| 徐书奎.河南省崤山地区金银矿床控矿构造特征与成矿模式[J].地质与勘探,2019,55(6):1356-1366 |
| 河南省崤山地区金银矿床控矿构造特征与成矿模式 |
| Characteristics of ore-control structures and a metallogenic model of gold-silver deposits in the Xiaoshan area, Henan Province |
| 投稿时间：2018-07-30 修订日期：2019-09-06 |
| DOI：10.12134/j.dzykt.2019.06.002 |
| 中文关键词: 崤山 金银矿床 控矿构造 成矿模式 双控 |
| 英文关键词: Xiaoshan area, gold-silver deposit, ore controlling structure, metallogenic model, double – control |
| 基金项目:河南省2014年度“两权价款”地质科研类项目（豫国土资函[2015]258号，编号：04）、河南
省国土资源自筹经费科研项目（豫国土资发[2016]54号，编号：地质矿产类03）与河南省有色金属地质矿产局2018年重点项目（豫色地矿办[2018]30号，编号：zd2018-2）共同资助。 |
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| 中文摘要: |
| 崤山位于华北陆块南缘，是河南省重要的有色金属成矿区.为进一步明确崤山地区控矿构造特征，分析探讨成矿就位机制，指导崤山地区中深部地质找矿工作,本文对崤山地区矿床地质特征、构造性质等要素进行了分析研究，将崤山地区控矿构造分为拆离断层控矿构造、韧性剪切带控矿构造和张扭性断裂控矿构造三类：①拆离断层沿太古界太华岩群的结晶基底与中元古界熊耳群盖层间发育，带内发育糜棱岩，崤山北部主要含矿石英脉多发育在紧靠拆离断层带下盘的太华岩群中，矿体就位于拆离剪切形成的拆离断层及其次级断裂带中；②韧性剪切带主要位于崤山中西部和北部，早期呈压扭特性，发育绿泥片岩质初糜棱岩、糜棱岩、花岗质超糜棱岩等，申家窑韧性剪切带晚期表现为张性特征，在其下盘发育有多组与其走向一致的羽列状次级断裂构造，矿体就位于韧性剪切带及其下盘雨状次级断裂带中；③张扭性断裂多发育于崤山中东部，断裂内充填有含金石英脉条带，围岩中多具绿泥石化、绿帘石化、钾化、黄铁矿化等，矿体就位于张扭性断裂带中。按照岩体、构造对成矿的作用关系，建立了崤山地区以深源岩浆为流体、以构造侵位为空间的“双控”成矿模式，指出韧性剪切带、拆离断层带中深部及其次级断裂带是寻找脉型金银矿床的有利地段，燕山期中酸性侵入岩体周缘有斑岩型铜钼矿成矿潜力。 |
| 英文摘要: |
| Located in the southern margin of the North China block, the Xiaoshan area is an important nonferrous metallogenic zone in Henan Province. The purpose of this work is to further clarify the characteristics of ore-control structure, analyze the metallogenic emplacement mechanism, and shed light on prospecting deep-seated ore in this area. Based on geological characteristics and structural properties of the deposits, the ore-control structures in the area are divided into three types: detachment faults, ductile shear zones and tensional-shear faults. The detachment faults are present between the crystalline basement of the Archean Taihua Group and the cover of the Mesoproterozoic Xionger Group with mylonite. The main ore-bearing quartz veins in the northern Xiaoshan area are mostly found in the Taihua Group close to the footwall of the detachment fault zones, while orebodies are located in the detachment fault and its secondary faults. The ductile shear zones lie in the central, western and northern Xiaoshan area. In the early stage, they exhibited compressive-shear characteristics and contained chlorite schist primary mylonite, mylonite and granitic ultramylonite. In the late stage, the ductile shear zone of Shenjiayao was characterized by tension with several groups of pinnate secondary faults in its footwall wall consistent with its strike, and orebodies are located in the ductile shear zone and feather secondary fault zone in the footwall. Tensile-shear faults mostly developed in the middle and eastern Xiaosahn area, which are filled with gold-bearing quartz veins, and the surrounding rocks are mostly chlorite, epidote, potassium and pyritization, and ore bodies just lie in extensional-shear faults. According to the relationship between rock mass, structure and mineralization, a dual-control metallogenic model with deep-source magma as fluid and tectonic emplacement as space is established for the Xisoshan area. And it is pointed out that the ductile shear zone, the middle and deep part of the detachment fault zone and its secondary faults are favorable places for prospecting vein-type gold-silver deposits. Porphyry copper-molybdenum deposits are expected to be discovered in the periphery of Yanshanian intermediate-acid intrusive rocks |
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