热红外多光谱遥感技术金矿调查应用研究

THE STUDY FOR GOLD MINERALIZATION BY THERMAL INFRARED MULTISPECTRAL SCANNER (TIMS)

根据航空遥感实验获取的TIMS图象,利用计算机图象处理主成分分析和去相关等方法,并依据TIMS成象机制,提取出花岗岩、斜长片麻岩以及粘土化、硅化等蚀变岩岩性和丰富的断层信息,结合金矿化带光谱特征,圈出金矿化异常区,同时TIMS图象也显示了该地区北北东向金矿成矿主断层控制金矿化的规律,现有分析成果表明热红外多光谱扫描仪所获得的图象数据在岩性和金矿化带的识别上,以及增强断层信息方面有较好效果.

TIMS data were acquired on November 1990 in Jinchangyu region. By meansof computer image processing such as principal components transformation and decorrela-tive transformation, etc., some important geological information such as gold mineralizedzone, granitic, plagioclase gneiss, clay grouting, silicification and fault system is taken out,and two gold mineralized zones in the research area found. The results show that the goldmineralization in this region is controlled by the NNE fault system. It is proved that theThermal Infrared Multispectral Scanner (TIMS) data are very efficient in discrimination ofrocks, gold mineralized zones and enhancement of fault information. TIMS remote sensingtechnique has great potential in geological applications.