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 30
... length of 400 m and width of 2-5 m . Ghosh and Ghosh ( 1979 ) reported the following ranges of metal content in the silicified rock . Cu 20 50 ppm ; Pb 50-800 ppm ; Zn 50-800 ppm . Galena fractions in the silicified zone analysed , Ag ...
... length of 400 m and width of 2-5 m . Ghosh and Ghosh ( 1979 ) reported the following ranges of metal content in the silicified rock . Cu 20 50 ppm ; Pb 50-800 ppm ; Zn 50-800 ppm . Galena fractions in the silicified zone analysed , Ag ...
Page 52
... length 17.10 to 20.50 m from south end of the trench and two such picked up samples were collected between length 6.35 to 8.00m & to 19.00m respectively from the south end of the trench No. These three samples showed high values of gold ...
... length 17.10 to 20.50 m from south end of the trench and two such picked up samples were collected between length 6.35 to 8.00m & to 19.00m respectively from the south end of the trench No. These three samples showed high values of gold ...
Page 52
... lengths varying from 0.5 m to length . The reported mineralised zones with injectie 2.00 m . The lengths of the individual channel samples of thin bands of grey quartz in association with py were governed by lithologic variations of the ...
... lengths varying from 0.5 m to length . The reported mineralised zones with injectie 2.00 m . The lengths of the individual channel samples of thin bands of grey quartz in association with py were governed by lithologic variations of the ...
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