Magma-maintained rift segmentation at continental rupture in the 2005 Afar dyking episode

  title={Magma-maintained rift segmentation at continental rupture in the 2005 Afar dyking episode},
  author={T. Wright and C. Ebinger and J. Biggs and A. Ayele and G. Yirgu and D. Keir and A. Stork},
Seafloor spreading centres show a regular along-axis segmentation thought to be produced by a segmented magma supply in the passively upwelling mantle. On the other hand, continental rifts are segmented by large offset normal faults, and many lack magmatism. It is unclear how, when and where the ubiquitous segmented melt zones are emplaced during the continental rupture process. Between 14 September and 4 October 2005, 163 earthquakes (magnitudes greater than 3.9) and a volcanic eruption… Expand
Evidence for focused magmatic accretion at segment centers from lateral dike injections captured beneath the Red Sea rift in Afar
Continental breakup occurs through repeated episodes of mechanical stretching and dike injection within discrete, narrow rift segments. However, the time and length scales of the dike intrusions,Expand
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Continental rupture models emphasize the role of faults in extensional strain accommodation; extension by dyke intrusion is commonly overlooked. A major rifting episode that began in 2005 SeptemberExpand
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September 2005 mega‐dike emplacement in the Manda‐Harraro nascent oceanic rift (Afar depression)
Local and regional seismic data constrain the space-time history of deformation and likely magma sources for the September 2005 diking episode in the Manda-Harraro rift zone of the Afar depression.Expand
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Seismo-volcanic crisis in Afar: the 2005 Boina rupture-eruption sequence
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Magmatic cycles pace tectonic and morphological expression of rifting (Afar depression, Ethiopia)
The existence of narrow axial volcanic zones of mid-oceanic ridges testifies of the underlying concentration of both melt distribution and tectonic strain. As a result of repeated diking andExpand


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