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AIRBORNE MINERAL SURVEYS AND EXPLORATION WING 85141
COAL WING 144226
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aeromagnetic anomalies assemblage Barakar Barakar coal seams Barakar Formation Barren Measures base metal basin Bihar block borehole carbonaceous Coalﬁeld coarse comprises core covered Cruise Deccan Traps delineated depth range district drilling Dzongkhag EXPLORATION FOR COAL exposed fault ﬁeld season ﬁne grained ﬁrst ﬁve ﬂoor foraminifera geochemical Geological Map geophysical gneiss gold Gondwana grade granite granulite grey ground evaluation Group horizons identiﬁed indicate intersected investigation Kamthi kimberlite lamproites lignite limestone limestone band lineament located Madhya Pradesh magnetic metamorphic mineral mineralisation multisensor northem NW-SE occur Orissa phyllite programme quartz quartzite Raniganj Regional exploration remote sensing ridge rocks samples sand sandstone scale schist seabed seam zones sector sediments sequence shale shallow signiﬁcant Singhbhum Sohagpur soil southem sq km strike structural subsurface surface surveys Talchir Tamil Nadu thickness Toposheet trending upto Valley West Bengal