斜切塔里木、阿拉善地块的北山裂谷,位于新疆巴音郭楞蒙古自治州东南,长约1800公里,从西南于田县东南向北东经民丰、且末直达北山一段较为明显,宽约20～40公里。属北东向构造体系的西延部分,由于它在北山表现明显,由一系列北东向谷地组成,故此得名。在地质构造发展史上,它具有独特的发展特征。火山活动频繁,第三、四系也被断开,组成一系列北东向谷地,高达10～15米。从卫星象片和航片上看,沿阿尔金山山前 Beveling Tarim, Alashan Block North Hill rift, Xinjiang Bayingolin Mongolian Autonomous Prefecture southeast of about 1800 km long, from southeast Yutian County to the northeast by Minfeng, and the end of a direct Beishan a more obvious, wide 20 ~ 40 km. It is named after the westward extension of the north-east tectonic system because of its apparent performance in Kitayama and a series of NE-trending valleys. In the history of geological structure development, it has unique characteristics of development. Frequent volcanic activities, the third and fourth lines have also been disconnected to form a series of North East Valley, up to 10 to 15 meters. From satellite photos and aerial photos, along the Altun mountain