Records of the Geological Survey of India, Volume 128, 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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ANTARCTICA DIVISION 5159
BHUTAN UNIT 6089
AIRBORNE MINERAL SURVEYS AND EXPLORATION WING 90152
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analysis anomalies associated bands Barren Measures base basic basin belt Bhutan block boreholes carried central clay coal seams COALFIELD coarse coast Code collected completed comprises contain continued core course covered cruise depth detailed developed DISTRICT Division drilling east eastern evaluation Extended fault field season followed Formation further GEOLOGICAL MAP geophysical gneiss gold Gondwana grade grained granite gravity grey ground Group identified included India indicated intersected length lignite limestone located lower magnetic major medium mineralisation minerals northern observed occur phyllite potential PRADESH presence processing progress Project quartz quartzite ranging Raniganj recorded REGIONAL EXPLORATION reports represented revealed ridge rocks samples sand sandstone scale schist sector sediments sequence shale slope southern sq km strike structural studies surface surveys taken thickness trending units upto Valley values varies various Wing zone