The Tectonic Analysis Of The Wenquangou Group In West Kunlun Area Which Formed At Early Silurian Period Of The Tibetan Plateau

Thw West Kunlun area is the key area of the Tibetan Plateau orogenic for a longtime. Many geologists at home or abroad, all or them were taken focous surroundingthis area, but for the Wenquangou group itself, less involved for that. This study hotspring ditch group in the West Kunlun region has a high research value; to explore therelationship of the internal structure of hot spring ditch group sequence can providepractical significance for the study of the western Kunlun area.In this paper, field measurements, the use of Wenquangou group of smallstructures in the analytical method to describe the geometry, kinematics, dynamics ofgroup formation in Wenquangou group. Based on the complex relationship of the fieldtectonic phenomena Wenquangou group region of the stress of a total of five, these fiveperiod occupy a leading role in the NE-SW direction, up to twice in the region,respectively, for the first a fourth. In the stress recovery in the study group folds ofWenquangou group, according to the stereographic projection to draw S-N direction oftectonic stress. The third of the tectonic stress is manifested in the NW-SE direction,mainly to determine the basis for the extensive development of the Wenquangou groupfaults and joints phenomenon. The fifth tectonic stress the performance of the the σ1nearly vertical direction, normal slip (off) joints or faults.According to the Wenquangou group deformation sequence and analysis of theresults of the stress field, combined with the data of previous studies of the region,summed up the history of the evolution of West Kunlun Wenquangou group:Wenquangou group formed in the Early Silurian remnant ocean basin experienced Garyeast of the tectonic movement; Paleo-Tethys in the late Permian subduction in theTriassic collisional orogeny, the late Triassic Indosinian orogeny the end of the ocean basin evolution in the western Kunlun West Kunlun enter intraplate evolution stage;-Cenozoic tectonic evolution stages of West Kunlun in construction entered a period ofadjustment after the orogenic crustal evolution of the western Kunlun region mainlyoverlap intracontinental orogenesis; Paleo-Tethys in the late Triassic-Early Jurassicperiod to complete the final closure of the Qiangtang block of West Kunlun block to itssouth side eventually spliced together, the evolution of the form of the mainperformance characteristics of the continuous northward subduction..