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遥感技术与应用  2020, Vol. 35 Issue (5): 1146-1157    DOI: 10.11873/j.issn.1004-0323.2020.5.1146
遥感应用     
甘肃北山白峡尼山地区多源遥感岩性制图研究
尹春涛1(),谢文扬1,王奇2,刘磊1(),孟刚刚1
1.长安大学地球科学与资源学院,西部矿产资源与地质工程教育部重点实验室,陕西 西安 710054
2.中国资源卫星应用中心,北京 100094
Study on Multi-Source Remote Sensing Lithologic Mapping in Baixiani Mountain Area of Beishan, Gansu Province
Chuntao Yin1(),Wenyang Xie1,Qi Wang2,Lei Liu1(),Ganggang Meng1
1.Key Laboratory of Western China’s Mineral Resources and Geological Engineering,Ministry of Education,School of Earth Sciences and Resources,Chang’an University,Xi’an 710054,China
2.China Centre For Resources Satellite Data and Application,Beijing 100094,China
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摘要:

甘肃北山地区地质构造复杂,岩浆活动强烈,该区工作程度较低,已有1:20万、1:5万地质图对区内岩性(如中酸性侵入岩)圈定较为笼统,且界线不够准确。以甘肃北山白峡尼山地区为研究区,利用彩色空间变换(IHS)、Brovey等方法对ETM多光谱图像与资源三号(ZY3)全色波段高分辨率图像进行空间分辨率融合,获得兼具ETM光谱分辨率与资源三号空间分辨率之长的高分辨率图像。再对原始影像进行比值、主成分分析及假彩色合成等增强处理,突出其岩性差异,将各种方法处理的影像与数字高程模型(DEM)数据结合构建三维影像,进行综合解译。对解译结果进行野外验证、样品薄片鉴定及反射光谱特征分析,据此对结果进行修正,获得了研究区遥感解译地质图。结果表明:对于西部基岩露头较好地区,利用多源遥感数据融合可更新现有地质图,为后续填图、找矿工作提供参考。

关键词: 多光谱岩性解译光谱分析多源数据    
Abstract:

The geological structure of Beishan area in Gansu Province is complex, and the magmatic activity is intense. Due to the low level of work in this area, the 1∶200 000 and 1∶50 000 geological maps have been used to delineate the lithology (such as medium-acid intrusive rocks) of the Beishan, Gansu, but the boundaries are not accurate enough. Taking Baixiani Mountain in Beishan as the research area, the ETM multi-spectral image and the ZY3 panchromatic high spatial resolution image were fused by color spatial transformation (IHS), Brovey and other methods to obtain the high-resolution image with both ETM spectral resolution and ZY3 spatial resolution. Then the raw image was enhanced by ratio, principal component analysis and false color synthesis to highlight the lithological differences. The images processed by various methods were combined with Digital Elevation Model(DEM) data to construct 3D images for comprehensive interpretation. Based on the field verification of the interpretation results, sample thin section identification and reflection spectrum characteristic analysis, the results are modified to obtain the geological map of remote sensing interpretation in the study area. The results show that the existing geological maps can be updated by using multi-source remote sensing data fusion in western areas with good outcrop of bedrock, which can provide reference for subsequent mapping and ore-prospecting.

Key words: Multispectral    Lithologic interpretation    Spectrum analysis    Multi-source data
收稿日期: 2019-08-22 出版日期: 2020-11-26
ZTFLH:  TP79  
基金资助: 陕西省自然科学基金项目(2018KJXX?062);中央高校基本科研业务费专项资金(300102278303)
通讯作者: 刘磊     E-mail: 2019127067@chd.edu.cn;liul@chd.edu.cn
作者简介: 尹春涛(1998-),女,河北邢台人,硕士研究生,主要从事遥感地质应用研究。E?mail:2019127067@chd.edu.cn
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引用本文:

尹春涛,谢文扬,王奇,刘磊,孟刚刚. 甘肃北山白峡尼山地区多源遥感岩性制图研究[J]. 遥感技术与应用, 2020, 35(5): 1146-1157.

Chuntao Yin,Wenyang Xie,Qi Wang,Lei Liu,Ganggang Meng. Study on Multi-Source Remote Sensing Lithologic Mapping in Baixiani Mountain Area of Beishan, Gansu Province. Remote Sensing Technology and Application, 2020, 35(5): 1146-1157.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2020.5.1146        http://www.rsta.ac.cn/CN/Y2020/V35/I5/1146

图1  研究区1∶5万地质简图1.第四系全新统洪积砂砾石及砂土;2.第四系上更新统洪积砂砾石及砂土层;3.泥盆系上统墩墩山群灰绿色斜长流纹岩、英安岩、安山岩;4.前长城系明舒井群上亚群三岩组条痕状混合岩、片岩、片麻岩、石英岩;5.印支期第二次砖红、深肉红色钾长花岗斑岩、二长花网岗斑岩;6.印支期第一次肉红色钾长花岗岩;7.印支期第一次肉红色二长花岗岩;8.华力西期中期第三次灰白、黄白色花岗闪长岩、二长花岗岩;9.华力西期中期第二次黄白色二长花岗岩;10.华力西期中期第一次黄白、肉红色巨斑似斑状钾长花岗岩、二长花岗岩;11.华力西期早期第三次灰白色片麻状石英闪长岩、石英二长闪长岩;12.华力西期早期第二次灰白、深灰色闪长岩;13.华力西期早期第一次灰黑、灰绿色角闪辉长岩;14.石英脉;15.花岗斑岩脉;16.花岗岩脉;17. 辉绿玢岩脉;18.断层;19.地质界线
图2  研究区典型岩性样品光谱曲线
图3  主成分分析方法融合后的741影像
图4  比值假彩色合成图像
主成分\波段Band1Band2Band3Band4
PC10.383587240.5120881980.5772504480.50735434
PC2-0.694536623-0.371335210.3381865310.515129995
PC30.384655525-0.311570932-0.5617879360.662840853
PC4-0.4717200810.709083488-0.4866272760.194614145
表1  ZY3波段1、2、3、4主成分分析特征向量矩阵
图5  资源三号4个波段主成分分析PC1、PC2、PC3假彩色合成图像
图6  由DEM数据构建的研究区三维影像
图7  地层单元主成分法融合741影像特征
图8  研究区各岩体影像特征
图9  研究区各岩脉影像特征
图10  中酸性岩脉实地验证图
图11  BS-0815-D3、D4、D5点光谱曲线对比图
图12  小型侵入体实地验证图
图13  最终遥感解译地质图1.第四系全新统洪积砂砾石及砂土;2.第四系上更新统洪积砂砾石及砂土层;3.泥盆系上统墩墩山群灰绿色斜长流纹岩、英安岩、安山岩;4.前长城系明舒井群上亚群三岩组条痕状混合岩、片岩、片麻岩、石英岩;5.印支期第二次砖红、深肉红色钾长花岗斑岩、二长花岗斑岩;6.印支期第一次肉红色钾长花岗岩;7.印支期第一次肉红色二长花岗岩;8.华力西期中期第三次灰白、黄白色花岗闪长岩、二长花岗岩;9.华力西期中期第二次黄白色二长花岗岩;10.华力西期中期第一次黄白、肉红色巨斑似斑状钾长花岗岩、二长花岗岩;11.华力西期早期第三次灰白色片麻状石英闪长岩、石英二长闪长岩;12.华力西期早期第二次灰白、深灰色闪长岩;13.华力西期早期第一次灰黑、灰绿色角闪辉长岩;14.石英脉;15.花岗斑岩脉;16.花岗岩脉;17. 闪长岩脉;18.辉绿玢岩脉;19.花岗岩体;20.闪长岩体;21.辉绿玢岩体;22.断层;23.地质界线
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