Faulting intersections and magma-feeding zones in Tihamat-asir, Southeast red sea rift: Aeromagnetic and structural perspective
During continental rifting structural fabrics (such as pre-existing faults and joints) are thought to influence shallow crustal processes, particularly the development of rift faults, magma reservoirs and surface volcanism (Le Corvec et al., 2013; Lloyd et al., 2018). The Red Sea Rift System represents a divergent boundary that separates the Late Pre-cambrian Arabian-Nubian Shield into two significant shields; the Nubian Shield and the Arabian Shield. The breakup of continents is accompanied by faulting, ductile stretching and thinning of the litho-sphere and magma intrusion (McKenzie 1978). The crustal thickness of the Red Sea coastal plain, localized in a <30 km wide zone near the coastline, in southwestern Arabia is estimated between 20 and 23 km (Ahmed et al., 2013). The eastern side of the Rift, has been affected by major tectonic events; mainly faulting and associated magmatism (Davison et al., 1994; Davison et al., 1994, 1994, Coleman, 1993, Sebai et al., 1991, Baldridge et al., 1991, El-Isa and Al Shanti, 1989, Camp and Roobol, 1989, Coleman et al., 1983, Blank, 1977; Blank, 1977, 1977, 1979). Agocs and Keller (1962) and Gillman (1968) concluded that the southern Red Sea has been dissected by large NW trending faults, as well as NE trending faults that have been interpreted by Landry et al. (1978) as transform faults. Based on seismological data, Al-Malki and Al-Amri (2013) and El-Isa and Al Shanti (1989) indicated that the seismic ac-tivity in western Saudi Arabia is mainly attributed to the NE and NW faulting and Cenozoic volcanism
The present study presents the analysis of a moderate earthquake (Mw 4.0) and its largest aftershocks located along the Red Sea coast, southwestern Saudi Arabia, with the aim to understand the…
A hydrogeophysical investigation has been conducted along the NE part of the Gulf of Aqaba coast that covered a total area of about 40 km2. The area represents a vital part of the ambitious…
This study explores the spatial distribution of seismicity, the pattern of b-values, gravity and magnetic anomalies, heat fow data, and focal mechanism solutions to more thoroughly understand the…