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
... mineral composition , great variations are noted in the proportion of mafic minerals ( mainly biotite ) and potash and soda feldspars . Depen ding upon texture , structure and mineral composition the granitic rocks of the Ranchi area ...
... mineral composition , great variations are noted in the proportion of mafic minerals ( mainly biotite ) and potash and soda feldspars . Depen ding upon texture , structure and mineral composition the granitic rocks of the Ranchi area ...
Page 16
... mineral lineations marked ubiquitously in the metamorphites by preferred dimensional orientation of prismatic and flaky minerals . In Turamdih sector , rootless hinges of minor F1 - folds are best preserved in the magnetitic quartzite ...
... mineral lineations marked ubiquitously in the metamorphites by preferred dimensional orientation of prismatic and flaky minerals . In Turamdih sector , rootless hinges of minor F1 - folds are best preserved in the magnetitic quartzite ...
Page 40
... mineral deposits . NIR P 5 no - 731 / 8 Econ . Geol . Fleischar , M. , 1955 - Minor elements in some sulphide , minerals . Econ . Geol . 50th Ann . Vol , pp . 970-1024 . Ghosh , S. , Mitra , F.N. and Ghosh , B.K. , 1976 - Regional ...
... mineral deposits . NIR P 5 no - 731 / 8 Econ . Geol . Fleischar , M. , 1955 - Minor elements in some sulphide , minerals . Econ . Geol . 50th Ann . Vol , pp . 970-1024 . Ghosh , S. , Mitra , F.N. and Ghosh , B.K. , 1976 - Regional ...
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