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ANTARCTICA DIVISION 5359
BHUTAN UNIT 6079
MARINE WING 126160
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aeromagnetic AMSE Wing analysis ANDHRA PRADESH anomaly bands Barakar Barakar Formation basin bathymetric Bengal BHUTAN Bihar block boreholes charnockite chemical coal seam zones COAL WING Coalfield coarse coast Code core samples course covered cruise depth range DISTRICT Division drilling east eastern EXPLORATION FOR COAL ﬁeld season GEOLOGICAL MAP geophysical geotechnical gneiss gold Gondwana grains granite granitoids grey ground evaluation Gujarat heavy mineral Hyderabad indicated innershelf intersected investigation isobath Kakinada Kamthi Kerala lignite limestone line km located magnetic Marine Wing microtextures mineralisation nearshore occur ofﬁcers olivine Orissa phyllite placer plagioclase port PRADESH proﬁle programme quartz Rajasthan Raniganj REGIONAL EXPLORATION ridge rocks Samudra Samudra Manthan scale schist Seabed surveys seaﬂoor seam zones sector sediments shale shelf signiﬁcant silty clay slope Sohagpur southern sq km studies subsurface surface Survey of India thickness tion toposheet trending upto Valley varies volcanics