| 刘伟.黑龙江省东安金矿地球物理勘查应用效果[J].地质与勘探,2010,46(4):657-663 |
| 黑龙江省东安金矿地球物理勘查应用效果 |
| Application of Geophysical Methods to Exploration at the Dong爷anGold Deposit, Heilongjiang Province |
| 投稿时间：2010-01-22 修订日期：2010-06-11 |
| DOI： |
| 中文关键词: 低硫浅成低温热液型金矿 硅化蚀变岩 高精度磁法 电阻率法 东安 |
| 英文关键词: low sulphidation,epitheral Au deposit,silicon alternation rocks,high-precision magnetic measurement,resistivity method,Dong爷an |
| 基金项目: |
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| 摘要点击次数: 2255 |
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| 中文摘要: |
| [摘要]东安金矿为一大型低硫浅成低温热液型金矿床,矿体产于印支晚期碱长花岗岩和早白垩
世中酸性火山~ 侵入杂岩接触部位的强硅化蚀变岩中。在矿床普查和详查过程中,利用高精度磁法确
定蚀变矿化带,利用电阻率中梯追索圈定含金强硅化蚀变带,利用对称四极和偶极装置电剖面及高密度
电阻率法判断矿体倾向及埋深。获得的物探异常规模大、强度高、结构清晰,高阻异常带、正负磁场过渡
带或磁力低区与矿体、矿化体空间位置对应关系良好。根据物探异常布置槽探及钻探工程见矿效果良
好,地球物理勘查有效地指导了山地工程施工 |
| 英文摘要: |
| Abstract:The Dong爷an gold deposit is a large-scale low sulphidation epitheral Au deposit in Heilongjiang Province. It occurs in the intermediate-a鄄
cidity volcanic-invasion rock and the silicon alternation zone of the late Indo-China epoch alkali-feldspar granite. In the process of general survey and de鄄
tailed investigation,the mineralized alteration zone is delineated by high-precision magnetic survey,the strong silicified gold-bearing alteration zone is i鄄
dentified with the resistivity method using central-gradient array,the tendency and depth of ore bodies are judged by the resistivity method based on
Schumberger array and dipole-dipole array as well as the high density resistivity method. Large-scale and high-amplitude geophysical anomalies reveal a
clear structure. There are good corresponding relations between the low magnetic field or positive and negative magnetic field gradient zones or the high re鄄
sistivity anomaly zones and ore bodies or mineralization bodies in spatial positions. The result demonstrates that the geophysical prospecting is very effective
to guide the trenching and drilling work,and a large number of ore bodies are found according to the geophysical anomalies. |
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