Objective The tectonic characteristics and evolution of the Paleoproterozoic Jiao-Liao-Ji belt have been extensively studied in recent decades(Fig.1 a).Two main models have been proposed for the formation of this belt:a continental-or arc-continent collisional belt,and the opening and closure of an intra-continental rift.The main reasons for these ongoing debates are own to the complex composition,including metamorphosed volcano-sedimentary rocks,multiple pulses of granitic magmatism,meta-mafic intrusions,and tectonometamorphic history.In addition,earlier work focused on the geochronology and metamorphic evolution,whereas the Objective The tectonic characteristics and evolution of the Paleoproterozoic Jiao-Liao-Ji belt have been extensively studied in recent decades (Fig.1 a). Two main models have been proposed for the formation of this belt: a continental-or arc-continent collisional belt, and the opening and closing of an intra-continental rift. The main reasons for these ongoing debates are own to the complex composition, including metamorphosed volcano-sedimentary rocks, multiple pulses of granitic magmatism, meta-mafic intrusions, and tectonometamorphic history. In addition, earlier work focused on the geochronology and metamorphic evolution, but the