Cryogenian ophiolite tectonics and metallogeny of the Central Eastern Desert of Egypt

Regional setting and characteristics of the Neoproterozoic Wadi Hamama Zn–Cu–Ag–Au prospect: evidence for an intra-oceanic island arc-hosted volcanogenic hydrothermal system

“…After the accretion of the intra-oceanic island arc system into the Saharan Metacraton, a reversal in the subduction polarity occurred and a cordilleran-margin stage started above a new west-dipping subducted plate (Abd El-Rahman et al 2012). Following this stage, the shield was affected by final collisional event, which followed by the orogenic collapse stage (Johnson et al 2011).…”

“…The formation of the VMS deposits is related to rifting periods, which punctuates the dominantly compressive collisional events (Franklin et al 2005). Abd El-Rahman et al (2012) attributed the formation of the VMS deposits in the southern part of the CED to a rifted island arc, which was located at the tip of the southward-propagating back-arc system (Fig. 13).…”

“…Based on the variation in the chemistry of the ophiolitic rocks in the CED, Abd El-Rahman et al (2009a, b) proposed that the Neoproterozoic intraoceanic arc system of the CED of Egypt was formed over an east-dipping subduction zone (present coordinates). Abd El-Rahman et al (2012) divided the CED of Egypt into two NW-SE belts, the arc-back-arc belt to the east and the arc-forearc belt to west. The formation of the VMS deposits is related to rifting periods, which punctuates the dominantly compressive collisional events (Franklin et al 2005).…”

The relations between Gondwana and the adjacent peripheral Cadomian domain—constrains on the origin, history, and paleogeography of the peripheral domain

“…North of lat. 25°N a belt of allochthonous ophiolites and associated serpentinites and mé-langes is exposed along the Eastern Desert of Egypt (Azer and Stern, 2007;Farahat et al, 2011;Abd El-Rahman et al, 2012;El Bahariya, 2012). These originated at 745-735 Ma in a supra-subduction zone setting, most likely located in the west, but its relation with a possible (unexposed) prolongation of the Keraf suture north of lat.…”

Geochemical fingerprinting of Maastrichtian oil shales from the Central Eastern Desert, Egypt: Implications for provenance, tectonic setting, and source area weathering

“…The younger unit includes low‐grade metamorphosed ophiolite and island arc assemblages that are commonly referred to as the Pan‐African Nappe Complex. The ophiolitic and island arc assemblages of variable compositions cover a large area in the Central Eastern Desert of Egypt (Abd El‐Rahman et al, ).…”