A GIS approach in Mineral Targeting with Narayanpet Kimberlite Spatial Dataset Geophysical Surveys Multidisciplinary studies involving detailed satellite imagery, aerial photo interpretation and ground geophysical surveys were initiated in the NKF to locate new kimberlite occurrences. Regional gravity and magnetic surveys carried out (Reddy et al., 2001) and interpretation of satellite and aerial photo data distincty brought out the co-axial relations existing between geophysical anomaly linears and major lineaments / faults (Rao, 2001). The computer based dataset for the present work is derived from the analogue maps generated during the actual surveys and field activities in the NKF. Present Work Methodology The present GIS Project involves the following stages :
Two types of datasets i.e., evidence set and over plotting set, are delineated among the captured spatial dataset. The evidence spatial dataset comprising those discrete geographic objects evidencing the causative role in the emplacement process or defining the signatures of probable locales of kimberlite and allied rocks in NKF. And thus they are of predictor nature in prognostication process. The spatial database from the evidence set are :
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