关键词: 川滇块体, 构造运动学, 变形分解作用, 构造转换, 定量模型

Abstract: It is a fundamental study for the research of evolution of Qinghai-Tibetan Plateau to resolve the kinematics of active boundary belt around the plateau quantitatively. With the measuring technology of photogrammetry and chronological method of analysis among regional climate,geomorphology and tectonics,we get a set of quantitative kinematical data for the main faults along the northern-eastern active boundary belt of Sichuan-Yunnan block. There were centre-symmetrical dip-slips locally in many fault segments while they were mainly strike-slip. With vector computation within a regional system including the north-east active boundary belt of Sichuan-Yunnan block and related blocks,we analyzed the longitudinal kinematical transformation and transversal slip partitioning quantitatively based on the parameters of main faults kinematics. From these data,there were a vertical uplift rate of 6.2mm/a in the Gonggashan area in distributed deformation form,and a mainly dip-slip fault at least with a rate of 1.45mm/a along the inner side of eastern terrace of Anninghe valley. We set up quantitative slip partitioning models for the northeast corner and eastern belt of Sichuan-Yunnan block. A quantitative kinematical model is set up for the regional system which consists of the northern-eastern active boundary belt of Sichuan-Yunnan block and related blocks.

Key words: Sichuan-Yunnan block, kinematics, slip partitioning, tectonic transformation, quantitative model