The tectonic evolution of the Changchun-Yanji suture zone: Constraints of zircon U-Pb ages of the Yantongshan accretionary complex (NE China)

• The Yantongshan Complex is composed of a sequence of HP metamorphic rocks . • The final closure of the Jilin-Heilongjiang ocean occurred at 237–217 Ma. • The formation of Changchun-Yanji belt resulted from the Paleo-Pacific subduction . The Changchun-Yanji suture zone is composed of a sequence of high-pressure metamorphic rocks. It lies to the southern margin of the Jilin-Heilongjiang high-pressure metamorphic belt and separates the...