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地质概况银洞子铅银矿床位于南秦岭地槽的华力西褶皱带的边缘坳陷.北侧以杨斜-营盘大断裂与秦岭地轴相接,南侧以山阳-凤镇大断裂与秦岭地槽加里东褶皱带相接.两大断裂间出露地层为中、上泥盆统及石炭统,即“柞水系”.区域构造形迹为东西向,中泥盆统构成黑山街-红岩寺复向斜.矿床即赋存于复向斜南翼西端大西沟组含矿地层系一套浅变质海相碎屑-碳酸盐建造中.矿区地层分八层(图1),均呈整合接触,各层间有岩相递变,沉积旋回清楚,韵律发育,具复理式特征.
Geological Survey The Yindongzi lead-silver deposit is located at the margin depression of the Wahli Xift belt in the South Qinling Gully, with the Yangpo-Yingpan Great Fault abutting the Qinling axis in the north and the Sanyang-Fengzhen fault in the south with the Qinling Mountains Gully Fold Belt of Gully. The exposed strata between the two faults are middle-upper Devonian and Carboniferous, ie, “Zhashui River System.” The regional tectonic trace is east-west, and the Middle Devonian is the Montenegro Street- Hongyan Si complex syncline. Deposit that occurs at the western end of syncline southwestern Daxigou Formation ore-bearing strata of a set of shallow metamorphic marine debris - carbonate construction in the mining strata eight layers (Figure 1) All of them were integrated with contact. The lithofacies varied from layer to layer, the sedimentary cycles were clear, the rhythms developed, and the features of polyphysics were complex.