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一、超基性岩体的形态特征及与构造的关系甘肃镜铁山附近共出露超基性岩体100余个。除极少数岩体的面积大于10平方公里外,绝大多数面积为0.5～1.5平方公里的小岩体。所有的岩体均属陡倾斜岩体,倾角65°～85°。侵入时代为加里东期。区内超基性岩体,总体方向沿祁吕系呈北西西～南东东方向延伸,
First, the morphological characteristics of ultramafic rocks and the relationship with the structure A total of more than 100 ultramafic rocks are exposed near the mirror iron Tieshan, Gansu. In addition to a very small area of rock more than 10 square kilometers, most of the area of 0.5 to 1.5 square kilometers of small rock mass. All of the rock mass is steeply inclined rock mass with a dip angle of 65 ° ~ 85 °. The invasion of Caledonian era. The ultramafic rocks in the area have an extension from northwest to south ~ east and east along the QiLu line,