论文部分内容阅读
当我们观察成都幅卫星象片时,从乐山市沿岷江的支流青依江溯江而上至洪雅、雅安一带,可以看到有一个圆形的环状构造,直径约58公里面积约2690平方公里,丹棱、名山、雅安各县分布在其边缘部位,青依江横穿环状构造中部,其北侧为低山丘陵,南侧为山区,由于雅安位于环状构造的西部,故我们称之为“雅安环状构造”。从卫星象片上可以清楚地看到,由新津向南西方向,分布着一条走向为N40°E的狭长山梁,纵观山梁整体,犹如茫然长堤,崛伸于百里平原之中,历来引人注目,这就是被称为有
When we observe the satellite image of Chengdu, we can see that there is a circular ring-shaped structure with a diameter of about 58 km and an area of about 2690, from the tributary of Leshan along the Minjiang River up to Hongya and Ya’an. Square kilometers, Danleng, famous mountains, Ya’an counties located in the edge parts of the Qing Yi River crossing the middle of the ring structure, the northern side of the hilly, south of the mountain, because Ya’an is located in the western ring structure, so We call it “Yaan circular structure.” From the satellite images, we can clearly see that from Xinjin to the southwest, there is a narrow and long mountain beam running towards N40 ° E. Looking at the whole mountain beam looks like a dazed long bank, Attention, this is what is called