publication . Article . 2014

Stress field during early magmatism in the Ali Sabieh Dome, Djibouti, SE Afar rift

christian sue;
Open Access English
  • Published: 01 Sep 2014
  • Publisher: HAL CCSD
Abstract
International audience; The so-called Ali Sabieh range, SE Afar rift, exhibits an atypical antiform structure occurring in the overall extensional tectonic context of the Afar triple junction. We dynamically analyzed the brittle deformation of this specific structural high using four different methods in order to better constrain the tectonic evolution of this key-area in the Afar depression. Paleostress inversions appear highly consistent using the four methods, which a posteriori validates this approach. Computed paleostress fields document two major signals: an early E-W extensional field, and a later transcurrent field, kinematically consistent with the prev...
Subjects
free text keywords: Afar triple junction, Ali Sabieh antiform, Brittle deformation, Paleostress inversion, Extension, Doming, Djibouti, [ SDU.STU.GM ] Sciences of the Universe [physics]/Earth Sciences/Geomorphology, [ SDU.STU.TE ] Sciences of the Universe [physics]/Earth Sciences/Tectonics, [ SDE.MCG ] Environmental Sciences/Global Changes, [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics, [SDE.MCG]Environmental Sciences/Global Changes, [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology, Earth-Surface Processes, Geology, Tectonics, Magmatism, Anticline, Triple junction, Dome, Rift, Deformation (mechanics), Stress field, Seismology
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publication . Article . 2014

Stress field during early magmatism in the Ali Sabieh Dome, Djibouti, SE Afar rift

christian sue;