Kinematics and structural evolution of the Anziling dome-and-keel architecture in east China: Evidence of Neoarchean vertical tectonism in the North China Craton

The debate on the role of vertical versus horizontal tectonism in Archean cratons is intimately linked to initiation plate tectonics. dome-and-keel architecture has been considered as a consequence tectonism. Although such structural pattern documented some Mesoarchean and older cratons, Kaapvaal Pilbara whether it also occurs Neoarchean poorly constrained. Determining kinematics, evolution, timing these structures crucial understanding how tectonic behavior operated during evolution early Earth. North China Craton, especially its eastern part, continental block preserves typical greenstone-granite rock assemblages. Detailed mapping reveals that Anziling area (east China) characterized by dome structure without significant reworking later deformation. contact with supracrustal assemblage now dip-slip Shuangshanzi ductile shear zone. In rocks, compositional layers are folded into upright isoclinal folds. Meanwhile, along zone, foliation varies from NNW SW sub-vertical dip. Mineral stretching lineations indicate sinistral sense slightly oblique-slip component north, but show NWW-directed SW-directed steep west south, respectively. Kinematic indicators imply granitic formed through vertically upward movement accompanied an uneven clockwise rotation. rocks sank downwards form regional keel structure. Structural data suggests U-Pb zircon dating pre-, syn-, post-tectonic dykes at 2530?2500 Ma, was related emplacement tonalite-trondhjemite-granodiorite granitoids. New this study suggest until late Neoarchean, still dominant regime operating Craton.