现代地质2024，Vol.38Issue(4)：934-946,13.DOI:10.19657/j.geoscience.1000-8527.2024.085
基于构造变形岩相带的覆盖区化探资料解释与找矿应用:以广西金秀镍钴多金属矿田为例
Interpretations of Geochemical Exploration Data in Overburden Area Based on Tectonic Deformation Lithofacies Belt and Their Applications:A Case Study of the Jinxiu Nickel-Cobalt Polymetallic Ore Field in Guangxi,China
摘要
Abstract
The geochemical exploration data in covered areas are complicated and challenging to interpret,therefore,calling for strengthened constraints on structural ore-controlling factors.The outcroping extent of tec-tonic traces in various types of overlying areas varies,making it essential to extract distribution information of ore-bearing tectonic deformation lithofacies belts from multiple levels of the tectonic systems.Based on the evo-lutionary characteristics of the geomechanical tectonic system,a novel approach is proposed to identify favorable ore-bearing structure trends in overlying area,and to interpret metallogeny from geochemical exploration data,and to delineate prospecting more efficiently target areas.Firstly,the structural traces of ore field and the met-allogeny of hydrothermal deposits are interpreted using known geological,remote sensing,and geophysical da-ta.Secondly,the direction of principal stress can be determined based on the characteristics of the tectonic stress field during the mineralization period.Thirdly,the tensional-shear and tensional-tectonic deformation lithofacies belts can be identified as favorable ore-bearing structures.Finally,based on the data processing re-sults,the anomalous area for ore prospecting is identified.This method has been applied to the Jinxiu nickel-cobalt polymetallic ore field in Guangxi,identifying two main ore-bearing structural directions.The NWW-EW-NEE and NW-NNW trending fractures were formed in different periods.These fractures controlled nickel-cobalt polymetallic veins enriched in arsenide and sulfide,respectively.This method and prospecting approach can be further promoted in mineral exploration in covered areas.关键词
覆盖区/地球化学勘查/构造变形岩相/构造体系/找矿预测/广西金秀Key words
overburden area/geochemical exploration/tectonic deformation lithofacies/tectonic system/pros-pecting prediction/Jinxiu,Guangxi分类
天文与地球科学引用本文复制引用
张宝林,吕古贤,沈晓丽,张壮,曹明坚,黄新硕,苏艳平,贾文臣..基于构造变形岩相带的覆盖区化探资料解释与找矿应用:以广西金秀镍钴多金属矿田为例[J].现代地质,2024,38(4):934-946,13.基金项目
科技部国家重点研发计划项目专题(2022YFC2903503) （2022YFC2903503）
中国科学院知识创新工程重要方向项目(KZCX2-YW-Q04-03) （KZCX2-YW-Q04-03）
中国科学院地质与地球物理研究所自主创新项目(31351460) （31351460）
山东省自然科学基金项目(ZR2020QD030) （ZR2020QD030）
内蒙古自治区地质勘查基金管理中心科研项目(2019-KY02) （2019-KY02）
云南伟力达地球物理勘测有限公司科研项目(51650930) （51650930）
四川恒康矿业有限公司科研项目(51741170). （51741170）
