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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
general
Strain accommodation by slow slip and dyking in a youthful continental rift, East Africa
Nature, Volume 456, No. 7223, Year 2008
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Description
Continental rifts begin and develop through repeated episodes of faulting and magmatism, but strain partitioning between faulting and magmatism during discrete rifting episodes remains poorly documented. In highly evolved rifts, tensile stresses from far-field plate motions accumulate over decades before being released during relatively short time intervals by faulting and magmatic intrusions. These rifting crises are rarely observed in thick lithosphere during the initial stages of rifting. Here we show that most of the strain during the July-August 2007 seismic crisis in the weakly extended Natron rift, Tanzania, was released aseismically. Deformation was achieved by slow slip on a normal fault that promoted subsequent dyke intrusion by stress unclamping. This event provides compelling evidence for strain accommodation by magma intrusion, in addition to slip along normal faults, during the initial stages of continental rifting and before significant crustal thinning. ©2008 Macmillan Publishers Limited. All rights reserved.
Authors & Co-Authors
Calais, Éric
United States, West Lafayette
College of Science
Albaric, Julie
France, Plouzane
Institut Universitaire Européen de la Mer Iuem
Deschamps, Anne E.
France, Sophia Antipolis
Le Laboratoire Géoazur
Delvaux, Damien F.
Belgium, Tervuren
Royal Museum for Central Africa
Déverchère, Jacques
France, Plouzane
Institut Universitaire Européen de la Mer Iuem
Ebinger, Cynthia J.
United States, Rochester
University of Rochester
Ferdinand, Richard Wambura
Tanzania, Dar es Salaam
University of Dar es Salaam
Kervyn, François
Belgium, Tervuren
Royal Museum for Central Africa
Macheyeki, A.
Belgium, Ghent
Universiteit Gent
Tanzania
Mineral Resources (madini) Institute
Oyen, Anneleen
Luxembourg, Luxembourg
National Museum of Natural History
Netherlands, Delft
Delft University of Technology
Perrot, Julie
France, Plouzane
Institut Universitaire Européen de la Mer Iuem
Saria, Elifuraha
Tanzania, Dar es Salaam
Ardhi University
Smets, Benoît
Belgium, Tervuren
Royal Museum for Central Africa
Stamps, Dorothy Sarah
United States, West Lafayette
College of Science
Wauthier, Christelle
Belgium, Tervuren
Royal Museum for Central Africa
Belgium, Liege
Université de Liège
Statistics
Citations: 208
Authors: 15
Affiliations: 12
Identifiers
Doi:
10.1038/nature07478
ISSN:
00280836
e-ISSN:
14764687
Study Locations
Multi-countries
Tanzania