武当地区韧性剪切带遥感解译  

Remote Sensing Interpretation of Ductile Shear Zone in Wudang Area

作　　者：余凤鸣[1,2] 何龙清[3] 王磊 

机构地区：[1]中国地质大学(武汉)地球科学学院,武汉430074 [2]武汉地质调查中心,武汉430205 [3]江西省地质矿产勘查开发局,南昌330002

出　　处：《国土资源遥感》2012年第4期124-131,共8页Remote Sensing for Land & Resources

摘　　要：利用遥感技术提取韧性变形构造信息的研究一直在进行之中。武当地区构造变形历史复杂,韧性剪切变形具有一定的代表性。通过对武当地区推覆、滑覆型韧性剪切带的ETM图像遥感解译,认为尽管韧性剪切带在遥感图像上没有明显的异常界面,但因地质体的不同组成使韧性剪切带两侧影像的色调有明显差异;经小波分析和面理提取后,面理、线理集合体的影像特征和方位变化对韧性剪切带的识别有较好的效果。利用上述方法对郧西—郧县滑覆型剪切带、房县—竹山推覆型剪切带等6个典型实例进行了解译分析,经野外验证,与实地调查结果较为吻合,证实了这一方法的可行性,为推覆、滑覆型韧性剪切带的遥感解译提供了有益的借鉴。Research on using remote sensing technology to extract the ductile structure information was conducted in this paper.The tectonic deformation history in Wudang area is complex,represented by ductile shear deformations.The thrust and gliding nappe ductile shear zones in Wudang area were analyzed by using ETM remote sensing image,and the results show that,although there is no significant abnormal interface of the shear zones in the remote sensing image,the tones of the image on each side of the ductile shear zone are obviously different because of the different geological components.Thus good identification results of the image characteristics and the direction changes of the foliation lineation combination can also be obtained by the wavelet analysis and the extraction of the foliations.Using the methods mentioned above,the authors interpreted and analyzed six typical examples including the Yunxi-Yunxian gliding nappe shear zone and the Fangxian-Zhushan thrust nappe shear zone,and the result is consistent with the practical investigation,thus providing a useful reference for the remote sensing interpretation of the ductile shear zone.

关 键 词：遥感解译 小波分析 武当地区 韧性剪切带 

分 类 号：TP753[自动化与计算机技术—检测技术与自动化装置]