Neoproterozoic rocks are exposed in the southwestern Midyan terrane, which is located in the northwestern Arabian Shield. This terrane contains ophiolitic and metavolcanic rocks and arc-related intrusions. A NW-trending sinistral fault system (Najd Fault System, NFS) affected these Neoproterozoic rocks. The integration of remote sensing techniques, such as band combinations and band ratios of ASTER images, with field observations, helped to discriminate sulfide-rich rocks and to delineate alteration zones, gossans, and quartz veins, which commonly host ore mineralization. The band ratios used were the Al-OH minerals/advanced argillic alteration and the silica and Fe2+ band ratios. ASTER images were used to discriminate different rock units and construct an alteration map of the study area. Additionally, principal component analysis and frequency filtering techniques for ASTER images were used to extract linear faults and shear zone structures. Remote sensing ASTER images helped in the discovery of ancient mines that had not been previously recorded in the study area.

新元古代岩石暴露在位于阿拉伯盾牌西北部的Midyan西南部。该地层包含火山岩和火山岩以及与弧有关的侵入。西北走向的正弦断裂系统（Najd断裂系统，NFS）影响了这些新元古代岩石。将遥感技术（例如ASTER图像的波段组合和波段比）与野外观测相结合，有助于区分富含硫化物的岩石，并勾勒出通常带动矿化作用的蚀变带，戈桑岩和石英脉。所使用的能带比是Al-OH矿物/高级的氩化蚀变以及二氧化硅和Fe2 +的能带比。ASTER图像用于区分不同的岩石单元，并构造研究区域的蚀变图。另外，利用ASTER图像的主成分分析和频率滤波技术提取线性断层和剪切带结构。遥感ASTER图像有助于发现以前未在研究区域记录的古代矿山。