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OFF SHORE MINERAL EXPLORATION AND MARINE GEOLOGY DIVISION
AIRBORNEM INERAL SURVEYs AND Exploration wing
NORTH EASTERN REGION
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amphibolite analysis anomaly zones apatite Asstt bands basin Basu belt Bihar biotite block boreholes Calcutta carried chlorite Coalfield collected contours covered Deccan Trap deformation deposits depth dips Director DISTRICT Division drilling Dubrajpur exposed folds foliation Formation fossils geochemical Geol geological mapping Geological Survey Geologist Geologist Jr geophysical Ghosh gneiss Gondwana grey Group Gupta indicated investigation kyanite laterite limestone lineation located logging Madhya Pradesh magnetic magnetite mapped an area metamorphism metres mica migmatites million tonnes mineral mineralisation nala º º occur pegmatite phyllite Plate plunge Project pyrite quartz quartz veins quartzite Rajasthan Region river rock types S/Shri samples sandstone scale schist schistosity sector sediments sequence shale shear zone Shri Singh Singhbhum ſº sq km sq.km Srivastava strike length structural studies sulphide Survey of India thickness tion toposheet traverses trending upto volcanics