T031:
Rifting in Africa: How did it start and where does it end?





Session ID#: 25919

Session Description:
The East African Rift system (EARS) is one of the largest active continental rifting systems in the world and has provided valuable insights into the anatomy of extensional plate boundaries. Despite the increased scientific interest over the past decade, many aspects of this rift remain enigmatic.  In particular, it is unclear where the EARS ends at its southern tip, the stress regime here, and the resulting seismicity, volcanism and surface deformation.

We invite contributions from diverse fields of expertise (geophysics, seismology, geodynamics, geology, geochemistry, geodesy) on the characterization of the EARS. Of particular interest is the Mw 6.5 earthquake in central Botswana of April 3 2017, which provides new insights on the extent of the active rifting zone, along with the overall seismo-tectonic and geodynamic framework of southern Africa. Furthermore, we hope to shed light on the relationship between present-day large earthquakes and the long-lived geological structure of cratonic regions.

Primary Convener:  Mark van der Meijde, University of Twente, Enschede, 7500, Netherlands
Conveners:  Stephen Paul Hicks, University of Southampton, Southampton, SO14, United Kingdom, Estella A Atekwana, Oklahoma State University Main Campus, Stillwater, OK, United States and Hanneke Paulssen, Utrecht University, Dept. of Earth Sciences, Utrecht, Netherlands
Co-Organized with:
Tectonophysics, Geodesy, and Seismology

Cross-Listed:
  • DI - Study of the Earth's Deep Interior
  • EP - Earth and Planetary Surface Processes
  • V - Volcanology, Geochemistry and Petrology

Abstracts Submitted to this Session:

Ana Domingues, Instituto Superior Técnico, Lisboa, Portugal and Joao F B D Fonseca, IST, University of LIsbon, Lisbon, Portugal
Islam Fadel, University of Twente, Earth System Analysis, Enschede, 7500, Netherlands, Mark van der Meijde, University of Twente, Enschede, 7500, Netherlands, Hanneke Paulssen, Utrecht University, Dept. of Earth Sciences, Utrecht, Netherlands and Tarzan Kwadiba, Principal Geophysicist 1 & Head of Geophysics Division, Botswana Geoscience Institute, Lobatse, Botswana
Hanneke Paulssen1, Mark van der Meijde2, Islam Fadel2 and Tarzan Kwadiba3, (1)Utrecht University, Dept. of Earth Sciences, Utrecht, Netherlands, (2)University of Twente, Enschede, 7500, Netherlands, (3)Principal Geophysicist 1 & Head of Geophysics Division, Botswana Geoscience Institute, Lobatse, Botswana
Emmanuel Atem Njinju1, Estella A Atekwana2, D. Sarah Stamps3, Mohamed G Abdelsalam2, Victor Nyalugwe4, Eliot A Atekwana5 and Kevin Lee Mickus6, (1)Virginia Polytechnic Institute and State University, Department of Geosciences, Blacksburg, VA, United States, (2)Oklahoma State University, Stillwater, OK, United States, (3)Massachusetts Institute of Technology, Cambridge, MA, United States, (4)Geological Survey of Malawi, Zomba, Malawi, (5)Oklahoma State University Main Campus, Stillwater, OK, United States, (6)Missouri State University, Springfield, MO, United States
Joshua Robert Jones1, D. Sarah Stamps2, Christelle Wauthier3,4, Michael D Daniels5, Elifuraha Saria6, Kang Hyeun Ji7, David Mencin8 and Daud Ntambila6, (1)Virginia Tech, Blacksburg, VA, United States, (2)Virginia Polytechnic Institute and State University, Blacksburg, VA, United States, (3)Institute for CyberScience, University Park, United States, (4)Pennsylvania State University Main Campus, University Park, PA, United States, (5)National Center for Atmospheric Research, Earth Observing Laboratory, Boulder, CO, United States, (6)Ardhi University, Dar Es Salaam, Tanzania, (7)KIGAM Korea Institute of Geoscience and Mineral Resources, Daejeon, Korea, Republic of (South), (8)UNAVCO, Inc., Boulder, CO, United States
Robert W King and Michael Floyd, MIT, Cambridge, MA, United States
Ian D Bastow1, Alistair Boyce2, Edward Caunt2, Juliette Guilloud De Courbeville2, Sneha Desai2, Rita Kounoudis2, Eva Marie Golos3, Scott Burdick4 and Robert D van der Hilst3, (1)Imperial College London, London, SW7, United Kingdom, (2)Imperial College London, London, United Kingdom, (3)Massachusetts Institute of Technology, Cambridge, MA, United States, (4)MIT, Cambridge, MA, United States
Andrew B Katumwehe1, Estella A Atekwana2, Mohamed G Abdelsalam2, Kevin Lee Mickus3 and Jeannot Goussi Ngalamo4, (1)Oklahoma State University Main Campus, Stillwater, OK, United States, (2)Oklahoma State University, Stillwater, OK, United States, (3)Missouri State University, Springfield, MO, United States, (4)University of Yaounde, Department of Earth Sciences,, Yaounde, Cameroon
Folarin Kolawole1, Estella A Atekwana2, Sean Malloy3, D. Sarah Stamps4, Raphael Grandin5, Mohamed G Abdelsalam2, Khumo Leseane6 and Elisha M Shemang7, (1)Oklahoma State University Main Campus, Geology, Stillwater, OK, United States, (2)Oklahoma State University, Stillwater, OK, United States, (3)Virginia Polytechnic Institute and State University, Department of Geosciences, Blacksburg, VA, United States, (4)Massachusetts Institute of Technology, Cambridge, MA, United States, (5)Ecole Normale Superieure, Paris, France, (6)Oklahoma State Univ, Stillwater, OK, United States, (7)Botswana International University of Science and Technology, Gaborone, Botswana
Muchen Sun1, Kelly Hong Liu1, Xiaofei Fu2 and Stephen S Gao1, (1)Missouri University of Science and Technology, Geology and Geophysics Program, Rolla, MO, United States, (2)Northeast Petroleum University, Daqing, China
Michael Christopher Daly and Anthony Brian Watts, University of Oxford, Earth Sciences Dept, Oxford, United Kingdom
Vunganai Midzi1, Vincent Jele2, Motsamai Tarzan Kwadiba3, Reuben Mantsha2, Brassnavy Manzunzu2, Thifhelimbilu Faith Mulabisana2, Onkgopotse Ntibinyane3, Tebogo Pule2, Ian Saunders2, Leonard Tabane2, Gerhard van Aswegen2 and Brian Sibonelo Zulu2, (1)Council for Geoscience, Pretoria, South Africa, (2)Council for Geoscience, Engineering and Geohazards, Pretoria, South Africa, (3)Botswana Geoscience Institute, Lobatse, Botswana
Tuo Wang, Kelly Hong Liu and Stephen S Gao, Missouri University of Science and Technology, Geology and Geophysics Program, Rolla, MO, United States
Stephen S Gao1, Kelly Hong Liu1, Youqiang Yu2, Cory A Reed1, Kevin Lee Mickus3 and Moikwathai Moidaki4, (1)Missouri University of Science and Technology, Geology and Geophysics Program, Rolla, MO, United States, (2)TongJi University, ShangHai, China, (3)Missouri State University, Springfield, MO, United States, (4)university of botswana, gaborone, botswana, Botswana
Aubreya Nicole Adams, Colgate University, Department of Geology, Hamilton, NY, United States and Jonathan Charles Miller, Colgate University, Hamilton, NY, United States
Sean Malloy, Virginia Polytechnic Institute and State University, Department of Geosciences, Blacksburg, VA, United States and D. Sarah Stamps, Virginia Tech, Blacksburg, VA, United States
D. Sarah Stamps1, Corné Kreemer2 and Tahiry Andriantsoa Rajaonarison1, (1)Virginia Polytechnic Institute and State University, Blacksburg, VA, United States, (2)University of Nevada Reno, Nevada Bureau of Mines and Geology, Reno, NV, United States

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