Woduhe area is located in the north of the Daxing'an Mountains, and was influenced by the combination of the Circum-Pacific tectonic domain and the Mongolia-Okhotsk Ocean tectonic domain during Mesozoic. The tectonic evolution in this area is so complex that the analysis of the petrotectonic assemblage to the investigation of the tectonic evolution during Mesozoic in the study area, as well as in the Daxing'an Mountains area. Therefore, based on the land and resources survey project of the China Geological ...