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AIRBORNE MINERAL SURVEYS AND EXPLORATION WING 113 190
Overview of the Deputy Director General
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activity analysed anomalies associated bands Barakar Barakar Formation base basement basin belt Bihar block boreholes carried central clay coal seams Coalfield coarse Code collected complex comprises contains continued copper cores covered deposits depth detailed DISTRICT Division drilling east eastern evaluation exploration exposed extension fault field field season followed Formation further GEOLOGICAL MAP geophysical gneiss Gondwana grade grained granite grey ground Group heavy horizon India indicated intersected lignite limestone located lower magnetic mainly major medium mineral mineralisation nature occur potentiality PRADESH present progress quartz quartzite range Raniganj recorded regional Regional exploration reported represented reserve revealed ridge river rocks samples sand sandstone scale schist seabed sector sediments sequence shale shelf slope southern strike structural studies surface surveys taken thickness trending types units upper upto Valley values varies Wing zone