新疆西天山地区岩矿石磁化率特征及应用  

MAGNETIC SUSCEPTIBILITY FEATURES OF ROCK AND ORE IN WEST TIANSHAN AREA OF XINJIANG AND THEIR APPLICATIONS

作　　者：张玄杰[1] 范子梁[1] 郑广如[1] 余学中[1] 

机构地区：[1]中国国土资源航空物探遥感中心,北京100083

出　　处：《物探与化探》2013年第1期67-72,共6页Geophysical and Geochemical Exploration

摘　　要：充分了解岩矿石磁化率是进行航磁推断解释的前提条件。近年来西天山地区野外实测500余处物性点,累计获得有效磁化率数据15 000余个,磁化率数据统计分析结果表明,石炭系大哈拉军山组、伊什基里克组和二叠系乌郎组是区内最主要的磁性地层,部分海西期岩体磁性较强,而磁铁矿具有极高的磁化率值。根据这些磁化率特征,在西天山地区圈定磁性火山地层上百处,新圈定隐伏(半隐伏)岩体221处,推断铁矿磁异常109处,新发现铁矿(矿点)十余处。Magnetic susceptibility data play an important role in the process of interpreting aeromagnetic anomaly.In order to better application of the high precision aeromagnetic data obtained in West Tianshan Mountains,the authors measured magnetic susceptibility at more than 500 points,and made a systematic arrangement and statistic analysis of these data.The magnetic susceptibility features of rock and ore were studied in the light of strata,lithology and ore.Based on the magnetic susceptibility data,the authors delineated hundreds of magnetic strata and identified 221 concealed or semi-concealed intrusive bodies.The authors inferred 109 magnetic anomalier of iron deposit and found more than ten iron bodies in West Tianshan Mountains.

关 键 词：西天山 高精度航磁 磁化率 铁矿 

分 类 号：P631.2[天文地球—地质矿产勘探]