A Geographical Information System Based Integrated Study Of Remote Sensing And Gravity Data For Geological Appraisal Of Parts Of Singhbhum-Orissa Craton, India.In The Present Study, An Attempt Has Been Made For Geological Assessment Of A Hard Rock Terrain Through A Geographical Information System Based Integrated Study Of Remote Sensing And Gravity Data. Five Satellite Digital Data, Viz., Ers-1 Sar, Ers-2 Sar, Irs-1c Liss Iii, Modis And Landsat-Etm+, Together With Published Bouguer Gravity Data Have Been Used. The Area Selected For This Study Is A Part Of Singhbhum Orissa-Craton, India: Which Lies Between Latitudes 200 50' N To 230 24' N And Longitudes 840 56' E And 870 5' E And Covers An Area Of About 6000 Sq. Km. The Study Area Lies Over Parts Of Three Adjacent States Of India, Namely, Jharkhand State, Orissa State And West Bengal States And Is Covered Partially By Survey Of India Toposheets, Nos.73e, 73f, 73g, 73i, 73j, And 73k. The Hard Rock Terrain Comprises Of Granites, Gneisses, Quartzites, Shales And Phyllites. Singhbhum Shear Zone, One Of The Mineralogically Rich Regions Of India, Lies Within The Study Area. Visually Interpreted Ers-1 Sar And Fast Fourier Transformed Enhanced Ers-2 Sar Have Been Used For Demarcation Of Structural Features And The Results Obtained Have Been Compared Through Their Respective Rose Diagrams. Lithological Mapping Has Been Carried Out Through Two Approaches; One From Fusion Of Optical (Irs-1c Liss Iii) And Sar (Ers-2 Sar) Data, And Another From The Extracted Land Surface Temperature And Relative Emissivitiy Imageries Generated Using Modis Thermal Infrared Data. Reference Channel And Emissivity Normalization Methods Have Been Used For Land Surface Temperature And Relative Emissivity Estimations; And Additionally, Alpha Residual Method Has Also Been Used For Relative Emissivity Estimation. Landsat Etm+ Data Has Been Utilized In Mineral Occurrence Mapping Following Advanced Spectral Analysis Technique. Further, Digital Gravity Model Has Been Generated To Infer The Subsurface Tectonics.