Some thoughts on the characteristics of Paleozoic ocean-continent transition from Tianshan mountains

Based on recent field and in-door researches and investigations,this paper briefly states and reviews on some issues on the characteristics of the Paleozoic ocean-continent transition from Tian shan mountains such as the Precam brian ocean-continental framework, opening and closing ages of the Paleozoic ocean,Paleozoic ocean-continental framework,the discovery of collision-orogenic mollasse formation in the bottom of Lower Carboniferous and its significance,and geodynamic backg round of formation of Carbon iferous-Permianla rgescalerift magmatism.And then,some news thoughts about theseissues a reput forward.