Some problems of geotectonics of Sinkiang district

During Paleozoic time the central Tien Shan crystalline zone, a geanticlinal region with two deep rifts, separated the southern and northern Tien Shan geosynclines. The uplifting movement was primary within this period. Within Sinkiang the southern belt of the western section of Pei Shan is a Late Paleozoic subsiding zone, developed on the basement of the Precambrian folds. Pei Shan fault block is not the eastern extension of the Tien Shan geosyncline nor a branch of it. Rejuvenation of the fold in the northern Kunlun syneclise fold zone was not Caledonian but late Variscan, in the western Kunlun geosynclinal fold zone. –IGR Staff.