摘要
对老岭成矿带航磁数据进行了系统研究,认为老岭成矿带磁场以4个正磁场和2个负磁场为主,复杂场不发育.通过对线性构造的解译,全区划分出北东、北北东、北东东(近东西)、北西四组线性构造.由北部北倾构造带将全区划分为南北两个构造单元,北部单元为一个印支期就位的推覆构造,南部单元为老岭变质核杂岩.构造演化顺序依次为北东-北北东-北东东-北西.
Aeromagnetic data of Laoling mineralization belt has been studied. There are four normal magnetic field and two negative magnetic field, there isn't mixed magnetic field in researched area. The linear structures that have been reciphered can be divided into four groups. Their strike are NE, NNE, NEE, NW respectively. There is a structural belt inclined to the north over the north part of the area. It divided research area into north and south unit. The north structural unit is a nappe structure it took his place before Indo\|Chinese epoch. The south structural unit is Laoling metamorphic core complexes. The structural evolution sequence are NE,NNE,NEE,NW.
出处
《地球物理学进展》
CSCD
2004年第2期449-454,共6页
Progress in Geophysics
基金
国家科技攻关(75 55 03 03)
国土资源部科技攻关(85-01-002-03)
中国地质调查局地质大调查项目(dd00003)联合资助.
关键词
老岭成矿带
航磁
线性构造
构造单元
Laoling mineralization belt, aeromagnetics, linear structures, structure unit.
