Current advances in the geological survey in the Gongshan region, northwestern Yunnan

Current advances in the geological survey in the Gongshan region, northwestern Yunnan may be generalized as follow. (1) The Upper Palaeozoic strata may be divided into seven formation complexes that are assigned to the Tengchong stratigraphic subprovince, Shidian and Lancang microprovince of the Baoshan stratigraphic subprovince. (2) The Dulongjiang granites may be arranged into two superunits and assigned into the mixed crust-mantle granites and crustderived granites in the volcanic and syn-collision settings, respectively. The magmatism took place during the Late Jurassic to the Late Cretaceous and recorded the subduction, collision and mountain building of the Bangong Lake-DongqiaoNujiang suture zone. (3) The regional thermodynamic metamorphism in the Gongshan region has found to be closely relative to the ductile shear zone but irrelative to the prolith types and stratigraphic horizons, and has multiphase metamorphism in the collision and mountain building settings.(4) The large-sized ductile shear zone at the main peak of the Gaoligong Mountains has exercised a major control on the strata and magmatic rocks, which should be associated with the Bangong Lake-Dongqiao-Nujiang suture zone.