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在巍峨的川西高原,有一条规模巨大的断裂带,它象一柄利剑,劈开松潘—甘孜印支期地槽褶皱区。沿断裂带温泉众多,灾害性地震频繁,这就是广大地质、地震学家瞩目的鲜水河断裂带。该断裂带北西起自青海境内,横跨石渠、甘孜、炉霍、道孚、康定等县后,斜切康滇地轴,继续向南东延伸至石棉以远。长度在500公里以上,走向北40°—50°西,倾向北东,倾角一般大于65°,是一条以压性为主兼具扭性的断裂。断裂带附近出露的岩层主要为三叠系砂泥质岩。破碎带宽度一般在200米以上,最大可达1公里。断裂两侧,岩层揉皱强烈,构造岩发育。在鲜水河断裂带南东段的道孚至塔公长约60公里范围内,广泛发
In the towering western Sichuan Plateau, there is a large-scale fault zone that resembles a sharp sword and splits the geosyncline fold in the Songpan-Garze Indosinian. Many hot springs along the fault zone, frequent catastrophic earthquakes, which is the majority of geology, seismologists attention Xianshuihe fault zone. The fault zone starts from the west of Qinghai Province and runs across Shiqu, Ganzi, Luhuo, Daofu, Kangding and other counties. After diagonal cutting, the axis of Kangdian and Yunnan continues to extend beyond the asbestos to the east. The length of 500 km or more, to the north 40 ° -50 ° west, the northeast tend to dip angle is generally greater than 65 °, is a stress-based both torsional fracture. The strata exposed near the fault zone are mainly Triassic sandstone argillaceous rocks. Broken width of more than 200 meters in general, up to 1 km. On both sides of the fault, the rock layers are crumpled and the tectonic rocks develop. In the south of the Xianshuihe fault zone, the Daofu-Tajagonggou is about 60 km wide and has been widely distributed