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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... represent sedimentary structures and textures . Discordant sulphide veins and other features , viz . , occurrence of isolated angular fragments of host rocks within the sulphide layer , horse tail structure , anasto- mosing veins ...
... represent sedimentary structures and textures . Discordant sulphide veins and other features , viz . , occurrence of isolated angular fragments of host rocks within the sulphide layer , horse tail structure , anasto- mosing veins ...
Page 5
... 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 6
... represent an older sequence than rocks to the north . These authors renamed the " Iron Ore Stage " of the north ( Dunn and De , 1942 ) as the " Dhalbhum Formation " , a part of the newly created " Singhbhum Group " ( 2000— 1700 Ma ) ...
... represent an older sequence than rocks to the north . These authors renamed the " Iron Ore Stage " of the north ( Dunn and De , 1942 ) as the " Dhalbhum Formation " , a part of the newly created " Singhbhum Group " ( 2000— 1700 Ma ) ...
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 |
Copyright | |
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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