Records of the Geological Survey of India, Volume 106The Survey, 1975 - Earthquakes Includes the Annual report of the Geological Survey of India, 1867- |
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Page 41
... quartz , quartzite , altered grains of felspar , the majority of the grains being around 5 mm in size . The matrix is mostly arenaceous with some altered felspar . South of Sawa , a 5 m thick conglomerate underlies a medium to coarse ...
... quartz , quartzite , altered grains of felspar , the majority of the grains being around 5 mm in size . The matrix is mostly arenaceous with some altered felspar . South of Sawa , a 5 m thick conglomerate underlies a medium to coarse ...
Page 194
... quartz veins of the Digharsai area occur in the quartzite , which is rich in quartz and exhibits compositional bandings with iron - oxides and , in places , sericite and muscovite . Besides compositional variations , the bandings are ...
... quartz veins of the Digharsai area occur in the quartzite , which is rich in quartz and exhibits compositional bandings with iron - oxides and , in places , sericite and muscovite . Besides compositional variations , the bandings are ...
Page 209
... quartz bodies are abundant in areas of mesoscopic folds , whereas in areas where mesoscopic folds are absent or rare , the first type of veins are more frequent . However , along these structurally controlled planes and directions the ...
... quartz bodies are abundant in areas of mesoscopic folds , whereas in areas where mesoscopic folds are absent or rare , the first type of veins are more frequent . However , along these structurally controlled planes and directions the ...
Contents
Volume 106 | 1 |
WESTERN REGION | 16 |
Engineering and Transport Division | 82 |
Copyright | |
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alignment alluvium amphibolite Andhra Pradesh Asstt bands basalt basin bauxite Bihar biotite block bore holes boreholes Calcutta carried charnockite chert clay coal coalfield comprising copper Deccan Trap Delhi deposits depth Director district Division dolerite dolomite drill holes dykes east electrical logging exploration exploratory fault felspar foliation formation fossils garnetiferous geochemical geohydrological geological investigations geological mapping Geological Survey Geologist Jr geophysical Ghosh gneiss Gondwana grade grained granite gneiss graphite grey Groundwater hornblende indicated laboratory laterite limestone located Lucknow metres million tonnes mineralisation minerals nala occurs Orissa pegmatite phosphate phyllites pits power house Pradesh Project quartz quartzite Rajasthan Region river rock types S/Shri samples sandstone schist seams sediments shales Sharma shear Shri Singh Sinha spillway Srivastava strike length studies Survey of India systematic thickness thin toposheet Trap Flow traverse trending tubewells tunnel upto valley varies veins Vindhyan West Bengal zone