Records of the Geological Survey of India, Volume 115, Parts 3-4The Survey, 1987 - Earthquakes 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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Page 46
... Regional Integra- ted Surveys ( 1974-79 ) , GSI , North Eastern Region . The present paper embodies salient features of the polymetallic prospect of the area . Geological Set up The host rock of mineralisation occurs in the ' Potin ...
... Regional Integra- ted Surveys ( 1974-79 ) , GSI , North Eastern Region . The present paper embodies salient features of the polymetallic prospect of the area . Geological Set up The host rock of mineralisation occurs in the ' Potin ...
Page 98
... region outside the synclinorium . Efforts have been made to sub - divide the Barails of the latter region into a three fold division . While Tikak Parbat , the uppermost part of the Barails appears older than the Renji , the uppermost ...
... region outside the synclinorium . Efforts have been made to sub - divide the Barails of the latter region into a three fold division . While Tikak Parbat , the uppermost part of the Barails appears older than the Renji , the uppermost ...
Page 100
... region of Upper Assam is precluded since that would develop a much more extensive Surma deposition in the region . Conclusion To conclude , therefore , it may be emphasized that Kohima synclinorium with its Surma core has a separate ...
... region of Upper Assam is precluded since that would develop a much more extensive Surma deposition in the region . Conclusion To conclude , therefore , it may be emphasized that Kohima synclinorium with its Surma core has a separate ...
Contents
A NOTE ON THE EVOLUTION OF THE MINERAL | 17 |
Pant | 24 |
A R Nambiar | 43 |
Copyright | |
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Common terms and phrases
aegirine alkaline rocks Arunachal Pradesh assemblage Barail Range bedded biotite borehole Brahmaputra camptonites carbonatite Chalcopyrite charnockite chlorite Coal cordierite deposits Disang dissected hills drainage dyke Evans feldspar feldspathic ijolite flood plain foliation fractured garnet Geol GEOLOGICAL SURVEY gneiss Golagar basin Golagar Nala grains GSI Rec 115 Hills district Himalaya ijolite immiscibility Indravati river inner belt Kohima Kohima synclinorium Kopili Koraput lamprophyres landforms magma magnetite Manipur Meghalaya metamorphic metapelites Mikir hills mineral mineralised zone muscovite Nagaland Nala Naogaon Naogaon Sandstone NE-SW occur Orissa orthoclasite phenocrysts Phyangla Plate point bar polymetallic porphyroblasts Potin Formation pyrite pyrrhotite quartz Ranga River Ranga Valley Rec 115 pts region ridge and valley samples San Nala sandstone schist shale Shillong staurolite Structural Plateau Subansiri district sulphide mineralisation Surma Surv SURVEY OF INDIA synclinorium tectonic Tikak parbat tinguaite trending tributaries type area Umrong reservoir units Upper Assam upto