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 41
... bands of limestone and marble present . Grey to greenish grey phyllitic quartzites and phyllites with bio- tite porphyroblasts , calcareous quartzites and impure crystalline limestone with bands of intru- sive tourmaline granites runn ...
... bands of limestone and marble present . Grey to greenish grey phyllitic quartzites and phyllites with bio- tite porphyroblasts , calcareous quartzites and impure crystalline limestone with bands of intru- sive tourmaline granites runn ...
Page 117
... bands around 0.85 and 0.92 microns in man- ganiferous chert ( Plate IVb ) may be explained in terms of Fe3 electronic transition ( Alexander and Rowan , 1981 ) . . Between ferruginous and manganiferous chert ( Plate IVa & b ) , the ...
... bands around 0.85 and 0.92 microns in man- ganiferous chert ( Plate IVb ) may be explained in terms of Fe3 electronic transition ( Alexander and Rowan , 1981 ) . . Between ferruginous and manganiferous chert ( Plate IVa & b ) , the ...
Page 5
... bands . They 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 ...
... bands . They 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 ...
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