西昆仑造山带复式增生楔的构造特征与演化

通过对西昆仑古生代主剪切带和早中生代增生楔杂岩剖面中的组成与构造等特征，西昆仑早古生代和晚古生代一早中生代两次向南的增生造山作用及其增生楔的组成与构造演化进行系统研究，探讨增生楔杂岩在大陆造山带及其对大陆侧向增生的意义。

STRUCTURES AND EVOLUTION OF THE MULTIPLE ACCRETIONARY COMPLEXES,WESTERN KUNLUN OROGENIC BELT (CHINA)

The western Kunlun range is located between the Tarim block to the north and the Karakoram-Qiangtang block to the south. Its tectonic evolution is of key significance to the crustal growth of Asia in the Paleozoic and Early Mesozoic. However, there is no consensus about the western Kunlun geology and its tectonic model is still in controversial. This paper deals mainly with two accretionary complexes in this high mountain range, the Early Paleozoic Kudi accretionary complex and the Mazar accretionary complex, respectively. The former one comprises of gneiss and schist, which contains blocks of ultrabasic rock and marble as a metamorphosed accretionary complexe related to Silurain-Devonian southward accretional and collisional event. The latter is composed of an accretionary complex and an overlain Qitai Daban forearc basin, which records a southward accretional and finally collisional events between the Tarim block to the north and the Karakoram-Qiangtang block to the south. The complicated accretional and collisional processes have added huge materials to the surface of central Asia continent thus enlarging the Asian continent.