Depending on the NS-trending structural section in Xiaonanchuan area of East Kunlun, south of Golmud, the authors recognized six different tectonic slices based on field detailed contact relationship, composition characteristics, metamorphic-deformation features and microstructures. A comparative analysis shows that amphibolitic lenses-bearing green schist and blocky marble should be part of Neoproterozoic Wanbaogou Group and formed in the setting of continental rift. Silty slate, foliated pyroclastic rock and platy tuffite are the components of a suite of volcanic arc and arc-related fore-back basins, and schist is the petrologic constituent within the accretionary wedge. Petrologic constituent and geochronology of the tectonic melange belt in southern Kunlun can provide the fundamental substance and precise constraints for the establishment of the accretionary complex belt.
