Evaluation of remote sensing techniques for geological studies in eastern part of doon valley

A comparative study of different remote sensing techniques has been made for geological studies in the Eastern part of Doon Valley. Aerial photographs, standard Landsat T.M. FCC and Computer Campatible Tape were used to delineate lithologic units and gological structures. In all, seven lithountis could be delineated and several geological structures, e.g. folds, faults, joints etc were easily marked. The rock types are mainly quartette, phyllite, conglomerate, sandstone, shale and alluvium. Aerial photo-interpertation has proved best for large scale mapping. Landsat TM FCC has proved superior for small scale mapping. Digital analysis of Landsat TM data has increased the interpretability of geological features.