青海省活动断裂带分布发育特征研究

青海省活动断裂带在印度板块的推挤作用下具有各自不同的空间展布和运动学特征，通过对省内24条活动断裂带的研究，得出NNW向断裂带右旋走滑的同时还具有逆时针旋转的运动特性，柴达木盆地西南边缘的茫崖—油沙山断裂的形成可能是阿尔金断裂带左旋走滑的压应力分量和持续板块推挤在青藏高原北部的一种响应，中更新世以来的构造运动决定了现今青海构造地貌的基本形态，现今高原北部的隆升主要集中在柴达木盆地西侧和祁连山地区，挤压应力分布表现为南北强于中部、东部强于西部。

DEVELOPMENT AND DISTRIBUTION PATTERNS OF ACTIVE FAULT ZONES IN QINGHAI PROVINCE

Active fault zones in Qinghai Province have their own  distribution and kinematic characteristics  under the pushing function of the Indian plate.   This paper is based on the twenty-four active faults in the Province. Most of them are extended to NWW and sinistral strike-slip fault zones. The active fault zones which are extended to the NNW fault zones  are dextral strike-slip and  have the anti-clockwise direction characteristic. Mang'ai to Yousha mountain active fault have the highest vertical velocity. It may be caused by the crushing stress of the sinistral strike-lip of the Altun active fault zone and the pushing function of the Indian plate. Tecto-genesis of Miocene is the cause of the basic tectonic landform in Qinghai province. The up-lift of north Qinghai-Tibet Plateau is mainly located in west Qaidam and Qilian mountain area. The distribution of the extrusion stress register as the north and south part  is more intense than the middle part. The east part is more intense than the west part.