abstract:The Riphean is a stage or age of the geologic timescale from . The name Riphean is used in the Proterozoic stratigraphy of the Siberian Craton in Russia.
Itcouldalso be correlated with that in the upperhorizonof the Middle Riphean—lower horizon of the Upper Riphean in South Ural Mountains and Siberia of Russia, North Africa, andAlaskaPeninsula.