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 43
... lower limestone members with a middle member of dark , grey slates and carbonaceous phyllites . The first author has mapped the ' Barishong Limestone ' in the upper Thimphu - Chu valley , NW Bhutan , which falls in the main ' Tethys ...
... lower limestone members with a middle member of dark , grey slates and carbonaceous phyllites . The first author has mapped the ' Barishong Limestone ' in the upper Thimphu - Chu valley , NW Bhutan , which falls in the main ' Tethys ...
Page 8
... Lower bed ' . Later , Sah and Shah ( op . cit . ) restudied this section and found Lower Gondwana Glossopteris - Vertebraria assemblage and Upper Gond- wana Ptilophyllum assemblage in Dubrajpur Formation is separated by a ...
... Lower bed ' . Later , Sah and Shah ( op . cit . ) restudied this section and found Lower Gondwana Glossopteris - Vertebraria assemblage and Upper Gond- wana Ptilophyllum assemblage in Dubrajpur Formation is separated by a ...
Page 55
... Lower to Middle Palaeozoic age and a minor part is of Lower Gondwana age . Recent work by Mullick and Basu Chowdhury ( 1967,1968 ) , Nandy et al ( 1975 ) , Talukdar and Mazumdar ( 1976 ) and Jain and Thakur ( 1976 ) indicates that the ...
... Lower to Middle Palaeozoic age and a minor part is of Lower Gondwana age . Recent work by Mullick and Basu Chowdhury ( 1967,1968 ) , Nandy et al ( 1975 ) , Talukdar and Mazumdar ( 1976 ) and Jain and Thakur ( 1976 ) indicates that the ...
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