Rayn formation, a new name for the permian khuff formation (S. S.) In saudi arabia

Abstract

The rank of the Khuff Formation (late Carboniferous-late Permian) in Saudi Arabia is raised to group status and it is divided into Unayzah (late Carboniferous-early Permian) and Rayn (middle-late Permian) Formations. The name Rayn Formation is suggested as a new term to replace the Khuff Formation s. s. of authors, which violates the rules of stratigraphic nomenclature.