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从超宏观镶嵌的卫星影象图中,可以清渐地观察到,在秦岭以北,长城以南,以及甘肃的庆阳、平凉等地区范围,显示出一个巨大的圆形影象,称之为陕北大圆环构造。同时,还可以看到在圆环构造的南缘,即秦岭与关中盆地内存在着与圆环构造有关的一组“X”剪切断裂。再舒展视域,还可以看到,北自河套地区,南至长江,伴依陕北大圆环构造还分布着数个颇具规模的环形构造(图1、版图3)。如长城以北的伊克昭盟环形构
From the ultra-macro inlaid satellite imagery, it can be gradually observed that in the area north of the Qinling Mountains, south of the Great Wall and Qingyang, Pingliang, Gansu Province, it shows a huge circular image, which is called For the northern Shaanxi ring structure. At the same time, a series of “X” shear fractures related to the ring structure exist in the southern margin of the ring structure, that is, in the Qinling and Guanzhong basins. Re-stretch the field of vision, you can also see the north from the Loop area, south to the Yangtze River, accompanied by a large ring structure in northern Shaanxi also distributed a number of large-scale ring structure (Figure 1, Figure 3). Such as the Ik Zhaomei ring north of the Great Wall