ABSTRACT
Two paired gravity anomalies, which are identical to those identified in the Canadian and Nubian Shields, are recognizable in Asir escarpment-Red Sea and Al Amar regions of the Arabian Shield. These anomalies are principally interpreted in a manner similar to that suggested for paired anomalies. However, Al Amar paired anomaly is considered to reflect boundaries between contrasting Proterozoic terranes whereas the Red Sea Tihamat Asir paired anomaly is attributed to a boundary that separates the Tertairy-Recent Red Sea terrane (developed by Sea floor Spreading Process) from the Proterozoic Asir terrane. Thus, the paired gravity anomalies characterized the beginning (development of a passive margin and spreading) and the end (suturing) of the Wilson Cycle.
