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一、矿区地质及复土情况本区岩层主要有前寒武纪灰岩,白垩纪凝灰岩及火山角砾岩,以及燕山期花岗斑岩,其次还有煌斑岩、千枚岩和其他基性岩脉等在测区内断绩出露。区内燕山期花岗斑岩与前寒武纪灰岩二者成一东西向接触带。在其附近灰岩中往往有火成岩的小型侵入体出现,并且在二者的接触线上火成岩常呈舌状穿插在灰岩里。在接触带上有矽卡岩化、矽化以及褐铁矿化等围
I. Geology and remediation of mining areas There are Precambrian limestone, Cretaceous tuff, volcanic breccia and Yanshanian granite porphyry in this area, followed by lamprophyre, phyllite and other base Sex dikes in the survey results such as dew. The Yanshanian granite porphyry and the Precambrian limestone in the area have an east-west contact zone. In the nearby limestone, small intrusions, often with igneous rocks, emerge, and igneous rocks are often tongue-like intercalated into the limestone on the contact line between the two. In the contact zone with skarnization, silicification and limonite and other Wai