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Photogeology and Remote Sensing Division
Central Petrological Laboratories
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analysis anomalies associated bands Barakar Barren base basic basin belt block boreholes carried Central clay coal seams Coalfield coarse Code collected complex contains continued cores course covered cruise deposition depth detailed DISTRICT Division drilling east eastern evaluation exploration exposed extension faults field field season flight followed Formation GEOLOGICAL MAP geophysical gneiss gold grade grained granite grey ground Group horizons India indicated interpreted intersected lignite limestone located Lower magnetic mainly major Measure medium mineralisation minerals northern occur Orissa pattern period phyllite Pradesh presence programme progress quartz quartzite range Raniganj recorded regional REGIONAL EXPLORATION represented reveals rocks samples sand sandstone scale schist sector sediments sequence shale shallow shows southern strike structural studies surface survey taken thickness tion trending types unit upto Valley values varies Wing zone