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辽南金伯利岩的磁异常特征
引用本文:刘世义,孙吉生.辽南金伯利岩的磁异常特征[J].地质科技情报,1993(Z1).
作者姓名:刘世义  孙吉生
作者单位:辽宁省地质矿产局第六地质队 普兰店116200 (刘世义),辽宁省地质矿产局第六地质队 普兰店116200(孙吉生)
摘    要:根据1:2.5万航磁资料,分析和总结了辽南已知金伯利岩矿田区的区域磁场特征,同时对该区区域地质构造状况作了相应的对比解释;以本区两大典型金伯利岩管kb42和kb50为例,阐述了本区表露型金伯利岩管的航磁及地磁异常分布特征、岩管产出状态与磁异常的对应关系;通过kb3-2隐伏金伯利岩体的航磁及地磁异常反映,阐述了隐伏金伯利岩体的低缓磁异常特征,并进一步证实了高精度磁测工作的有效性。

关 键 词:磁异常  对比解释  高精度磁测  金伯利岩管

MAGNETIC ANOMALIES OF KIMBERLITE IN SOUTHERN LIAONING
Liu Shiyi,Sun Jisheng.MAGNETIC ANOMALIES OF KIMBERLITE IN SOUTHERN LIAONING[J].Geological Science and Technology Information,1993(Z1).
Authors:Liu Shiyi  Sun Jisheng
Abstract:This paper analyzes and summarizes the properties of regional magnetic field in known kimberlite areas on the basis of aeromagnetic data with a scale of 1: 25 000, and then makes a comparative interpretation of the regional geological structural conditions. Two typical kimberlite pipes(kb42and kb50)are used as examples to demonstrate the distribution of aeromagnetic and ground magnetic anomalies of the out crapped kimberlite pipes, the corresponding relations between the kimberlite pipe occurrence and the magnetic anomalies. In consideration of the aeromagnetic and ground magnetic anomalies of the kb30-2 blind kimberlite mass, the authors finally present a discussion of the characteristics of low intensity magnetic anomalies of the blind kimberlite mass, confirming the effectiveness of high accuracy magnetic survey.
Keywords:magnetic anomaly  high accuracy magnetic survey  kimberlite pipe  comparative interpretation  
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