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 68
... ridge , a large depression giving to a lower geomorphic surface is discernible imagery . This surface is bounded by fault scarps along the western and southwestern margins . In Mikir hills , the meta- sedimentary rocks are peneplained ...
... ridge , a large depression giving to a lower geomorphic surface is discernible imagery . This surface is bounded by fault scarps along the western and southwestern margins . In Mikir hills , the meta- sedimentary rocks are peneplained ...
Page 69
... ridge formed due to the occurrence of resistant rocks . Flanks are marked by a number of linear , narrow and closely spaced subdued ridges and furrows owing their origin to a pack of alternately harder and softer rocks . Development of ...
... ridge formed due to the occurrence of resistant rocks . Flanks are marked by a number of linear , narrow and closely spaced subdued ridges and furrows owing their origin to a pack of alternately harder and softer rocks . Development of ...
Page 74
... Ridge And Valley Province B - lla Structural Plateau Plain B - lib Dissected Structural Plateau SHILLONG B - lb 8 ... Ridge Crest Geomorphic Boundary State Capital D. K. Chakrabarti et al . G.S.I. Rec . 115 , Ports 384 , Anonymous ...
... Ridge And Valley Province B - lla Structural Plateau Plain B - lib Dissected Structural Plateau SHILLONG B - lb 8 ... Ridge Crest Geomorphic Boundary State Capital D. K. Chakrabarti et al . G.S.I. Rec . 115 , Ports 384 , Anonymous ...
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