Records of the Geological Survey of India, Volume 115, Parts 3-4
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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alkaline analysed Arunachal Assam assemblage associated bank Barail basin bedded belt biotite Brahmaputra Brahmaputra river carbonatite chlorite Coal continuity course deposits Details Disang dissected district drainage dyke east Eastern Evans fault flow folding foliation Formation fraction fractured garnet Geol GEOLOGICAL SURVEY given gneiss Golagar Nala grains Group hills Himalaya identified inclusions Kohima Kopili lamprophyres landforms length magnetite major Manipur Meghalaya Mineral mineralisation mineralised zone minor muscovite Nagaland Naogaon nature observed occur pattern phases phonolite places plains Plate plateau point bar Potin present pyrite quartz Ranga range reaction recorded region Report reservoirs result ridge river rocks samples sandstone schist separate shale slopes southern spring stage staurolite streams structural studies suggest sulphide surface Surma Surv SURVEY OF INDIA synclinorium Table tinguaite trending tributaries units Upper upto valley zone