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 18
Geological Survey of India. The granite gneiss complex around Ranchi is a com- posite mass consisting mainly of granite gneiss , migma- tites and massive granite with enclaves of para- and orthometamorphics , dykes of dolerite and ...
Geological Survey of India. The granite gneiss complex around Ranchi is a com- posite mass consisting mainly of granite gneiss , migma- tites and massive granite with enclaves of para- and orthometamorphics , dykes of dolerite and ...
Page 8
... granite , ( ii ) carbonate rich granite and ( iii ) sericite granite . They are subjected to intense shearing and crushing . The presence of undeformed stumpy tourmaline crystals in the sheared granites indi- cates a post - shearing ...
... granite , ( ii ) carbonate rich granite and ( iii ) sericite granite . They are subjected to intense shearing and crushing . The presence of undeformed stumpy tourmaline crystals in the sheared granites indi- cates a post - shearing ...
Page 10
... granite , ( ii ) carbonate rich granite and ( iii ) sericite granite . They are subjected to intense shearing and crushing . The presence of undeformed stumpy tourmaline crystals in the sheared granites indi- cates a post - shearing ...
... granite , ( ii ) carbonate rich granite and ( iii ) sericite granite . They are subjected to intense shearing and crushing . The presence of undeformed stumpy tourmaline crystals in the sheared granites indi- cates a post - shearing ...
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