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 3
... represent the first fold axis ( F1 ) of the area . In the quartzite band , east of Ubaria ( 23 ° 17′N : 85 ° 20′15 ′′ E ) , the intersection is paralleled by mineral lineation and deformed by later folds . 2. Puckers : These are ...
... represent the first fold axis ( F1 ) of the area . In the quartzite band , east of Ubaria ( 23 ° 17′N : 85 ° 20′15 ′′ E ) , the intersection is paralleled by mineral lineation and deformed by later folds . 2. Puckers : These are ...
Page 26
... represented by a sequence of metapelites , psammites , metamorphosed calc silicate rocks , metabasites , dolerites and ... represent an older sequence than rocks to the north . These authors renamed the " Iron Ore Stage " of the north ...
... represented by a sequence of metapelites , psammites , metamorphosed calc silicate rocks , metabasites , dolerites and ... represent an older sequence than rocks to the north . These authors renamed the " Iron Ore Stage " of the north ...
Page 62
... represents the core and western limb of a major F2 - fold closure on quartzite around Churia pahar , just to the south of ... represent a F2 closure on So parallel S1 plane as the chlorite schist at its core is found to be puckered with ...
... represents the core and western limb of a major F2 - fold closure on quartzite around Churia pahar , just to the south of ... represent a F2 closure on So parallel S1 plane as the chlorite schist at its core is found to be puckered with ...
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