东准噶尔三道岭地区遥感矿化蚀变信息提取及综合信息找矿

摘要

遥感矿化蚀变信息提取已被广泛应用于地质找矿中，但直击找矿部位需其他信息佐证。综合运用地质、化探、遥感等方法进行找矿可增大发现新矿产的可能。在新疆东准噶尔巴里坤县三道岭地区以遥感为先导，对ETM数据采用掩膜技术剔除水体、第四系等干扰，再利用Crosta法提取矿化蚀变信息，将遥感异常与地质、化探信息叠合进行分析，据此圈定25处找矿靶区。对其中10处靶区进行野外地质检查，验证地表多处蚀变，发现铜、金矿化点8处。%AlAlteration mineral mapping has been extensively used in ore prospecting.However,it’s not adequate to lo-cate the ore exploration targets directly.Employing multi-information including geology,geochemical exploration and re-mote sensing in mineral resources prospecting will largely reduce a lopsided view resulted from a single method.This study takes Sandaoling in Balikun County,Eastern Junggar,Xinjiang as the study area for synthetic ore prospecting.Firstly, masking technique was used to eliminate the influence of the water,soil and vegetation. Crosta technique was taken to the preprocessed images to identify the altered minerals.The results obtained from the remote sensing techniques were com-bined with the geochemical anomalies and geological data. Twenty-five ore exploration targets were located.Through ground inspection of 10 targets,the existences of several altered outcrops were confirmed and 8 new mineralization occur-rences are discovered.