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Geodetic constraints on present?day motion of the Arabian Plate: Implications for Red Sea and Gulf of Aden rifting

ArRajehi, Abdullah; McClusky, Simon; Reilinger, Robert; Daoud, Mohamad; Alchalbi, Abdlmutaleb; Ergintav, Semih; Gomez, Francisco; Sholan, Jamal; Bou-Rabee, Firyal; Ogubazghi, Ghebrebrhan; Haileab, Biniam; Fisseha, Shimelles; Asfaw, Laike; Mahmoud, Salah; Rayan, Ali; Bendik, Rebecca; Kogan, Lewis

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Five years of continuously recording GPS observations in the Kingdom of Saudi Arabia together with new continuous and survey-mode GPS observations broadly distributed across the Arabian Peninsula provide the basis for substantially improved estimates of present-day motion and internal deformation of the Arabian plate. We derive the following relative, geodetic Euler vectors (latitude (̊N), longitude (̊E), rate (̊/Myr, counterclockwise)) for Arabia-Nubia (31.7 ± 0.2, 24.6 ± 0.3, 0.37 ± 0.01),...[Show more]

dc.contributor.authorArRajehi, Abdullah
dc.contributor.authorMcClusky, Simon
dc.contributor.authorReilinger, Robert
dc.contributor.authorDaoud, Mohamad
dc.contributor.authorAlchalbi, Abdlmutaleb
dc.contributor.authorErgintav, Semih
dc.contributor.authorGomez, Francisco
dc.contributor.authorSholan, Jamal
dc.contributor.authorBou-Rabee, Firyal
dc.contributor.authorOgubazghi, Ghebrebrhan
dc.contributor.authorHaileab, Biniam
dc.contributor.authorFisseha, Shimelles
dc.contributor.authorAsfaw, Laike
dc.contributor.authorMahmoud, Salah
dc.contributor.authorRayan, Ali
dc.contributor.authorBendik, Rebecca
dc.contributor.authorKogan, Lewis
dc.date.accessioned2015-12-08T22:38:55Z
dc.identifier.issn0278-7407
dc.identifier.urihttp://hdl.handle.net/1885/36015
dc.description.abstractFive years of continuously recording GPS observations in the Kingdom of Saudi Arabia together with new continuous and survey-mode GPS observations broadly distributed across the Arabian Peninsula provide the basis for substantially improved estimates of present-day motion and internal deformation of the Arabian plate. We derive the following relative, geodetic Euler vectors (latitude (̊N), longitude (̊E), rate (̊/Myr, counterclockwise)) for Arabia-Nubia (31.7 ± 0.2, 24.6 ± 0.3, 0.37 ± 0.01), Arabia-Somalia (22.0 ± 0.5, 26.2 ± 0.5, 0.40 ± 0.01), Arabia-India (18.0 ± 3.8, 87.6 ± 3.3, 0.07 ± 0.01), Arabia-Sinai (35.7 ± 0.8, 17.1 ± 5.0, 0.15 ± 0.04), and Arabia-Eurasia (27.5 ± 0.1, 17.6 ± 0.3, 0.404 ± 0.004). We use these Euler vectors to estimate present-day stability of the Arabian plate, the rate and direction of extension across the Red Sea and Gulf of Aden, and slip rates along the southern Dead Sea fault south of the Lebanon restraining bend (4.5-4.7 ± 0.2 mm/yr, left lateral; 0.8-1.1 ± 0.3 mm/yr extension) and the Owens fracture zone (3.2-2.5 ± 0.5 mm/yr, right lateral, increasing from north to south; 1-2 mm/yr extension). On a broad scale, the Arabian plate has no resolvable internal deformation (weighted root mean square of residual motions for Arabia equals 0.6 mm/yr), although there is marginally significant evidence for N-S shortening in the Palmyride Mountains, Syria at ≤1.5 mm/yr.We show that present day Arabia plate motion with respect to Eurasia is consistent within uncertainties (i.e., ±10%) with plate tectonic estimates since the early Miocene when Arabia separated from Nubia. We estimate the time of Red Sea and Gulf of Aden rifting from present-day Arabia motion, plate tectonic evidence for a 70% increase in Arabia-Nubia relative motion at 13 Ma, and the width of the Red Sea and Gulf of Aden and find that rifting initiated roughly simultaneously (±2.2 Myr) along the strike of the Red Sea from the Gulf of Suez to the Afar Triple Junction, as well as along the West Gulf of Aden at 24 ± 2.2 Ma. Based on the present kinematics, we hypothesize that the negative buoyancy of the subducted ocean lithosphere beneath the Makran and the Zagros fold-thrust belt is the principle driver of Arabia-Eurasia convergence and that resisting forces associated with Arabia-Eurasia continental collision have had little impact on plate motion.
dc.publisherAmerican Geophysical Union
dc.sourceTectonics
dc.subjectKeywords: Arabian plate; continental collision; deformation; geodesy; GPS; oceanic lithosphere; plate convergence; plate motion; plate tectonics; rifting; subduction; Arabian Sea; Gulf of Aden; Indian Ocean; Red Sea [Indian Ocean]
dc.titleGeodetic constraints on present?day motion of the Arabian Plate: Implications for Red Sea and Gulf of Aden rifting
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume29
dc.date.issued2010
local.identifier.absfor040407 - Seismology and Seismic Exploration
local.identifier.ariespublicationu4278572xPUB131
local.type.statusPublished Version
local.contributor.affiliationArRajehi, Abdullah, King Abdulaziz City for Science and Technology
local.contributor.affiliationMcClusky, Simon, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationReilinger, Robert, Massachusetts Institute of Technology
local.contributor.affiliationDaoud, Mohamad, Syrian National Earthquake Centre
local.contributor.affiliationAlchalbi, Abdlmutaleb, Syrian National Earthquake Centre
local.contributor.affiliationErgintav, Semih, TUBITAK Marmara Research Centre
local.contributor.affiliationGomez, Francisco, University of Missouri
local.contributor.affiliationSholan, Jamal, Yemen National Seismological Observatory Centre
local.contributor.affiliationBou-Rabee, Firyal, Kuwait University
local.contributor.affiliationOgubazghi, Ghebrebrhan, University of Asmara
local.contributor.affiliationHaileab, Biniam, University of Asmara
local.contributor.affiliationFisseha, Shimelles, Geophysical Observatory, AAU
local.contributor.affiliationAsfaw, Laike, Geophysical Observatory, AAU
local.contributor.affiliationMahmoud, Salah, NRIAG
local.contributor.affiliationRayan, Ali, NRIAG
local.contributor.affiliationBendik, Rebecca, University of Montana
local.contributor.affiliationKogan, Lewis, University of Montana
local.description.embargo2037-12-31
local.bibliographicCitation.issue3
local.bibliographicCitation.startpageTC3011
local.bibliographicCitation.lastpageTC3020
local.identifier.doi10.1029/2009TC002482
local.identifier.absseo970104 - Expanding Knowledge in the Earth Sciences
dc.date.updated2016-02-24T10:48:23Z
local.identifier.scopusID2-s2.0-77954569697
local.identifier.thomsonID000279315600001
CollectionsANU Research Publications

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