遥感在大兴安岭牛汾台林场地区1:5万区调中的应用研究

5万牛汾台林场等4幅区调项目分别采用资源三号卫星影像和LandSat-8多光谱数据进行遥感解译. 经对比分析, 资源三号卫星影像适合应用于地形地貌方面的解译, 而LandSat-8多光谱数据则在线型构造、环状构造解译中起到了更大作用. 解译出29条NE、NW向为主的线型构造, 29个与火山喷发活动相关的小型环形构造. 经野外实地验证, 其中11条线型构造发现断裂, 11个环形影像填绘出火山机构. 解译了第四系、新近系五叉沟组、古生界、上侏罗统—下白垩统和岩体的界线. 经验证, 五叉沟组以及第四系解译界线与野外调查界线大致吻合; 解译的古生界地层界线与验证的早古生代海勒斯台构造混杂岩界线大致相同; 岩体经验证为早白垩世正长花岗岩.

APPLICATION OF REMOTE SENSING IN 1:50 000 REGIONAL GEOLOGICAL SURVEY OF NIUFENTAI FOREST FARM IN DAXINGANLING MOUNTAINS

The ZY-3 satellite images and LandSat-8 multispectral data are applied respectively in the remote sensing interpretation of 4 sheets of 1: 50 000 regional survey projects including Niufentai Forest Farm in Inner Mongolia. Through comparative analysis of the above two sources of data, it is found that the former is suitable for interpretation of terrain and landform, while the latter plays a greater role in interpretation of linear and ring structures, with which 29 NE- and NW-oriented linear structures and 29 minor ring structures related to volcanic eruption are interpreted, as well as the boundaries of Quaternary, Neogene Wuchagou Formation, Paleozoic, Upper Jurassic-Lower Cretaceous strata and rock mass. Faults are found in 11 linear structures, and volcanic edifices are delineated in 11 ring images through field verification. It is proved that the interpreted boundaries of Wuchagou Formation and Quaternary are roughly consistent with the boundaries by field survey. The interpreted Paleozoic boundaries almost coincide with the verified boundary of Early Paleozoic Hellestein tectonic melange. The rock mass is confirmed to be Early Cretaceous syenogranite.