The study area is located in East Azerbaijan Province and is constantly covered by Cenozoic alluvial Era. In this research, ASTER satellite data has been used by Supervised classification method with an emphasis on spectral angle mapper (SAM) and Spectral Information Divergence(SID) for Studying and identifying sedimentary facies in Dechan area. Also Kappa coefficient has been used to evaluate those methods according to ground truth map. The results showed that spectral angle mapper by the highest Kappa coefficient value as the 97/87 percent and 50/90 percent Overall Accuracy, is the most appropriate method for identifying oxide and reducing facies in the Dechan area.