新疆塔什库尔干地区康西瓦断裂带遥感地质特征及空间展布研究

发布时间：2018-03-31 01:38

本文选题：遥感　切入点：Worldview-2　出处：《吉林大学》2017年硕士论文

【摘要】：塔什库尔干地区处在西昆仑构造带的一个重要的构造转折部位,控制着西昆仑大地构造单元的多条断裂带汇聚于此,并偏转方向,其中康西瓦断裂带是其中最重要的一条构造边界断裂。该断裂带在康西瓦地区研究程度较高,但在塔什库尔干地区的研究程度较低,其展布位置、构造特征和属性尚不清楚。本文利用遥感技术为主要手段,以Aster和WorldView-2高分辨率卫星数据为基础数据源,辅以区域地质、区域地球物理和野外地质工作,通过多元数据相结合的分析方法,对新疆塔什库尔干与塔吉克斯坦南部地区大地构造格架进行了解译划分,通过新型数据地质应用技术方法,对塔什库尔干地区康西瓦断裂带的展布情况,主要取得了以下三方面新的认识:1)通过遥感空间影像建立了塔什库尔干及塔吉克斯坦南部地区的构造格架,确定了康西瓦断裂带在塔什库尔干地区延伸问题,得出康西瓦断裂带由东向西经过麦尔洋、瓦恰后,由辛迪沿塔什库尔干河向东于提孜那甫附近被塔什库尔干断裂错断,再由慕士塔格峰北西进入塔吉克斯坦。2)通过野外实地验证与样品岩石化学分析,进一步证明了康西瓦断裂带是具有右行韧性剪切性质的古特提斯洋向北俯冲消减的界线。3)掩膜-低频扩展的处理方法可以有效提高连续阴坡阴影区遥感影像的质量。提出了变质区遥感地质解释的五条标志,对利用高分辨率遥感资料开展变质地质解释具有重要参考价值。
[Abstract]:The Tashkurgan area is located in an important structural turning point of the West Kunlun tectonic belt, where many fault zones controlling the tectonic units in West Kunlun converge and deflect.The Kangxiwa fault zone is one of the most important tectonic boundary faults.The fault zone has a high degree of study in Kangxiwa area, but a low degree of study in Tashkurgan area. The location, tectonic characteristics and attributes of the fault zone are not clear.In this paper, using remote sensing technology as the main means, using Aster and WorldView-2 high-resolution satellite data as the basic data source, supplemented by regional geology, regional geophysics and field geological work, the analysis method of combining multivariate data is adopted.The tectonic framework of Tashkurgan and southern Tajikistan is interpreted and divided, and the distribution of the Kangsiwa fault zone in Tashkurgan region is analyzed through the new data geological application technique.The following three new understandings have been obtained: 1) the tectonic framework of Tashkurgan and southern Tajikistan has been established through remote sensing spatial images, and the extension of the Kangsiwa fault zone in the Tashkurgan region has been determined.It is concluded that the Kangsiwa fault zone passes through the Mayer Ocean from east to west. After Wacha, the Tashkurgan fault was faulted from Cindy along the Tashkurgan River eastward and near Tizinafu by the Tashkurgan fault.Then entering Tajikistan from the north and west of Mustag Peak.) through field verification and petrochemical analysis of the samples,It is further proved that the processing method of masking and low frequency spread of the Kangxiwa fault zone, which is the boundary of subduction and subduction towards the north of the PaleoTethys ocean with right ductile shear property, can effectively improve the quality of remote sensing images in the shadow area of continuous shady slope.Five indicators of remote sensing geological interpretation in metamorphic areas are presented, which are of great reference value for metamorphic geological interpretation using high-resolution remote sensing data.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P627

【相似文献】