PRELMINARY APPROACH TO THE FAULTING GENERATIONS OF THE TARIM BASIN

The faulting evolution of the Tarim Basin has gone through four generations,that is,the normal fault generation of the Caledonian age,the thrust generation of the Haixi age,the thrust-strike-slip fault generation of the Indo-Chinese-Yanshan age and the thrtist-detechment-strike-slip fault generation of the Himalayan age.Stich evolution from an unary structural generation into ternary sturcttiral generations reflects that the faulting is sub-jected to the superimposition or reformation of tectonic movement many stages and many times during the process of evolution.The regional stress fields reflected by the faulted structure of four generations are compressional stress fields close to north-south direction except that the first generation is an extensional stress field of north-south direction.