西昆仑麻扎构造混杂岩带中大理岩的遥感识别方法  

Remote Sensing Identification of Marble in Mazha Tectonic Mélange of West Kunlun Orogen

作　　者：陈海云 齐睿 张志 CHEN Haiyun;QI Rui;ZHANG Zhi(Northwest Engineering Corporation Limited,Xi'an,Shaanxi 710065,China;Troops 32023 PLA,Dalian,Liaoning 116000,China;Institute of Geophysics&Geomatics,China University of Geosciences,Wuhan,Hubei 430074,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,陕西西安710065 [2]32023部队,辽宁大连116000 [3]中国地质大学(武汉)地球物理与空间信息学院,湖北武汉430074

出　　处：《现代地质》2022年第1期259-265,共7页Geoscience

基　　金：青海省青藏高原北部地质过程与矿产资源重点实验室专项基金项目(2019-KZ-01);青海省科技厅创新平台建设专项项目(2019-ZJ-T04);中国地质调查局项目“西昆仑成矿带矿产资源遥感地质调查”(1212011120889)。

摘　　要：为研究如何利用遥感技术对构造混杂岩带进行识别,以西昆仑地区麻扎构造混杂岩带为例,对混杂岩带中的大理岩进行光谱测试以及光谱特征分析,利用实测波谱对研究区ETM^(+)影像进行反演的波谱反演法,建立实测波谱和影像波谱之间的线性关系;辅之增强变换处理方法提取色调信息,扩大不同岩性的灰度差异,突出目标信息并改善图像效果,以提高实测波谱的利用率以及岩性信息提取的精确度。实验研究表明,利用该种方法识别构造混杂岩带中的大理岩是可行的,且遥感识别结果与地面地质调查结果基本吻合,具有较好的地质效果。In order to study the usage of remote sensing technology to identify tectonic mélanges,we took the Mazha tectonic mélange in the West Kunlun Orogen as an example.The marble in the mélange was analyzed for their spectral characteristics.The ETM^(+)image spectral inversion method was used to establish the linear relations between the measured spectrum and image spectrum.Assisted with enhanced transformation processing,the gray-scale distinction of different lithologies was expanded,the target information was highlighted and the image effect improved.Our work has also enhanced the utilization of measured spectrum and the accuracy of lithological information extraction.This method can be used to recognize the marble in Mazha tectonic mélange of the West Kunlun Orogen.

关 键 词：麻扎构造混杂岩带 遥感 波谱反演 ETM+影像 

分 类 号：P588.3[天文地球—岩石学]