Abstract:

The purpose of this paper is to analyze the basinmountain coupling and the process of tectonic transition between Northern Tarim Basin and Southern Tianshan Orogenic Belt. The typical superimposed Tarim Basin experienced polycycle tectonic evolution. It is indicated that polyphase and complex basinmountain coupling and basinmountain transition existed in the Northern Tarim Basin and the adjacent Southern Tianshan Orogenic Belt. （1）Basinmountain coupling and tectonic transition according to the geological time realm: coupling of the intracontinental rifting basinearly phase extensional orogenylater stage compressional orogeny during the period of the earlyPaleozoic, coupling of the intracontinental rifting basinretroarc orogenylater stage collisional orogeny during the period of the LaterPaleozoic, coupling of the intracontinental foreland basincompressional orogeny during the Mesozoic, coupling of the foreland basincompressional orogeny in the Eogene, and coupling of the recycled foreland basincompressional orogeny in the NeogeneQuaternary.（2）Basinmountain coupling based on the depth realm: basinmountain coupling of the deep mantle underthrusting, coupling of the multilevel detachment in the crust, coupling of the detachment in the basement, coupling of extension and thrustnappe in the Paleozoic, and coupling of thrustnappe in the MesoCenozoic.（3）Basinmountain coupling according to the kinematics and geodynamics: thrustnappetype basinmountain coupling, gravitationaldetachmenttype basinmountain coupling, wrenchtransfertype basinmountain coupling, magmaweldtype basinmountain coupling, and crocodilemouthtype basinmountain coupling.

Key words: basinmountain coupling, basinmountain transition, Northern Tarim Basin, Southern Tianshan Orogenic Belt