Abstract:Zhangsangou Formation-Complex is located in the northeastern margin of North China Block, which has been previously considered to be Paleoproterozoic metamorphic volcanic-sedimentary sequences, mainly according to its metamorphic grade and regional stratigraphic correlation. Based on our filed investigation and SHRIMP dating, three samples from Zhangsangou Formation-Complex have yielded protolith age of 2517±9 Ma, 2518±7 Ma, 2534±26Ma and metamorphic age of 2439±24Ma、2464±73M and 2433±71Ma, respectively, indicating that it formed in late Neoarchean and reworked in late Neoarchean-early Paleoproterozoic by metamorphinism. In combination with regional geological data, we show that its metamorphic time is likely related to a collisional tectonism between ancient Longgang’s continental bolck and other continental bolck,which indicates that North China Block developed a cratonization in late Neoarchean-early Paleoproterozoic.