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 16
... sector , rootless hinges of minor F1 - folds are best preserved in the magnetitic quartzite of Bhitar- dari and sericitic quartzite to the north of Ramchandra Pahar . These are extremely flattened similar folds with perfect reclined ...
... sector , rootless hinges of minor F1 - folds are best preserved in the magnetitic quartzite of Bhitar- dari and sericitic quartzite to the north of Ramchandra Pahar . These are extremely flattened similar folds with perfect reclined ...
Page 18
... sector . In the synoptic L1 diagram ( Fig . 2f ) for the sector the statistical F1 axis defined by a prominent 19 % maxima plunges 40 ° towards N44 ° and depicts a recli- ned geometry as the rakes of mean L , on average S1 approaches 90 ...
... sector . In the synoptic L1 diagram ( Fig . 2f ) for the sector the statistical F1 axis defined by a prominent 19 % maxima plunges 40 ° towards N44 ° and depicts a recli- ned geometry as the rakes of mean L , on average S1 approaches 90 ...
Page 22
... sector , contours 2-4-8-14 % ; crosses , dots and triangles indicate L1 , L2 and L , lineations . b . Selective equal area projection diagram for 64 S , poles from Turamdih sector ; contours 1-5-15-25 % . c . Selective equal area ...
... sector , contours 2-4-8-14 % ; crosses , dots and triangles indicate L1 , L2 and L , lineations . b . Selective equal area projection diagram for 64 S , poles from Turamdih sector ; contours 1-5-15-25 % . c . Selective equal area ...
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