A structural and petrological study of the Late Proterozoic rocks in the Wadi Kid area, Sinai, Egypt indicates the presence of an extensional metamorphic core complex in the northern Arabian–Nubian Shield. Gneissic domes throughout the Arabian–Nubian Shield resemble the core complex of the Wadi Kid area and as a result, they are interpreted as extensional metamorphic core complexes. The presenc...

new structural, metamorphic, finite strain and kinematic vorticity data for granitic gneiss and metavolcano-sedimentary rocks of thetanumaharea in the arabian shield in saudi arabia reveal a history of deformation reflecting different tectonic regimes. kinematic analysis shows their relationship to the nappe contacts between the granitic gneiss and metavolcano-sedimentary rocks and explains the...

The Arabian plate has been converging with Eurasia for 20-30 Ma, currently at 2-3 cm/year. Convergence is manifested differently along strike, with collision and tectonic escape in the west (Anatolia) and subduction of Arabia beneath Eurasia in the east (Iran). The reason for these differences may reflect the greater density of the Arabian lithosphere in the east relative to that in the west. F...

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

Formation of new oceans by continental break-up is understood as a continuous evolution from rifting to ocean spreading. The Red Sea one few locations on Earth where plate boundary presently forms. Its provides key information how the tectonics operates and boundaries form evolve in time. While has already been formed southern spreading active, north-central segment still experiences rifting. r...

A compilation of magnetic data acquired during the past three decades for a region in central Saudi Arabia where Precambrian basement is partly exposed on the Arabian shield and partly concealed by overlying Phanerozoic strata, shows a central sector of conspicuous N-S-trending anomalies, a heterogeneous western sector of short-wavelength, high-intensity anomalies, and an eastern sector of lowt...

[1] We present a multiple step procedure for joint modeling of surface wave group velocity dispersion curves and teleseismic receiver functions for lithospheric velocity structure. The method relies on an initial grid search for a simple crustal structure, followed by a formal iterative inversion, an additional grid search for shear wave velocity in the mantle, and finally, forward modeling of ...

Abstract The proto-Alpine Cenerian orogen (Ediacaran-Ordovician) and the Cadomian (Ediacaran-Cambrian), remnants of which are exposed in central European Variscides, should be defined as two distinct spatially separated coastal orogens within Avalonian-Cadomian belt. originally lay front Sahara metacraton. It underwent a change from an active to passive margin setting during Cambrian. orogen, r...