磁异常解释中的剩余磁化问题  

REMANENT MAGNETIZATION IN THE INTERPRETATION OF MAGNETIC ANOMALY

作　　者：张昌达[1] 董浩斌[2] 

机构地区：[1]中国地质大学地球物理与空间信息学院,湖北武汉430074 [2]中国地质大学机械与电子信息学院,湖北武汉430074

出　　处：《物探与化探》2011年第1期1-6,共6页Geophysical and Geochemical Exploration

基　　金：863项目(2007AA12Z129)资助

摘　　要：磁铁矿矿石与强磁性火山岩磁性有明显的差别,前者以感应磁化为主,后者以剩余磁化为主。推荐一种利用地磁场变化磁场确定磁异常源磁性特征的方法,评论了几种涉及由剩余磁化引起的磁异常的解释方法。The distinct difference of magnetic properties between magnetite ores and strongly magnetic volcanic rocks lies in the fact that magnetite ores mainly have induced magnetization,while strongly magnetic volcanic rocks are dominated by remanent magnetization.A method that could allow the remote determination of in-situ magnetic properties of sources by using natural geomagnetic variations has been recommended in this paper.Comments are also made on several methods related to interpreting magnetic anomalies caused by remanent magnetization.

关 键 词：岩石与矿石的磁性 区分感磁和剩磁 Zietz-Andreasen方法 赫耳比希矩法 Lelièvre-Oldenburg方法 

分 类 号：P631[天文地球—地质矿产勘探]