| 甘凤伟,王京彬,朱思才,秦秀峰.埃塞俄比亚北部VMS型铜多金属矿快速勘查方法[J].矿产勘查,2018,9(8):1611-1621 |
| 埃塞俄比亚北部VMS型铜多金属矿快速勘查方法 |
| Rapid Exploration Methods of VMS Type of Cu Polymetallic Deposits in Northern Ethiopia |
| 投稿时间：2018-03-26 |
| DOI： |
| 中文关键词: 埃塞俄比亚 VMS型 铜多金属矿 勘查方法 |
| 英文关键词: Ethiopia, VMS type, Cu polymetallic deposit, Exploration methods |
| 基金项目:中央勘查基金境外矿产资源风险勘查项目(编号:10254B014和201121B05400014)资助。 |
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| 中文摘要: |
| 海外风险勘查中,快速有效的勘查方法组合是初级勘查项目取得成功的关键因素。本文以埃塞俄比亚北部VMS型铜多金属矿床找矿为例,介绍该区海外快速勘查方法组合。从区域已知矿床地质背景研究到不同比例尺遥感填图—地质填图—岩相填图,总结与成矿密切相关的地层、岩浆岩、构造标志、蚀变和矿化标志；通过不同比例尺的水系沉积物、土壤和岩石地球化学测量,在勘查中快速锁定靶区；通过激发极化法(IP)、重力测量(Gravity Survey)及电磁测量(EM)的地球物理特征确定矿体的埋深、形态及侧伏方向等参数；通过钻探工作,建立矿床的三维地质模型、矿体模型,估算铜多金属资源量,为下一步矿床开发提供资源保障。 |
| 英文摘要: |
| Among overseas venture prospecting, rapid and efficient exploration methods combination is the key to success for junior prospecting projects. As the example of prospecting for VMS type of Cu polymetallic deposit in northern Ethiopia, this paper mainly introduces the following rapid exploration methods. To establish stratigraphic, structural, magmatic, alteration and mineralization marks closed related to ore-forming, from research on geological background of known deposits in the region to remote sensing mapping-geological mapping-lithofacies mapping of different scales. To rapid delineate the prospecting targets by sediment, soil and rock geochemical survey of different scales. To determine the parameters of depth, shape and plunging of the ore-body by IP, gravity and EM geophysical survey. To set up the geology and ore-body 3D models, by borehole drilling so as to estimate Cu polymetallic resources, which provides the metal resources for the deposit mining in the future. |
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