内蒙古阿巴嘎旗白音图嘎地区航磁在断裂构造解译中的应用  

Application of Aeromagnetic Data in Interpretating Fault Structure of Baiyintuga Area, Abga Banner, Inner Mongolia

作　　者：刘博[1] 陈天红[1] 冯欣[1] 续远超 任柄璋 陈广宇[1] 宋丙剑 

机构地区：[1]武警黄金第四支队,辽宁辽阳111000 [2]武警警种学院,北京102202

出　　处：《城市地质》2015年第2期83-86,共4页Urban Geology

摘　　要：内蒙古阿巴嘎旗白音图嘎地区为浅覆盖区,地表构造形迹难以识别。笔者以最新的高精度航磁资料为依据,论述了区内深大断裂的磁场特征,并对航磁在断裂构造解疑中的应用进行了探讨。根据区内构造磁异常特征,在航磁△T化极垂向一次导数基础上,全区共解译断裂构造15条。构造方向主要为北东、北西方向,其中F1、F2、F3、F4、F7、F8、F9位于白音图嘎幅,岩性主要为宝力高庙组,为基岩出露区,脉岩比较发育,为花岗斑岩脉、正长斑岩脉,地表出露岩脉主要呈北西向,与航磁解译构造较为吻合,经向上延拓后构造不明显,显示底部为同一岩性基底;F5、F14、F15经向上延拓构造变得更加清晰,推断该构造由深部大的构造引起。Baiyintuga area, the Abga Banner, Inner Mongolia is a shallow covering area of geological structures, where the surface structural features are indiscernible. This paper provides a detailed description of the magnetic field characteristics of deep faults in this area and discussion on the application of the aeromagnetic in faulted structure interpretation based on the latest high-precision aeromagnetic data. According to the structure characteristics of magnetic anomaly mentioned above, 15 faulted structures are distinguished in this area based on first derivative of aeromagnetic △T vertical directions. The main structures extend as north-east and north-west directions. As for the faults such as F1. F2, F3, F4. F7. F8, F9, located in Baiyintuga area, the lithology in the faulted area mainly belongs to Baoligaomiao Fm. They are rock outcropped areas with well-developed vein rock, among which are principally granite porphyry veins and syenite porphyry veins. The surface exposed dikes are mainly in the north-west direction, which are similar to the aeromagnetic interpretation structure. While the structures are upward extending, they become indistinct, which indicates they have the same base-rock at the bottom. But as for the faults ofF5, F14, F15 have much clearer upward continuation, so these faults may be caused by the large fracture in the deep.

关 键 词：阿巴嘎旗 白音图噶 航磁 断裂构造 

分 类 号：P631.222[天文地球—地质矿产勘探]