CHARACTERISTICS AND EVOLUTION OF THE METAMORPHIC ROCKS IN THE NALATI-HONGLIUHE SUTURE ZONE IN WESTERN TIANSHAN

The Nalati-Hongliuhe suture zone between the Kazakhstan-Junggar plate and Tarim plate along the Western Tianshan tectonic belt plays an important role in the tectonic evolution of Western Tianshan. The regional metamorphic rocks and dynamometamorphic rocks (including mylonite and cataclasite) distributed along the suture zone constitute an intact evolutionary sequence, which are the product of different evolutionary stages (time) and different evolutionary levels (space). From the spatiotemporal evolution characteristics of the metamorphic rocks, it can be seen that, since the Early Ancient South Tianshan Ocean closed in Devonian period, the Western Tianshan tectonic belt has been strongly rising in the north-south compressive stress field.