马尔洋地区康西瓦结合带地质特征

摘要

Kangxiwar Fault is one of most important fault in the main ridge of West Kunlun Mountains in the northwest edge region of qinghai-Tibet plateu,which is the boundary fault between the west Kunlun plate and Karakorun plate. The discovery of jadeitite in Maeryang area, where lies the west section of Kangxiwar junction zone, bisides the find of granulite, confirms further that Kangxiwar junction zone is an ultrahigh-pressure metamorphic complex zone with the characteristic of deep subduction, maybe a western-extended part of the central compound orogenic belt.%康西瓦断裂位于新疆西昆仑地区,为青藏高原西北缘重要断裂构造,构成了西昆仑板块和喀喇昆仑板块边界,前人已在该带发现有麻粒岩.近年来,在康西瓦结合带西段马尔洋地区开展1∶5万区域地质调查,发现了超高压变质硬玉岩,证实其为一板块俯冲带,应为中央复合造山带西延部分.