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 81
... suggest little effect of crustal contamination . In contrast the scattering of points in the plots of K vs K / Rb , Sr vs Rb and Sr vs Rb / Sr ( Figs . 15-17 ) , along with high Ti and Rb content indicate selective diffusion of ...
... suggest little effect of crustal contamination . In contrast the scattering of points in the plots of K vs K / Rb , Sr vs Rb and Sr vs Rb / Sr ( Figs . 15-17 ) , along with high Ti and Rb content indicate selective diffusion of ...
Page 8
... suggest the mineralization of the area to be dominantly Pb - Zn bearing . The distribution pattern of the anomalies suggest dispersed nature of mineralization . ( d ) The disposition and nature of Zn / Pb ratio conto- urs suggest the ...
... suggest the mineralization of the area to be dominantly Pb - Zn bearing . The distribution pattern of the anomalies suggest dispersed nature of mineralization . ( d ) The disposition and nature of Zn / Pb ratio conto- urs suggest the ...
Page 60
... suggest a tectonic model based on evidence discussed above , yet from the astonishing similarities with the Jura folds it is tempting to suggest a decollement origin for the Surma folds implying an epidermal nature with little or no ...
... suggest a tectonic model based on evidence discussed above , yet from the astonishing similarities with the Jura folds it is tempting to suggest a decollement origin for the Surma folds implying an epidermal nature with little or no ...
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