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 52
... bodies where trenching was not possible without blasting due to hardness of the strata . While collecting samples from the trenches , the floor of the concerned trench was thoroughly cleaned and chan- nel samples ( width : 5 cm and ...
... bodies where trenching was not possible without blasting due to hardness of the strata . While collecting samples from the trenches , the floor of the concerned trench was thoroughly cleaned and chan- nel samples ( width : 5 cm and ...
Page 52
... bodies where trenching was not of quartz - sericite - schist rock , was thoroughly investig possible without blasting due to hardness of the strata . for ascertaining gold mineralization . Both surface While collecting samples from the ...
... bodies where trenching was not of quartz - sericite - schist rock , was thoroughly investig possible without blasting due to hardness of the strata . for ascertaining gold mineralization . Both surface While collecting samples from the ...
Page 57
... body . That the body lies at a shallow depth is quite evident from the small width of the anomaly as well as the steep ... bodies are associated with limonitized pegmatites . Exploratory trenching carried out in both these areas have ...
... body . That the body lies at a shallow depth is quite evident from the small width of the anomaly as well as the steep ... bodies are associated with limonitized pegmatites . Exploratory trenching carried out in both these areas have ...
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