Records of the Geological Survey of India, Volume 113, Part 3The Survey, 1985 - 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 6
... schistosity . Assemblage 3 is obtained from south of Bankuli ( 23 ° 15′N : 85 ° 10′15 ′′ E ) . The andalusite porphyroblasts are large and rectangular and occur with their elongation both parallel to and across the schistosity which ...
... schistosity . Assemblage 3 is obtained from south of Bankuli ( 23 ° 15′N : 85 ° 10′15 ′′ E ) . The andalusite porphyroblasts are large and rectangular and occur with their elongation both parallel to and across the schistosity which ...
Page 35
... schistosity S , surface ; acicular crystals of sillimanite also occur along the S- surface . Tourmaline occur as stumpy elongated post tectonic crystals without any preferred orientation . Texture is lepidioblastic and schistose ...
... schistosity S , surface ; acicular crystals of sillimanite also occur along the S- surface . Tourmaline occur as stumpy elongated post tectonic crystals without any preferred orientation . Texture is lepidioblastic and schistose ...
Page 61
... schistosity ( S1 ) planes , orientation of stretched amygdules in volcanics and longest axes of stretched pebbles in conglomerates and the mineral linea- ions show a striking parallelism and are related to F1- old movement . F1 - folds ...
... schistosity ( S1 ) planes , orientation of stretched amygdules in volcanics and longest axes of stretched pebbles in conglomerates and the mineral linea- ions show a striking parallelism and are related to F1- old movement . F1 - folds ...
Contents
Structural evolution of Precambrians in parts of north Singhbhum BiharA Gupta | 13 |
Geology and mineralisation along the northern shear zone Purulia district West | 25 |
BengalAn upto date appraisalM N Kumar N Das and S Das Gupta | 33 |
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anomaly zone antiform apatite assemblage axial plane axis bands Barakar Formation Baripada Basu Beldih belt Bihar biotite carbon-phyllite Cataclasite Chaibasa Chaibasa Formation chlorite chlorite schist horizon conglomerate contours copper Dalma syncline deformation Dhanjori dipping district domains Dubrajpur Formation Dulmi F₁ F₂ feldspars folds foliation fraction geochemical Geol Geological Survey geophysical Ghosh gneiss grains granite granite gneiss granitic rocks Gupta hill hornblende Kandra Kutni kyanite limestone lineation magnetite metamorphic mica schists migmatites mineral mineralisation muscovite Northern Shear Zone occur Orissa panned heavy pelitic phyllite plagioclase planar Plate plunging Precambrian puckers pyrite quartz quartzite Rajmahal Rangpo Records Volume 113 regional S₁ plots S₂ samples Sarkar Sarwan Pahar section schist schistosity sector sequence sericite Shear Zone silicified Singhbhum Singhbhum Shear Zone springs stratigraphic stream sediment structural Subarnarekha river sulphide Surv Survey of India tectonic tectonite trench Turamdih upto