Early Neoproterozoic crustal evolution in northern Yili Block: Insights from migmatite, orthogneiss and leucogranite of the Wenquan metamorphic complex in the NW Chinese Tianshan

•Field and geochemical data indicate anatexis as migmatite forming process in Wenquan Complex.•Migmatization and S-type granitic intrusion occurred synchronously and genetically linked.•Meta-sedimentary and meta-volcanic rocks are source rocks of migmatite and granitic rocks.•Neoproterozoic migmatization and granitic intrusion reworked continental crust of Yili Block.