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GEOLOGICAL SURVEY OF INDIA
GENERAL REPORT OF THE GEOLOGICAL SURVEY INDIA FOR THE YEAR
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appears Asstt bands basalt boreholes building Calcutta carried Central Circle clay coal coalfield collected continued covered cracks deposits depth detailed developed dips direction district Division drilling dykes earthquake east eastern Engineer examined exposed extension fault felt field folds formations Geol geological Geological Survey Geologists Ghosh gneiss granite groundwater hill India indicated Island laboratory limestone located Long lower mapped Scale material measures meeting mineral mineralisation nature northern observed occur Office origin pegmatite period places Pradesh present Project proposed quartz quartzite Rajasthan received recommended recorded Regional reported river rock samples sand sandstone Sarvashri Scale schist seams seen shale sheets shocks Shri stage strike structure studies suggested Superintending supply Survey of India thickness thin tion tonnes Trap trend types units upper valley varies veins zone