摘要
南戈滩矿区覆盖较厚,采用单一物探方法的找矿效果不佳。为了查清矿区已知铜、铁矿脉深部延深情况,了解矿区西部覆盖区铜、铁矿脉分布及延深情况,采用高精度磁法测量和激电中梯测量方法在矿区进行综合找矿,圈定磁异常3处,激电中梯极化率异常2处,并对磁异常进行化极、延拓,对Z3-1、Z3-2、Z3-3号磁异常、ηS-1号极化率异常及矽卡岩化带进行验证,布设钻孔7个,其中,4个钻孔见铜、铁矿体,1个钻孔见铅、锌矿体。通过对比研究见矿钻孔与磁、电异常的关系,发现多金属矿能同时引起磁、电异常,证实磁电综合找矿效果显著,值得推广应用。
The prospecting effect isn＇t good and a single method have no effect due to the thick cover in Nangetan ore area.In order to find out the extension of the known copper-iron ore veins and understand the distribution and extension of copper-iron ore veins in west coverage area,high accuracy magnetic survey and IP intermediate gradient survey were conprehensively used for propecting,and three magnetic anomalies and two IP anomalies were delimited.These magnetic anomalies are processed with reduction to the pole and continuation.Drilling holes were used to test magnetic anomalies Z3-1 ,Z3-2,Z3-3,IP anomaliy ηs-1 and skarn belt.Among seven drilling holes, four reached copper-iron ore bodies and one reached lead-zine ore body.By contrasting the relationship of these anomalies and holes which reached ore,this paper conclude that polymetallic deposit can cause magnetic and electric anomalies.It proves intergrated methods having synergic effect and worth spreading.
出处
《黄金科学技术》
CSCD
2013年第5期40-45,共6页
Gold Science and Technology
基金
中国地质调查局资源潜力评价项目"青海省都兰-同德-甘德一带金及多金属资源潜力评价"(编号:HJ2002-01)资助
关键词
磁电综合方法
矿产勘查
南戈滩多金属矿
青海省
magnetic and electric intergrated method
mineral exploration
Nangetan ploymetallic deposit
Qinghai Province
