青海必鲁特那仁地区遥感地质特征及找矿预测

Remote Sensing Geological Characteristics and Prospecting Prediction in the Bilu Te Naren Area,Qinghai

青海必鲁特那仁地区平均海拔高度4 400 m以上,具有较好的遥感地质找矿前提。运用具宽幅红外中分辨率ETM+多光谱数据为遥感数据源,对遥感数据进行预处理,获取了基础遥感影像图,从中解译地层岩性、侵入岩体和线、环性构造,建立解译标志。结合区内成矿地质背景,根据遥感异常特征,进行了遥感找矿预测研究,圈定出10处遥感异常区,并从其中优选出2处遥感异常区作为优先验证的找矿靶区,可为本区地质找矿工作提供有益参考。

The average altitude of the Bhutan Naren area in Qinghai is above 4 400 m,which has a good prospect of remote sensing geological prospecting. In this paper,the wide-range infrared medium resolution ETM + multispectral data is used as the remote sensing data source to preprocess the remote sensing data. The basic remote sensing image map is obtained,from which the formation lithology. Intrusive rock mass and line and ring structure are reconstructed. Based on the ore-forming geological background in the area,the remote sensing prospecting research was carried outon the characteristics of remote sensing anomaly. The remote sensing prospecting research was carried out,and 10 remote sensing anomalies were identified. Two remote sensing anomalies were selected as the priority verification prospecting targets. This area provides a useful reference for geological prospecting work.