Geophysical evidences on reactivation of NE faults in southern Arabian Shield and its tectonic implications
The Eastern flank of the Red sea represents an uplifted Precambrian basement that is known as the Arabian Shield. Different tectonic events were activated since the collisions among continental fragments that occurred during the period 630–550 Ma, showing very old NE ophiolite-suture zones, North trend shear zones, belts, folds, and NW Sinistral fault system known as Najd shear zones. Thus, heterogeneities and inherited faults are expected in the old basement; however, based on surface observations, NE trend faults are not described in the Arabian Shield. Despite the inconsistency with the background tectonic model of the Red Sea rifting, recent seismological studies show that active NE faults may exist in western Arabian Shield. This study aims to investigate and map the fault system in southern Arabian Shield and then better understand the tectonic system acting in the region. We provide an analysis that
The source model for evolution of the Harrat Al-Birk (HAB) is presented by constructing a 2D integrated crustal model using gravity anomalies and the rheological parameters computed from receiver…
A high-resolution gravimetric geoid model for the Kingdom of Saudi Arabia area was determined. A data set of 459,848 land gravity, 80,632 shipborne marine gravity data, DTU17 altimetry gravity…
The Eastern flank of the Red sea represents an uplifted Precambrian basement that is known as the Arabian Shield.