Records of the Geological Survey of India, Volume 113, Parts 2-4Government of India, 1983 - Geology Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 14
... phase . ( b ) The carbon - phyllites at places show interfolial leaching or ferruginous cavity fillings . To study the chalcophile content of the leached part , the limonitic cavity fillings were scooped out from bedrock samples ( of ...
... phase . ( b ) The carbon - phyllites at places show interfolial leaching or ferruginous cavity fillings . To study the chalcophile content of the leached part , the limonitic cavity fillings were scooped out from bedrock samples ( of ...
Page 86
... phase of folding is much less intense as well as spatially restricted . The third and last phase of folding ( F ) ( north - west of Wamsophi ) is also ob- served in the northeastern part of the area with a NE - SW axial trend . Though ...
... phase of folding is much less intense as well as spatially restricted . The third and last phase of folding ( F ) ( north - west of Wamsophi ) is also ob- served in the northeastern part of the area with a NE - SW axial trend . Though ...
Page 87
... phase of migmatitic mineral paragenesis . " Genesis Of Sillimanite - Corundum Bodies Petrographically the sillimanite - bearing rocks of Sonapahar area consist mainly of sillimanite , quartz , cordierite , biotite and corundum with ...
... phase of migmatitic mineral paragenesis . " Genesis Of Sillimanite - Corundum Bodies Petrographically the sillimanite - bearing rocks of Sonapahar area consist mainly of sillimanite , quartz , cordierite , biotite and corundum with ...
Contents
A Probable Zone of Carbonatite and Fenitic Rock Association | 7 |
Quantitative Correlation of Cyclic Stratigraphic Sequences | 17 |
On the Fossiliferous Ordovician Rocks of Black Mountain | 35 |
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alkali anomaly apatite Arunachal assemblage associated axial bands Beldih belt Bhutan Bihar biotite bore holes borehole Carbonaceous carbonatite Chaibasa chert chlorite chlorite schist chromite coal seam Coarse sandstone complex contours correlation Dalma Deccan basalts deformation deposits depth developed Dhanjori district Dubrajpur Dubrajpur Formation Eastern exploration F₁ fault feldspars folds foliation fossils geochemical Geol Geological Survey Ghosh gneiss Gondwana grade grains granite gneiss grey Group Hills Himalaya host rock ijolite limestone lineation magnetite Manipur Medium sandstone metamorphism metres migmatites mineralisation minerals muscovite nepheline Northern Shear Zone occur olivine ophiolite phyllites plagioclase Plate plunging Pradesh Precambrian pyrite quartz quartzite regional rock types S₁ S₂ samples sandstone Sarkar schist schistosity sector sedimentary sequence sericite serpentinite shale sillimanite Singhbhum stratigraphic structural studies sulphide Surv Survey of India tectonic texture thickness tholeiites tion trending ultramafic upto veins volcanic