Lithospheric seismic velocity discontinuities beneath the Arabian Shield
نویسندگان
چکیده
منابع مشابه
Seismic velocity structure and depth-dependence of anisotropy in the Red Sea and Arabian shield from surface wave analysis
[1] We investigate the lithospheric and upper mantle shear wave velocity structure and the depth-dependence of anisotropy along the Red Sea and beneath the Arabian Peninsula using receiver function constraints and phase velocities of surface waves traversing two transects of stations from the Saudi Arabian National Digital Seismic Network. Frequency-dependent phase delays of fundamental-mode Lo...
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[1] The Mojave Neovolcanic Province (MNVP), located in the Mojave block of southern California, comprises late Miocene to Quaternary small-volume basaltic centers. Geochemistry indicates an asthenospheric source for the MNVP beginning in the late Miocene, but no physical evidence of missing mantle lithosphere has been presented. We utilize receiver functions and ambient noise tomography to imag...
متن کاملSeismic Structure of the Arabian Shield Lithosphere and Red Sea Margin
Seismic Structure of the Arabian Shield Lithosphere and Red Sea Margin Andrew Nyblade, Yongcheol Park, Arthur Rodgers, and Abdullah Al-Amri Department of Geosciences, Penn State University, University Park, PA 16802, Seismology Group, Lawrence Livermore National Laboratory, Livermore, CA 94551, King Saud University, Geology Department and Seismic Studies Center, P.O. Box 2455, Riyadh, Saudi Arabia
متن کاملSeismic imaging of mantle transition zone discontinuities beneath the northern Red Sea and adjacent areas
S U M M A R Y The dramatic asymmetry in terms of surface elevation, Cenozoic volcanisms and earthquake activity across the Red Sea is an enigmatic issue in global tectonics, partially due to the unavailability of broad-band seismic data on the African Plate adjacent to the Red Sea. Here, we report the first comprehensive image of the mantle transition zone (MTZ) discontinuities using data from ...
متن کاملMantle discontinuities beneath Southern Africa
[1] Seismic velocity discontinuities within the top 1000 km of the Earth beneath southern Africa are imaged by stacking about 1300 source-normalized broadband seismograms recorded by the Southern African Seismic Experiment. The Moho, 410, and 660 kilometer discontinuities are clearly detected. The mean mantle transition zone thickness is 245 km, essentially the same as the global average, sugge...
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 1998
ISSN: 0094-8276
DOI: 10.1029/98gl02214