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. |
From inside the book
Results 1-3 of 12
Page 18
... recorded in Table 1. Unit B is the relevant unit for the present work and is described in greater detail below : - Unit B - - Various types of interbedded schists constitute the lithological components of Unit B. These are chlorite ...
... recorded in Table 1. Unit B is the relevant unit for the present work and is described in greater detail below : - Unit B - - Various types of interbedded schists constitute the lithological components of Unit B. These are chlorite ...
Page 27
... recorded from the area have focal depths varying between 10 and 30 kms , indicative of shallow seismicity . The dyke activity is more intense in the vicinity of the Nongchram fault , particularly in the southern part of the fault . The ...
... recorded from the area have focal depths varying between 10 and 30 kms , indicative of shallow seismicity . The dyke activity is more intense in the vicinity of the Nongchram fault , particularly in the southern part of the fault . The ...
Page 48
... recorded both from the ' Potin Formation and the ' Yazali Zone ' . Prismatic , str- ongly pleochroic staurolite grains of ' Yazali zone ' are mostly unaltered , whereas those from the mineralised Zone , near bore hole RVS - 6 ( Fig 10 ) ...
... recorded both from the ' Potin Formation and the ' Yazali Zone ' . Prismatic , str- ongly pleochroic staurolite grains of ' Yazali zone ' are mostly unaltered , whereas those from the mineralised Zone , near bore hole RVS - 6 ( Fig 10 ) ...
Contents
A NOTE ON THE EVOLUTION OF THE MINERAL | 17 |
Pant | 24 |
A R Nambiar | 43 |
Copyright | |
3 other sections not shown
Other editions - View all
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