江西银坑W-Ag-Au多金属矿田成矿规律与找矿方向:兼论华南两个成矿系列叠加问题

发布时间：2018-03-04 03:33

本文选题：银坑矿田　切入点：成矿规律　出处：《地学前缘》2017年05期 　论文类型：期刊论文

【摘要】：江西银坑矿田位于南岭—武夷山—赣东北三大成矿带交汇斜接部位,以同时发育钨多金属矿床和银金铅锌锰矿床组合为特色,是南岭地区最重要的贵金属找矿远景区之一。近年来,在成矿系列理论指导下,银坑矿田在破碎带热液脉型贵金属找矿方面取得重要突破,在陆内成矿理论创新方面取得了重要进展。本文系统总结了银坑矿田两类矿床的时空分布规律、成矿期次与控矿要素,结合南岭科学钻探两类矿化的垂向分带特征,阐明了两类矿化组合在三维空间内的分带性,在成矿时间上的集中性(150~160 Ma),是华南中生代两类矿床成矿系列(南岭与花岗岩有关钨锡矿床成矿系列和赣东北与花岗闪长岩有关贵金属成矿系列)在银坑地区时空四维尺度的叠加。按成矿系列之"全位成矿与缺位找矿"理论,进一步指明了银坑地区的找矿方向,即应围绕江背复式岩体在内带寻找张家地式、在接触带寻找岩前式和狮吼山式、在外带寻找画眉坳式钨多金属矿床;在银坑—青塘盆地内围绕推覆构造上下盘开展贵金属找矿,重点部署推覆构造界面内和脉体收敛方向深部的厚大矿体勘查,在高山角和井笔山外围探索斑岩型-爆破角砾岩型矿化规模。
[Abstract]:The Yinkeng Orefield of Jiangxi Province is located at the intersection of the three major metallogenic belts of Nanling, Wuyishan and northeast Jiangxi, and is characterized by the simultaneous development of tungsten polymetallic deposits and the combination of silver, gold, lead, zinc and manganese deposits. In recent years, under the guidance of metallogenic series theory, Yinkeng Orefield has made an important breakthrough in the prospecting of hydrothermal vein type precious metals in broken zone. Important progress has been made in the innovation of continental metallogenic theory. In this paper, the temporal and spatial distribution, metallogenic times and ore-controlling elements of two types of deposits in Yinkeng Orefield are systematically summarized, combined with the vertical zonation characteristics of two types of mineralization in Nanling Scientific drilling. In this paper, the zonation of two types of mineralized combinations in three dimensional space is expounded. It is a metallogenic series of Mesozoic two types of deposits in South China (Nanling and Granitoid related tungsten and tin ore series and northeast Jiangxi Province and granodiorite related precious metal metallogenic series) in Yinkeng area. Four dimensional superposition. According to the theory of "all-position metallogenic and vacancy prospecting" of metallogenic series, The prospecting direction of Yinkeng area is further pointed out, that is, the Zhangjiadi type should be found around the inner belt of the Jiangbei composite rock body, the front rock type and the Shilaoshan type should be searched in the contact zone, and the Thrushcross type tungsten polymetallic deposit should be found in the outer belt. Precious metal prospecting is carried out in Yinkeng-Qingtang basin around the upper and lower face of nappe structure, with emphasis on the exploration of thick and large ore bodies in the interface of nappe structure and deep in the direction of vein convergence. To explore the mineralization scale of porphyry-blasting breccia type in the Alpine corner and the periphery of Jingzhishan.
【作者单位】：中国地质科学院矿产资源研究所国土资源部成矿作用与资源评价重点实验室;中国地质科学院;江西省地质矿产勘查开发局赣南地质调查大队;武警黄金部队第三支队;
【基金】：国家重点研发计划课题(2016YFC0600208) 国家自然科学基金项目(41372092) 国土资源部公益性行业科研专项(201311162,201411050) 全国整装勘查区找矿预测子项目(12120114034801) 全国重要矿集区找矿预测子项目(DD2016005206)
【分类号】：P618.2

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