T009
From deep lithosphere to earth surface process; the natural laboratory of the east African rift

Session ID#: 161414

Session Description:
The East African rift represents a natural laboratory where deep sourced thermo-chemical anomaly could be linked to early phase of plateau uplift, magmatism and rifting in East Africa. Those mechanisms are enhancing depositional processes shaping the continental slope of the western Indian Ocean but also changing the topography of East Africa, reorganizing river catchments, drainage basins, and moderating climate. However to date, the relationship between EARS seismicity, magmatism and the instability of the continental margin of East Africa is still poorly known, on both long-term and short-term time scales. The tectonic processes triggering the offshore evolution of the Somali plate (or western Indian Ocean) are still very elusive due to both the complex microplate kinematics  and their poorly defined tectonic boundary nowadays by active extensional structures.  We welcome submissions from modern seismology, geodesy, paleogeodesy, geophysics, geochemistry and geology along with advances in modelling capabilities aiming at revealing the details of these processes affecting the East African region.
Index Terms:

3002 Continental shelf and slope processes [MARINE GEOLOGY AND GEOPHYSICS]
8038 Regional crustal structure [STRUCTURAL GEOLOGY]
8120 Dynamics of lithosphere and mantle: general [TECTONOPHYSICS]
8178 Tectonics and magmatism [TECTONOPHYSICS]

Primary Convener:  David Iacopini, The University of Naples Federico II, DISTAR, Naples, Italy
Conveners:  Vittorio Maselli, Dalhousie University, Department of Earth and Environmental Sciences, Halifax, NS, Canada, Cynthia J Ebinger, Tulane University, School of Science & Engineering, New Orleans, LA, United States and Jolante van Wijk, New Mexico Institute of Mining and Technology, Earth & Environmental Science, Socorro, NM, United States
 
Magmatism During the Continent – Ocean Transition (1048228)
Tyrone O Rooney, Michigan State University, East Lansing, United States, Eric L Brown, Aarhus University, Department of Geoscience, Aarhus, Denmark, Ian D Bastow, Imperial College London, Department of Earth Science and Engineering, London, SW7, United Kingdom, Ramon Arrowsmith, Arizona State University, School of Earth and Space Exploration, Tempe, AZ, United States and Christopher J Campisano, Arizona State University, Tempe, AZ, United States
 
A Revision of East African Rift System Kinematics from GPS Observations and Block Modeling (Invited) (1059368)
D. Sarah Stamps, Virginia Tech, Geosciences, Blacksburg, VA, United States, Corne Kreemer, University of Nevada Reno, Nevada Bureau of Mines and Geology, Reno, NV, United States, Rui Manuel Silva Fernandes, University of Beira Interior, Covilha, Portugal, Tahiry Andriantsoa Andriantsoa Rajaonarison, New Mexico Institute of Mining and Technology, Department of Geosciences, Socorro, United States and Gérard Rambolamanana, Institute and Observatory of Geophysics Antananarivo-University of Antananarivo, Physics, Antananarivo, Madagascar
 
Changes in Slope Canyon-Channel Systems Record the Asynchronous Uplift of Pemba and Zanzibar Islands, Offshore Northern Tanzania. (1061908)
Marina Dottore Stagna1, Vittorio Maselli1, Djordje Grujic1, Pamela Reynolds1, David Reynolds1, David Iacopini2, Bill Richards1, John R. Underhill3 and Dick Kroon4, (1)Dalhousie University, Department of Earth and Environmental Sciences, Halifax, NS, Canada, (2)The University of Naples Federico II, DISTAR, Naples, Italy, (3)University of Aberdeen, Aberdeen, United Kingdom, (4)University of Edinburgh, Edinburgh, United Kingdom
 
New Insight into the Physical Properties of the East African Mantle from Seismic Attenuation (1075947)
Heather A Ford, University of California Riverside, Riverside, CA, United States, Gillian Goldhagen, University of California Riverside, Department of Earth and Planetary Sciences, Riverside, CA, United States, Joseph S Byrnes, Northern Arizona University, School of Earth and Sustainability, Flagstaff, United States and Maryjo N Brounce, University of California Riverside, Earth and Planetary Sciences, Riverside, United States
 
The Influence of Inherited Brittle Fabrics on Continental Rifting: Insights from Centrifuge Experimental Modeling and application to the East African Rift System (1087161)
Yaoyao Zou1, Giacomo Corti2, Daniele Maestrelli2, Chiara Del Ventisette3, Liang Wang4 and Chuanbo Shen1, (1)China University of Geosciences, Key Laboratory of Tectonics and Petroleum Resources of the Ministry of Education, Wuhan, China, (2)Consiglio Nazionale delle Ricerche, Istituto di Geoscienze e Georisorse, Florence, Italy, (3)University of Florence, Dipartimento di Scienze della Terra, Florence, Italy, (4)China Earthquake Administration, Geophysical Exploration Center, Zhengzhou, China
 
Magmatic fluids and upper mantle earthquakes in cratonic rifts: Examples from East Africa (1091811)
Eduardo Arzabala, Tulane University of Louisiana, New Orleans, LA, United States, Cynthia J Ebinger, Tulane University, School of Science & Engineering, New Orleans, LA, United States, Aude Lavayssière, Institut de Physique du Globe de Paris, Paris, France, Connor Drooff, University of Alaska Fairbanks, Fairbanks, United States and Derek Keir, University of Southampton, Ocean and Earth Sciences, Southampton, United Kingdom
 
Role of surface processes in controlling the evolution of rifting in Ethiopia (1103187)
Ameha Muluneh, Addis Ababa University, School of Earth Sciences, Addis Ababa, Ethiopia, Dr. Sascha Brune, GFZ German Research Centre for Geosciences, Potsdam, Germany, Giacomo Corti, Consiglio Nazionale delle Ricerche, Istituto di Geoscienze e Georisorse, Florence, Italy and Derek Keir, University of Southampton, Ocean and Earth Sciences, Southampton, United Kingdom
 
Kivu Rift Dike Intrusions: a comparison of the 2002 and 2021 Nyiragongo eruptions and associated ground deformation using InSAR data (1118686)
Derrick Murekezi1, Christelle Wauthier2, Judit Maria Maria Gonzalez Santana2, Cynthia J Ebinger3, Paul Lundgren4 and Andrew Vern Newman5, (1)Georgia Tech, Earth and Atmospheric Sciences, Atlanta, United States, (2)The Pennsylvania State University, Department of Geosciences, University Park, PA, United States, (3)Tulane University, School of Science & Engineering, New Orleans, LA, United States, (4)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States, (5)Georgia Institute of Technology, Atlanta, United States
 
The Development of Multiple Phases of Superposed Rifting in the Turkana Depression, East Africa: Evidence from H-K Stacking of Teleseismic Receiver Functions (1120112)
Christopher Steven Steven Ogden1, Ian D Bastow2, Cynthia J Ebinger3, Rita Kounoudis2, Martin Musila3, Garrett Sullivan4, Atalay Ayele5, Rebecca O Bendick6, Nicholas Mariita7, Gladys karegi Kianji8 and Birhanu Abera5, (1)University of Leicester, Leicester, LE1, United Kingdom, (2)Imperial College London, Department of Earth Science and Engineering, London, SW7, United Kingdom, (3)Tulane University of Louisiana, New Orleans, LA, United States, (4)Tulane University of Louisiana, New Orleans, United States, (5)Addis Ababa University, Addis Ababa, Ethiopia, (6)University of Montana, Geosciences, Missoula, MT, United States, (7)Dedan Kimathi University of Technology, Geothermal Training and Research Institute, Nyeri, Kenya, (8)University of Nairobi, Geology, Nairobi, Kenya
 
Plume-related HIMU and EMI enriched mantle signatures in Oligo-Miocene Turkana volcanism and implications for the geodynamics of the east African superplume (1122817)
Sara Mana1, Yue Cai2,3, Stephen Cox3, Catherine C Beck4, Craig S Feibel5, Sidney R Hemming3 and Steven L Goldstein3, (1)Salem State University, Salem, United States, (2)Nanjing Institute of Geology and Palaeontology, State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing, China, (3)Lamont-Doherty Earth Observatory, Palisades, United States, (4)Hamilton College, Geosciences, Clinton, NY, United States, (5)Rutgers University, Earth and Planetary Sciences, Piscataway, NJ, United States
 
Seismic Imaging of Heterogeneous Lithosphere Beneath the Unusually Broad Turkana Depression, Africa (1139742)
Rita Kounoudis1, Ian D Bastow1, Cynthia J Ebinger2, Fiona Ann Darbyshire3, Christopher Steven Steven Ogden4, Atalay Ayele5, Rebecca O Bendick6, Nicholas Mariita7, Gladys karegi Kianji8, Freddie Ugo4, Martin Musila9, Garrett Sullivan10 and Birhanu Abera11, (1)Imperial College London, Department of Earth Science and Engineering, London, SW7, United Kingdom, (2)Tulane University, School of Science & Engineering, New Orleans, LA, United States, (3)University of Quebec at Montreal UQAM, Centre de recherche GEOTOP, Montreal, QC, Canada, (4)Imperial College London, Department of Earth Science and Engineering, London, United Kingdom, (5)Addis Ababa University, Institute of Geophysics, Space Science and Astronomy, Addis Ababa, Ethiopia, (6)University of Montana, Geosciences, Missoula, MT, United States, (7)Dedan Kimathi University of Technology, Geothermal Training and Research Institute, Nyeri, Kenya, (8)University of Nairobi, Geology, Nairobi, Kenya, (9)Tulane University, New Orleans, United States, (10)Tulane University of Louisiana, New Orleans, United States, (11)Addis Ababa University, Addis Ababa, Ethiopia
 
Neogene Structural and Tectonic characterization of West Somali Rift system, offshore Tanzania: tectonic complexities within a juvenile rift. (1147202)
David Iacopini1, Marina Dottore Stagna2, Stefano Tavani3, Vittorio Maselli2, Giovanni Camanni4, David Reynolds2 and Cynthia J Ebinger5, (1)The University of Naples Federico II, DISTAR, Naples, Italy, (2)Dalhousie University, Department of Earth and Environmental Sciences, Halifax, NS, Canada, (3)University of Naples Federico II, Dipartimento di Scienze della Terra, dell’Ambiente e delle Risorse (DiSTAR), Naples, Italy, (4)Universita di Napoli Federico II, DISTAR, Napoli, Italy, (5)Tulane University, School of Science & Engineering, New Orleans, LA, United States
 
Incipient Continental Rifting: Evidence from Mantle Xenoliths from Northern Uganda (1152488)
Wendy R Nelson1, Tanya Furman2, Emma Stolinas3, Madeline Murtaugh3, Shelby Bowden4, Michael Dawson5 and Sarah N Spencer5, (1)Towson University, Department of Physics, Astronomy, and Geosciences, Towson, MD, United States, (2)Pennsylvania State University Main Campus, University Park, PA, United States, (3)Pennsylvania State University, Department of Geosciences, University Park, PA, United States, (4)Pennsylvania State University, Department of Geosciences, University Park, United States, (5)Towson University, Department of Physics, Astronomy, and Geosciences, Towson, United States
 
Strain accommodation during continental rifting: Mantle lithosphere matters (1152809)
Martin Musila1, Cynthia J Ebinger2, Ian D Bastow3, Rebecca O Bendick4, Nicholas Mariita5, Gladys karegi Kianji6, Garrett Sullivan7, Rita Kounoudis3, Christopher Steven Steven Ogden8 and Ellen Knappe9, (1)Tulane University of Louisiana, New Orleans, LA, United States, (2)Tulane University, School of Science & Engineering, New Orleans, LA, United States, (3)Imperial College London, Department of Earth Science and Engineering, London, SW7, United Kingdom, (4)University of Montana, Geosciences, Missoula, MT, United States, (5)Dedan Kimathi University of Technology, Geothermal Training and Research Institute, Nyeri, Kenya, (6)University of Nairobi, Geology, Nairobi, Kenya, (7)Tulane University of Louisiana, New Orleans, United States, (8)Imperial College London, Department of Earth Science and Engineering, London, United Kingdom, (9)Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States
 
Seismic structure of the crust-uppermost mantle beneath the Ethiopia volcanic province: evidence from auto-correlation and 3D-ambient noise Rayleigh wave tomography (1153066)
Sisay Alemayehu1,2, Abdelkrim Aoudia2, Atalay Ayele1, Surya Pachhai2,3, Cynthia J Ebinger4, Harry Thapa2, Radia Kherchouche2,5, Mariangela Guidarelli2,6 and Seongryong Kim7, (1)Addis Ababa University, Institute of Geophysics, Space Science, and Astronomy, Addis Ababa, Ethiopia, (2)The Abdus Salam International Center for Theoretical Physics (ICTP), Earth System Physics, Trieste, Italy, (3)University of Utah, Department of Geology and Geophysics, Salt Lake City, United States, (4)Tulane University, School of Science & Engineering, New Orleans, LA, United States, (5)Centre de Recherche en Astronomie, Astrophysique et Géophysique,, Algiers, Algeria, (6)National Institute of Oceanography and Applied Geophysics (OGS), Trieste, Italy, (7)Chungnam National University, Geology and Space Science, Daejeon, South Korea
 
Seismic Imaging of a Weakly Extended Magmatic Rift Zone: the Kivu Rift Project (1153601)
Emily Kraus, Tulane University of Louisiana, New Orleans, LA, United States, Garrett Sullivan, Tulane University of Louisiana, New Orleans, United States, Tite Niyetegeka, Rwanda Mines, Petroleum and Gas Board, Kigali, Rwanda, Aline Uwasempabuka, Rwanda Environmental Management Authority, Kigali, Rwanda, Martin Musila, Tulane University, New Orleans, United States, Derrick Murekezi, Georgia Tech, Earth and Atmospheric Sciences, Atlanta, United States, Andrew Vern Newman, Georgia Institute of Technology, Atlanta, United States, Cynthia J Ebinger, Tulane University, School of Science & Engineering, New Orleans, LA, United States, Samer Naif, Scripps Institution of Oceanography, La Jolla, CA, United States and Christelle Wauthier, The Pennsylvania State University, Department of Geosciences, University Park, PA, United States
 
Lake Level Fluctuations Affect Strain Localization and Mantle Melting in Evolving Continental Rifts (1161389)
Liang Xue, Syracuse University, Earth and Environmental Sciences, Syracuse, NY, United States, James Muirhead, University of Auckland, Auckland, New Zealand, Robert Moucha, Syracuse University, Department of Earth and Environmental Sciences, Syracuse, NY, United States, Christopher A Scholz, Syracuse Univ, Earth Sciences, Syracuse, NY, United States and Lachlan JM Wright, Syracuse University, Earth Sciences, Syracuse, NY, United States
 
Thermomechanical Models of Extension Across the Turkana Depression within the East African Rift (1181938)
William E Holt1, Michel Tettey2, Lajhon Campbell1, Alireza Bahadori3 and Sabrina Lautin1, (1)Stony Brook University, Department of Geosciences, Stony Brook, United States, (2)Herbert H. Lehman College, CUNY, Environmental Science, Bronx, United States, (3)Lamont-Doherty Earth Observatory, Columbia University in the City of New York, New York, United States
 
The 2015 Earthquake Swarm of Fentale Volcano: Multi-hazard Threat for Ethiopia’s Access to the Coast (1184948)
Kathryn A Whaler1, Atalay Ayele2, Richard Luckett3 and Brian Baptie3, (1)University of Edinburgh, School of GeoSciences, Edinburgh, United Kingdom, (2)Addis Ababa University, Institute of Geophysics, Space Science and Astronomy, Addis Ababa, Ethiopia, (3)British Geological Survey, Edinburgh, United Kingdom
 
Using Remote Sensing And GIS To Identify And Analyze Magmatic Strain Accommodation: The Case Study Of Marsabit, Kenya (1189322)
Cora Van Hazinga, Salem State University, Salem, MA, United States, Sara Mana, Salem State University, Salem, United States and James Muirhead, University of Auckland, Auckland, New Zealand
 
Active deformation in the central section of the East African Rift from tectonic, volcanic, and hyrdologic processes. (1197926)
Kyle D Murray, University of Hawaii at Manoa, Honolulu, HI, United States
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