Remote Sensing Methods Research To Identify Different Granitoids

The study of granitoids is always one of the most important, and the most complex basic geological problem in geology. Granite lithologic survey is the basis for all granite research. Use remote sensing methods to identify different granitoids have important practical significance. The advantage of remote sensing technology will be played. Geological information includes within remote sensing data will be fully mined. Important reference information to related regional geological survey and mineral resources exploration will be provided, especially in high altitude, traffic inconvenience area.This study try to use the new remote sensing data, which with high spatial resolution and more band, to explore a remote sensing method to identify different granitoid. The study areas were in the important metallogenic belt of western China. The remote sensing image processing and visual interpretation technology will be used, field geological survey will be combined with. The method will suitable for the situation of remote sensing technology development in China, and be able to service for the regional geological survey.This study based on the spectral characteristics of target lithology. The typical spectral curves and basic characteristics of 4 kinds of granites, and 15 kinds of rock units were summarized. The satellite remote sensing spectral characteristics of their were studied, and suggestions on remote sensing data processing were gotten. Then, research on remote sensing data processing, which was targeted, been done. Collaborative application between medium resolution remote sensing data and high resolution remote sensing data were studied. And the remote sensing method to identify different granitoid was gotten.The remote sensing method to identify different granitoid, which come from this study, could be summarized as: ① Geological information in the study area should be collected and studied, the target lithology should be summarized. ② The typical spectral curves and basic characteristics of the target lithology should be studied. The satellite remote sensing spectral characteristics of the target lithology should be studied, and suggestions on remote sensing data processing should be gotten. ③ Remote sensing data should be acquisition. Then, multi scheme of remote sensing data processing, which according to the target lithology, should be done. ④ High spatial resolution and middle spatial resolution remote sensing data should be used together, and a series of remote sensing images should be produced.⑤ Use these remote sensing images, comparison interpretation and lithologic identify should be studied. The laboratory research results could be gotten. ⑥ Based on the laboratory research results, field investigation, samples collection, necessary of rock and mineral identification should be done, also. ⑦ All the results, include the laboratory research, the field investigation, the rock and mineral identification, should be used together for the result of remote sensing methods to identify different granitoids.