| 滇西北香格里拉市红牛—红山铜矿勘查系统模型 |
| |
| 引用本文： | 周云满,张长青,付文超,刘欢,解通,彭惠娟,董文伟,陶兴雄.滇西北香格里拉市红牛—红山铜矿勘查系统模型[J].地质找矿论丛,2020,35(3):259-272. |
| |
| 作者姓名： | 周云满 张长青 付文超 刘欢 解通 彭惠娟 董文伟 陶兴雄 |
| |
| 作者单位： | 云南黄金矿业集团股份有限公司, 昆明 650299;中国地质科学院矿产资源研究所, 北京 100037;成都理工大学, 成都 610081 |
| |
| 基金项目： | 云南省"云岭学者"科研项目和云南黄金矿业集团股份有限公司科研项目"滇西地区金多金属矿成矿规律及成矿系列研究"（编号：E1107）联合资助。 |
| |
| 摘 要： | 滇西北红牛—红山铜矿床是义敦—沙鲁里岛弧上与晚白垩纪中酸性侵入体有关的典型的斑岩矽卡岩热液型铜矿床。本文通过对其成矿地质背景、矿床地质特征、矿化富集规律及成矿模式、矿床地球物理和地球化学特征的综合研究,建立了红牛—红山铜矿床的“大比例尺地质填图和综合研究+重力+激电和高精度磁测+土壤化探测+工程验证”组合勘查技术方法、“燕山晚期石英二长斑岩+接触带矽卡岩和层间破碎带矽卡岩+重力低异常+高磁异常+高视极化率和低视电阻率异常+Cu-Mo-Pb-Zn-Ag-Au等元素综合异常”组合勘查模型。地质调查研究确定矿床成矿地质体和找矿地质体、矿化类型及其空间分布规律,建立矿床“四位一体”的成矿模式和区域矿区地质找矿模型。区域中小比例尺的土壤化探测量确定区域找矿靶区,大比例尺土壤化探测量进一步缩小找矿靶区,逼近矿体赋存部位。矿区处于1∶5万土壤测量圈定的Cu-Pb-Zn-Mo-Au-Ag元素综合高异常区,1∶2.5万土壤测量圈出Cu-Pb-Zn-Ag-W元素综合异常面积较大、强度高、浓集中心明显、元素套合好,与矿区铜(铁)矿体赋存区域异常相对应。区域重力低异常区和正磁异常强度高区域是重要的找矿靶区,矿区大比例尺磁异常和激电异常区确定了矿体的空间位置和产状;矿区铜(铁)矿体赋存区为低视电阻率、高视极化率异常区,高精度磁测表现为正负磁异常相伴。矿区地质地球化学地球物理综合勘查模型对矿区深边部找矿起到重要的指导作用。
|
| 关 键 词： | 红牛—红山铜矿床 斑岩矽卡岩型 综合研究 勘查系统模型 滇西北地区 |
| 收稿时间： | 2020/3/4 0:00:00 |
The exploration system model of the Hongniu-Hongshan copper deposit in northwestern Yunnan province |
| |
| ZHOU Yunman,ZHANG Changqing,FU Wenchao,LIU Huan,XIE Tong,PENG Huijuan,DONG Wenwei,TAO Xingxiong.The exploration system model of the Hongniu-Hongshan copper deposit in northwestern Yunnan province[J].Contributions to Geology and Mineral Resources Research,2020,35(3):259-272. |
| |
| Authors: | ZHOU Yunman ZHANG Changqing FU Wenchao LIU Huan XIE Tong PENG Huijuan DONG Wenwei TAO Xingxiong |
| |
| Institution: | Yunnan Gold & Mining Group Co. Ltd., Kunming 650299, China;Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China;Chengdu Center of China Geological Survey, Chengdu 610081, China |
| |
| Abstract: | The Hongniu-Hongshan copper deposit in northwest Yunnan is a typical porphyry-skarn hydrothermal copper deposit related to the late Cretaceous intermediate-acid intrusions in the Yidon-Shaluli island arc. It is studied on metallogenic and geological background, geological characteristics, enrichment pattern and the metallogenic model. Geophysical and geochemical characteristics and geological mapping at large scale + gravity + IP and high-precision magnetic survey +soil geochemical exploration + engineering validation technical method, and late Yanshan quartz monzonite porphyry + contact zone skarn and interlayer fracture zone skarn+ low gravity anomaly + high magnetic anomaly + low apparent resistivity and high apparent polarizability+ Cu-Mo-Pb-Zn-Ag-Au composite anomaly prospecting model were established. The ore-hosted and prospecting geological bodies are located by geological survey and study, combination of four factors into one metallogenic model and mining district and regional prospecting model established by mineralization types and their spatial distribution, regional prospecting targets located by regional soil geochemical survey at medium-small scale, shrinking target to approach ore body by soil geochemical survy at large scale. High Cu-Pb-Zn-Mo-Au-Ag anomaly area in the property and large areal Cu-Pb-Zn-Ag-W anoly with high intensity, clear concentration centers and well-fit element anomalies by soil geochemical survey at sacle 1:25000 are compoundant to Cu(Fe) ore bodies in the property. The areas with low gravity anomaly and high positive magnetic anomaly intensity are important target areas, the spatial location and occurrence of ore body are determined by magnetic anomaly and the IP anomaly at large scale. The areas where Cu(Fe) orebody occur are characterized by low apparent resistivity and high apparent polarizability and accompanied positive and negative magnetic anomalies of high precision magnetic measurement. The geological-geochemical-geophysical comprehensive exploration model plays an important guiding role in the ore prospecting in surrounds and to depth of Hongniu-Hongshan copper deposit. |
| |
| Keywords: | Hongniu-Hongshan copper deposit porphyry-skarn type comprehensive research exploration system model northwest Yunnan province |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《地质找矿论丛》浏览原始摘要信息 |
| 点击此处可从《地质找矿论丛》下载免费的PDF全文 |
|
