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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:

第43卷

期数:

2021年第05期

页码:

800-813

栏目:

基础地质与矿产地质

出版日期:

2021-09-15

文章信息/Info

Title:

Application of Comprehensive Tectonic Lithofacies Exploration Method in Cuprita Copper Deposit, Bolivia

文章编号:

1672-6561(2021)05-0800-14

作者:

杜玉龙¹; 2; 方维萱^3*

(1. 五矿勘查开发有限公司,北京 100010; 2. 中色地科矿产勘查股份有限公司,北京 100012; 3. 有色金属矿产地质调查中心,北京 100012)

Author(s):

DU Yu-long¹; 2;  FANG Wei-xuan^3*

(1. Minmetals Exploration and Development Co., Ltd., Beijing 100010, China; 2. Sinotech Minerals Exploration Co., Ltd., Beijing 100012, China; 3. China Non-ferrous Metals Resource Geological Survey, Beijing 100012, China)

关键词:

矿产勘查;  综合构造岩相学填图;  岩浆侵入构造;  异常评价;  工程验证;  找矿潜力;  古布利达铜矿床;  玻利维亚

Keywords:

mineral exploration;  comprehensive tectonic lithofacies mapping;  tectonic of magmatic intrusion;  anomaly evaluation;  engineering verification;  prospecting potential;  Cuprita copper deposit;  Bolivia

分类号:

P624

DOI:

10.19814/j.jese.2020.11030

文献标志码:

A

摘要:

古布利达铜矿床位于安第斯成矿带中段斑岩型铜金矿床和浅成低温热液型金铜-铅锌矿床集中分布区。由于地形切割大,海拔高以及自然环境恶劣,给找矿勘查增加了难度。以构造岩相学分析研究为思路,将遥感解译-构造岩相学路线观测、沟系次生晕测量、地质填图、构造岩相学解析研究等方法综合应用于古布利达铜矿床找矿。结果表明:①综合构造岩相学勘查技术在玻利维亚高原特殊景观区进行找矿勘查具有准确和快速高效特点; ②通过遥感解译-构造岩相学路线观测,圈定了火山穹隆构造、断裂构造,初步建立了填图单元和对应的遥感异常色斑标志; ③通过大比例尺地质填图,确定了含矿地层、含矿岩相和储矿构造样式,圈定了矿化蚀变带,揭示了矿化蚀变带走向和倾向,为探槽和钻孔验证提供了设计依据; ④通过探槽揭露了浅部矿体,评价了化探异常,进一步确定了矿体产状,经钻探验证,控制到厚大铜矿体; ⑤在对探槽和钻孔岩芯构造岩相学编录基础上,进行了构造岩相学解析研究,预测深部具有寻找斑岩型铜矿床的潜力。综合构造岩相学勘查技术为玻利维亚高原地区快速、高效勘查技术方法选择提供了支撑,也为境外同类型铜矿床勘查提供了借鉴。

Abstract:

Cuprita copper deposit is located at the middle of Andean metallogenic belt, where distribute many porphyry copper-gold deposits and epithermal gold-copper-lead-zinc deposits. Due to largely cut topography, high altitude and harsh natural environment, it is more difficult for prospecting and exploration. Based on tectonic lithofacies research and analysis, the remote sensing-tectonic lithofacies interpretation route observation, valley system secondary halo soil survey, geology mapping and tectonic lithofacies analysis were used for prospecting predictions in Cuprita copper deposit. The results are as follows. ① Comprehensive tectonic lithofacies analysis is a fast and efficient exploration methods for minerals exploration in Bolivian plateau special scenic area. ② Through remote sensing-tectonic lithofacies interpretation route observation, the volcanic dome faults and mineralized alteration are delineated, the mapping units and corresponding remote sensing abnormal color spot sign are established. ③ By geological mapping on a large scale ore-bearing strata, the ore-bearing lithofacies and ore-storing structural styles are determined, occurrence of mineralized alteration zone is showed in the anomaly area, the trend and tendency of mineralized alteration zone are revealed, which provides a design basis for probing trough and borehole verification. ④ Shallow ore bodies are exposed, geochemical anomalies are evaluated by probing trough, and the occurrence of ore body is further determined. Through borehole verification, it is controlled to thick and large copper ore bodies. ⑤ On the basis of tectonic lithofacies cataloging of probing trough and borehole cores, the analytical study of structural petrography is carried out, and it is predicted that there is a potential to search for porphyry copper deposits in the deep. Comprehensive tectonic lithofacies exploration method is fast and efficient in Bolivia plateau, meanwhile provides a reference example for exploration of the same type copper deposit abroad.

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相似文献/References:

[1]刘磊,施明,周军,等.遥感、化探、地质信息综合在昌宁矿产勘查中的应用[J].地球科学与环境学报,2007,29(04):383.
　LIU Lei,SHI Ming,ZHOU Jun,et al.Synthetic Analyses of Remote Sensing,Geochemical Surveying Data and Geology in Ore Exploration in Changning[J].Journal of Earth Sciences and Environment,2007,29(05):383.

备注/Memo

备注/Memo:

收稿日期:2020-11-15; 修回日期:2020-12-22投稿网址:http:∥jese.chd.edu.cn/
基金项目:自然资源部行业性科研基金项目(201511016-1); 中战会(北京)矿业科技有限公司玻利维亚勘查项目(2016001)
作者简介:杜玉龙(1984-),男,陕西铜川人,高级工程师,工学博士,E-mail:sunnyman0511@163.com。
*通讯作者:方维萱(1961-),男,陕西蓝田人,教授级高级工程师,博士研究生导师,理学博士,E-mail:569026971@qq.com。

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