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 11
... Plate 1.1 ) between the extreme north and south of the point bar is 30 m ( Plate 1.1 ) The materials are found to have been deposited in three different levels ( I , II and III and Plate 1.1 ) of elevations . The heights of lowest ...
... Plate 1.1 ) between the extreme north and south of the point bar is 30 m ( Plate 1.1 ) The materials are found to have been deposited in three different levels ( I , II and III and Plate 1.1 ) of elevations . The heights of lowest ...
Page 27
... ( Plate 2.1 & 2.2 ) The thicker dykes invariably show chilled margins , wherein they are finer grained compared to holocrystalline dyke interiors . They generally enclose country rock fragments . Occasionally the country rocks are ...
... ( Plate 2.1 & 2.2 ) The thicker dykes invariably show chilled margins , wherein they are finer grained compared to holocrystalline dyke interiors . They generally enclose country rock fragments . Occasionally the country rocks are ...
Page 43
Geological Survey of India. Plate 2 2.1 Explanation of Plates 2.2 2.3 Thin lamprophyre dyke ( L ) traversing the gneisses . Loc : Riangdo river . Carbonatite dyke ( C ) traversing the gneisses . Note the tapering of the dyke . Loc ...
Geological Survey of India. Plate 2 2.1 Explanation of Plates 2.2 2.3 Thin lamprophyre dyke ( L ) traversing the gneisses . Loc : Riangdo river . Carbonatite dyke ( C ) traversing the gneisses . Note the tapering of the dyke . Loc ...
Contents
A NOTE ON THE EVOLUTION OF THE MINERAL | 17 |
Pant | 24 |
A R Nambiar | 43 |
Copyright | |
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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