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 63
... schist facies and at present composed of amphiboles i.e. hornblende and / or tremolite , with sodic plagioclase and subordinate amount of chlorite , epidote , zoisite and quartz . The amygdules are mostly of quartz . Found interlayered ...
... schist facies and at present composed of amphiboles i.e. hornblende and / or tremolite , with sodic plagioclase and subordinate amount of chlorite , epidote , zoisite and quartz . The amygdules are mostly of quartz . Found interlayered ...
Page 64
... chlorite schist horizon . South - east of Kanyaluka , where the volcanics and the chlorite schists are absent or rarely seen , the Dhanjori quartzites are overlain by Chaibasa Formation mica schists , the entire sequence dipping towards ...
... chlorite schist horizon . South - east of Kanyaluka , where the volcanics and the chlorite schists are absent or rarely seen , the Dhanjori quartzites are overlain by Chaibasa Formation mica schists , the entire sequence dipping towards ...
Page 65
... mica schist , this chlorite schist horizon is sugges- ted to be included as the lower most member of the Chaibasa Formation of Sarkar and Saha ( 1962 ) . 4. Though there has been no structural break or discontinuity on either side of ...
... mica schist , this chlorite schist horizon is sugges- ted to be included as the lower most member of the Chaibasa Formation of Sarkar and Saha ( 1962 ) . 4. Though there has been no structural break or discontinuity on either side of ...
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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Common terms and phrases
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