Climate conditions on planet Earth By EJMancero 720 BCE Start of the Cryogenian Period 690 BCE Sturtian glaciation 654 BCE Marinoan glaciation 635 BCE End of the Cryogenian Period 635 BCE Start of the Ediacaran Period 619 BCE Basaltic dike rocks arise from volcanism 580 BCE Gaskier's glaciation 547 BCE Baykonurian glaciation