Records of the Geological Survey of India, Volume 123, Part 2
Vols. 1- include Report of the Geological Survey, 1867- ; v. 32- include Review of the mineral production of India, 1898/1903- ; v. 75 consists of Professional papers, no. 1-16; v. 76 consists of Bulletins of economic minerals.
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Commentary by Dr D K Ray Senior Deputy Director General 11
BHUTAN UNIT 8396
ANTARCTICA DIVISION 97101
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activity analysis anomalies associated bands Barakar Formation base basin belt Bengal block boreholes Calcutta carried Central chemical clay coal seams Coal Wing COALFIELD Code collected complex continued copper cores correlation covered deposits depth detailed developed DISTRICT Division drilling earlier east eastern evaluation exploration extension fault field geological GEOLOGICAL MAP geophysical gneisses Gondwana grade grained granite ground Group heavy horizon identified INDEX India indicated intersected length lignite limestone located Lower magnetic major million mineral mineralisation Nagpur nature occur pattern PRADESH present processing progress quartz quartzite range Raniganj ratio recorded regional reported represented reserve revealed rocks samples sand sandstone scale schist sector sediments sequence shale sq km strike structure suggests surface surveys taken Talchir thickness tion tonnes trending units upper Valley values various varying Wing zone