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围山城金银矿带包括银洞坡金矿床和破山银矿床。由于金、银矿床明显受地层、岩性控制,而旷化又具有热液成因的特点,因而引起人们的重视。本文主要研究了该矿带的层控特征和成矿作用。一、矿带地质特征围山城金银矿带位于秦岭东西复杂构造带东段南支。区内分布的上元古界为一套地槽型变质火山-沉积岩系。歪头山组(Pt_3w)为含矿岩系,构成北西向河前庄背斜。上覆大栗树组(Pt_3d)为变质火山岩——
Wai Shan City gold and silver belt, including Yin Dongpo gold deposit and broken silver deposit. As gold and silver deposits obviously controlled by stratigraphy and lithology, and the fact that they are also characterized by the genesis of hydrothermal fluids have attracted people’s attention. This paper mainly studies the stratigraphic controlling characteristics and mineralization of the ore belt. First, the geological characteristics of mineral deposits Wai Shan City gold and silver belt located in the eastern part of the Qinling Mountains with the eastern branch of the complex structure. The Proterozoic distribution in the area is a set of geosyncline volcanic-sedimentary rock series. The Waitoushan Formation (Pt_3w) is an ore-bearing rock series that forms a Qianxiazian anticline in the northwest direction. The overlying chestnut tree group (Pt_3d) is a metamorphic volcanic rock-