现代地质2013，Vol.27Issue(1)：116-123,8.
东昆仑造山带巴颜喀拉山群ASTER岩性信息提取
Extraction of Lithological Information from Bayan Har Mountain Group of East Kunlun Orogenic Belt Using ASTER Image
摘要
Abstract
The precise division of Bayan Har Mountain Croup with complex lithology and widely distributed in the East Kunlun is of great significance to the stratigraphic unit division and structure property analysis. After geometric and atmospheric correction for ASTER images of Bayan Har Mountain in the East Kunlun orogenic belt, the images of principal component analysis( PCA) and band ratio( BR) are obtained by the methods of li-thological information extraction, such as the principal component analysis and mineral index. According to the different images and field geological survey, identification and extraction of Bayan Har Mountain Group lithology information are carried out in the study area. The results show thai the upper Bayan Har Mountain Group (T3by) mainly in the south is only divided into two lithology sections because of the unobvious difference of images, which lilhology is mainly gray-dark gray silty slate and sandstone. However, the lower Bayan Har Mountain Group (T1by) in the north is divided into four lithology sections instead of the above two sections in the south, i. e. dark gray siltstone and phyllite(section a) , gray-green fine sandstone (section b) , yellow-brown fine sandstone ( section c) and dark gray fine-grained sandstone slates( section d) , and the tones and textures of the images are different. The study shows the advantages of extraction of lithological information by using RS in the plateau, and provides a reference for stratigraphic unit division and comparison for Bayan Har Mountain Group.关键词
东昆仑造山带/巴颜喀拉山群/ASTER/岩性信息Key words
East Kunlun orogenic belt/ Bayan Har Mountain Group/ ASTER/ lithological information分类
天文与地球科学引用本文复制引用
宋晚郊,张绪教,高万里,胡道功..东昆仑造山带巴颜喀拉山群ASTER岩性信息提取[J].现代地质,2013,27(1):116-123,8.基金项目
中国地质调查局矿产资源评价专项项目(1212011120215) （1212011120215）
中国地质调查局项目(1212010711510). （1212010711510）
