Late tectonic deformation characteristics and stress mechanism in Lunpola Basin, Tibet Plateau

The 2D seismic data of the Lunpola Basin showed that the late tectonic deformation of the basin could be classified into four types:tensional-torsional lateral adjustment, thrust-depression, compressive folding and compressive-torsional uplifting. Ten tectonic deformation partitions were identified:thrust, compressive folding and compressive-torsional uplifting belts in the south and north, respectively, compressive-torsional uplifting and thrust-depression belts in the west, tensional-torsional lateral adjustment belt in the center, and thrust-depression, compressive folding belts in the east. Tensional and compressive structural styles coexist in the Lunpola Basin, and were controlled by the regional sinistral strike-slip compressive stress, which are the most unique characteristics of late tectonic deformation of the basin.