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雁门沟位于四川省阿坝藏族羌族自治州汶川县雁门乡,处于汶川县东北部,发育于龙门山西坡,为岷江上游左侧支流,流向由东南向西北;沟口与岷江交汇处海拔约1352m,流域最高点光光山海拔4632m,相对高度达3280m;流域中游出露着较大面积的震旦系上统灯影组(Zbdn)地层,岩性主要为块状～
Yanmengou is located in Yanmen Township, Wenchuan County, Aba Tibetan and Qiang Autonomous Prefecture, Sichuan Province, and is located in the northeast of Wenchuan County. It developed on the western slope of Longmen Mountain and is the left tributary of the upper reaches of Minjiang River. Its flow direction is from southeast to northwest. The junction of Mizoguchi and Minjiang River is about 1352m above sea level , The highest point of the valley light Guang Shan elevation 4632m, the relative height of up to 3280m; the middle reaches of the basin exposed a larger area of the Sinbad Upper Dedeposition (Zbdn) stratigraphy, lithology is mainly massive ~