Post-amalgamation events include the formation of the Huqf Supergroup (732-540 Ma) in Oman and W. Saudi Arabia, which accumulated in basement basins, the first 1100 m of which include glaciomarine deposits with diamictites and dropstones from the Sturtian and Marinoan glaciations. Gneiss belts and domes forming in the Late Neoproterozoic include the Kirsh gneiss in the Arabian shield and the Meatiq gneiss dome in the Eastern Desert. Late Neoproterozoic shear zones include the Hamisana Shear Zone (665-610 Ma), the Ar Rika- Qazaz Shear Zone (640-610 Ma) within the Najd Fault System, and the Oko Shear Zone (700-560 Ma).