Lithologic mapping using LANDSAT ETM + and ASTER data

The performance of lithologic mapping using both ASTER and LANDSAT ETM + data was evaluated in this paper. Lithologic classifications using different spectral regions of ASTER data,different combination of them,and ETM + data were performed respectively,especially using all ASTER and ETM + bands.The results showed that different spectral regions of ASTER data produced different mapping accuracies.ASTER data obtained better performance in lithologic classification than that of using ETM + data.Classification with all ASTER and ETM + bands combined achieved high overall accuracy and Kappa coefficient, compared to those obtained with ASTER data or ETM + data alone,which may indicate that both data provide complementary information for lithologic discrimination.