Key amalgamation events, starting 780-760 Ma, with the formation of the Tabalah-Tarj Shear Zone, the gneiss Afaf Belt, and the 600 km long and 565 km wide Bi'r Umq and Nakasib Suture (780-760 Ma), an ophiolite-decorated fold-shear zone, between the Jiddah-Haya and Hijaz-Gebeit Terranes. Then between 750 and 660 Ma, the Atmur-Delgo Suture formed as Halfa Terrane ophiolite nappes were thrust onto the Bayuda Terrane. Simultaneously, the Allaqi-Heiani-Sol and Hamed-Onib-Yanbu Suture formed, consisting of nappes and portions of ophiolite along an east-trending shear zone between the Gebeit-Hijaz and Eastern Desert Terrane and Midyan Terranes. Between 680 and 640 Ma, the 600 km long and 5–30 km wide Hulayfah-Ad Dafinah-Ruwah Suture formed between the Afif Terrance and terranes to the southwest. Simultaneously, the Halaban Suture formed between the Afif and Ad Dawadimi Terranes as a nappe of Halaban ophiolite thrust westward. In addition, the Ar Amar Suture, consisting of the Al Amar Fault zone with ophiolite lenses, between the Ad Dawadimi and Ar Rayan Terranes, while the Nabitah Fault Zone formed in Asir Terrane. The final amalgamation event occurred 650-600 Ma, when the Keraf Suture, consisting of ophiolite folded and sheared rocks, formed between the Bayuda-Halfa and Gebeit-Gabgaba Terranes.