It has been one of the most intriguing questions in the earth sciences whether the snowball Earth event is genetically associated with mantle superwelling, super-continent assemblage and breakup, and rift magmatism during the Neoproterozoic[1—4]. In orde It has been one of the most intriguing questions in the earth sciences whether the snowball Earth event is genetically associated with mantle superwelling, super-continent assemblage and breakup, and rift magmatism during the Neoproterozoic [1-4]. In orde