Physics
Scientific paper
Oct 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3620306a&link_type=abstract
Geophysical Research Letters, Volume 36, Issue 20, CiteID L20306
Physics
13
Seismology: Seismicity And Tectonics (1207, 1217, 1240, 1242), Seismology: Volcano Seismology (8419), Geographic Location: Africa
Scientific paper
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. The results distinguish three centers from which subhorizontal dike propagation progressed: two distinct sources around the Dabbahu-Gab'ho Volcanic Complex (DVC) and the third at the Ado'Ale Volcanic Complex (AVC). The temporal development of seismicity shows that the majority of the dike volume is fed from beneath AVC and migrated laterally with an average rate of 15-30 cm/sec. This dike emplacement at a divergent plate boundary is unusual due to the rapid intrusion of a large volume of magma and the large amount of seismic moment release. We interpret this volcano-tectonic crisis as a complex interaction of multiple magma plumbing sources and lithosphere at a plate boundary under extension. Such repeated episodes will eventually shape the incipient oceanic rift morphology.
Ayele Atalay
Buck Roger W.
Ebinger Cynthia
Jacques Eric
Keir Derek
No associations
LandOfFree
September 2005 mega-dike emplacement in the Manda-Harraro nascent oceanic rift (Afar depression) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with September 2005 mega-dike emplacement in the Manda-Harraro nascent oceanic rift (Afar depression), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and September 2005 mega-dike emplacement in the Manda-Harraro nascent oceanic rift (Afar depression) will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1513841