5 and Godson Kamihanda6, (1)Syracuse University, Syracuse, NY, United States, (2)Syracuse University, Earth and Environmental Sciences, Syracuse, NY, United States, (3)Columbia University of New York, Palisades, NY, United States, (4)Tulane University, School of Science & Engineering, New Orleans, United States, (5)Northern Arizona University, School of Earth and Sustainability, Flagstaff, AZ, United States, (6)Geological Survey of Tanzania, Dodoma, Tanzania
Geometry and Kinematics of Active Faults in the northern Malawi Rift, Africa (166852)
Katherine E Peterson, University of Iowa, Iowa City, IA, United States, Patrick Rafiki N Chindandali, Northern Arizona University, School of Earth and Sustainability, Flagstaff, AZ, United States, Sarah J Oliva, University of Rochester, Rochester, NY, United States, Cynthia J Ebinger, Tulane University, School of Science & Engineering, New Orleans, United States, Donna J Shillington, Columbia University of New York, Palisades, NY, United States, Tannis McCartney, Syracuse University, Syracuse, NY, United States and Christopher A Scholz, Syracuse University, Earth and Environmental Sciences, Syracuse, NY, United States
Integrated Numerical Model for the East African Rift System: Plume-induced Rifting and Continental Break-up from Lake Malawi to Red Sea (146986)
Sylvie D Leroy1, Alexander Koptev1, Eric Calais2 and Taras Gerya3, (1)University Pierre and Marie Curie Paris VI, ISTEP, Paris, France, (2)Ecole Normale Supérieure, Université PSL, Paris, France, (3)ETH Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland
Reconciling Mantle Plume Initiation of Continental Breakup with the Inferred Direction of Rift Propagation (190403)
W Roger Buck, Lamont-Doherty Earth Observatory, Palisades, NY, United States and Dr. Xiaochuan Tian, PhD, Lamont -Doherty Earth Observatory of Columbia University, New York, NY, United States
Early-stage continental rifting in East Africa assisted by magma and magmatic volatiles (Invited) (120642)
James D Muirhead1,2, Hyunwoo Lee3, Simon A Kattenhorn4, Tobias P Fischer5, Cynthia J Ebinger6, Sara Mana7, Brent D Turrin8, Gladys karegi Kianji9, Edwin Dindi10, Steven W Roecker11, Sarah J Oliva12, Alexander Weinstein12 and Dr. D. Sarah Stamps, PhD, (1)Syracuse University, Earth Sciences, Syracuse, NY, United States, (2)University of Idaho, Moscow, ID, United States, (3)University of New Mexico Main Campus, Earth and Planetary Sciences, Albuquerque, NM, United States, (4)University of Alaska Anchorage, Geological Sciences, Anchorage, AK, United States, (5)University of California, Santa Barbara, Santa Barbara, United States, (6)Tulane University, School of Science & Engineering, New Orleans, United States, (7)Salem State University, Salem, United States, (8)Rutgers University, Geol. Sciences, Piscataway, NJ, United States, (9)University of Nairobi, Geology, Nairobi, Kenya, (10)University of Nairobi, Nairobi, Kenya, (11)Rensselaer Polytechnic Inst, Earth & Environmental Sciences, Troy, United States, (12)University of Rochester, Rochester, NY, United States

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