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安多北断裂是青藏高原中部安多—错那盆地的北边界断裂(图1)。安多—错那盆地是青藏高原中部当雄—羊八井活动构造带北端的一个断陷盆地,盆地的北缘和南东缘分别为安多北断裂、安多南断裂和错那东断裂,这些断裂均为全新世活动断裂,安多北断裂和安多南断裂控制形成安多盆地,错那断裂控制形成错那盆地。安多盆地总体呈NNE走向,长约80km,南北宽约6～15km,盆地面的海拔高程为4580～4700m,呈东北部高、西南部低的趋势。以前的活动构造研究多集中在当雄—羊八井活动构造带的主体部分,如对念青
The Anduo North fault is the northern boundary fault of the Ando-Erina basin in the central Qinghai-Tibet Plateau (Figure 1). The Ando-Erna basin is a faulted basin formed at the northern end of the Dangxiong-Yangbajing activity tectonic belt in the central Qinghai-Tibetan Plateau. The northern margin and the southern margin of the basin are respectively the Ando North Fault, the Andonan Fault and the Faulty Fault East These faults are all active faults of the Holocene. The Ando Bei fault and Andonan fault control form the Anduo Basin, and the faulty fault control forms the fault basin. The Amdo Basin is generally NNE-trending with a length of about 80km and a width of 6-15km between north and south. The elevation of the basin surface is 4580-4700m, showing a trend of high in the northeast and low in the southwest. Most of the previous research on tectonic activities mainly focused on the main part of the active structure of the Yangxiong-Yangbajing tectonic belt,