摘要:
基于HS26异常地区的90个钻孔3312个样品的极化率数据统计结果,发现该区变质岩、侵入岩的极化率很低,蚀变作用仅微略改变极化率,但矿化作用却使极化率发生显著的增加,高极化率是高矿化程度的反映。通过极化率与成矿元素镍、铜、钴含量的剖面分布对比发现,高极化率异常中心与成矿元素浓集中心具有对应关系,说明高极化率分布区是矿体的反映。据此,进一步分析了极化率的空间分布,寻找未封闭的高极化率异常,HS26异常区下一步的勘探宜跨过辉绿岩脉,继续向西南侧变质岩覆盖区进行勘探,从靠近未封闭的高极化率异常的ZK2305、ZK2303孔开始,向西、向深部追索矿体。
关键词:
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东昆仑
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夏日哈木
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极化率
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勘探部署
Abstract:
Statistics based on HS26 abnormal area of 90 drill holes and 3 312 samples of polarizability data show that the polarization rate of metamorphic and intrusive rocks in this region is very low, alteration only slightly changes the polarization rate, but mineraliza?tion causes significant increase of polarization incidence, so that the high polarizability is indicative of high mineralization degree. A comparison between the polarizability and metallogenetic elements nickel, copper and cobalt content in the profile distribution reveals the corresponding relationship between the high polarization rate of abnormal center and metallogenic element concentration center, and it suggests that the high polarizability distribution area is the reflection of the orebody. Accordingly, the authors further analyzed the spatial distribution of the polarizability and looked for the end of the closed high polarizability anomaly. It is pointed out that further ex?ploration of HS26 anomaly area should cross diabase dikes and continue to the southwest side of the metamorphic rocks of the coverage area, and it should begin from the end of the closed high polarizability anomalies as well as from ZK2305 and ZK2303 holes and extend westward to trace the deep orebody.
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