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OFFSHORE MINERAL EXPLORATION AND MARINE GEOLOGY WING
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analysis anomalies associated bands basalt basic basin block bodies boreholes carried chemical clay coal collected completed comprises construction continued core covered deposits depth detailed direction Director district DIVISION drilling dykes east encountered ENGINEERING exploration exposed fault field flows folds Formation foundation geological geological mapping Geologist geophysical gneiss grade granite grey Group Headquarters hill holes India indicated Laboratory length lignite limestone located logging Lower magnetic major measures mineral mineralisation Nagpur observed occur officers phyllite places Pradesh present Project proposed quartz quartzite range recorded regional reports river rocks S/Shri samples sand sandstone scale Scheme schist seams sediments shale shear Shri soil sq km stage strike structure studies suggested surface surveys thickness tion Toposheet traverse trending tunnel types units Upper upto values various varying veins West zone