摘要
乌拉嘎金矿是一个大型金矿床,随着生产对探明储量的不断消耗,保有资源已近枯竭,在矿床深部及周边寻找新的隐伏矿体已刻不容缓。然而,由于该矿床形成后,其上覆盖了一层第三系的凝灰岩,以至于在地表使用常规的地球化学方法找矿效果很差。基于烃类气体具有挥发性强、运移距离远、能穿透深厚的盖层、反映深度大,并可在地表形成异常场等特点,我们将烃气测量技术应用于该地区的找矿预测。本文在分析该区烃类气体的背景特征的基础上,通过分析该区烃类组分在空间上与已知矿体之间的对应关系,异常的分带序列,测区异常的展布特征和时空结构,并结合地质和构造特征,对区内的成矿潜力进行了评价,圈定了相关找矿有利靶区。
With long-term continuous consumption by production,the reserve of the Wulaga gold deposit,which has been a large-scale mine,is nearly to exhaust completely. Hence it is urgent to look for some new blind ore bodies at depth deep and surrounding areas of this district. However,due to the later formation of Tertiary tuff covering over the deposit,prospecting effect by general geochemical methods is poor. Based on the features that hydrocarbon has the higher volatile,big migration distance,easier to penetrate thick cap rock and form anomalies on the surface,the hydrocarbon measurement method has been used to forecast the mineralization in this area. According to analysis to the background characteristics of hydrocarbon gases in the area,the correspondence between hydrocarbon components and the known ore bodies in space,the zone subdivision and space-time structural characteristics of anomalies,combined with geological and structural features,this work has evaluated the mineralization potential and outlined some valuable ore prospecting target areas in the region.
出处
《地质与勘探》
CAS
CSCD
北大核心
2010年第3期506-514,共9页
Geology and Exploration
基金
中国黄金集团公司科研项目(2008-0002)资助
关键词
烃气测量
金矿
乌拉嘎
预测评价
hydrocarbon measurement
gold deposit
Wulaga
prediction and evaluation
