Records of the Geological Survey of India, Volume 106Geological Survey of India, 1971 - Earthquakes Vols. 1- include Report of the Geological Survey, 1867- ; v. 32- include Review of the mineral production of India, 1898/1903- ; v. 75 consists of Professional papers, no. 1-16; v. 76 consists of Bulletins of economic minerals. |
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Page 173
... pegmatite and vein quartz occur in the area . Granite , pegmatite and quartz vein are intrusive in the metamorphics . Migmatites occur in association with the granites , granite gneisses and pegmatite . The general trend of foliation of ...
... pegmatite and vein quartz occur in the area . Granite , pegmatite and quartz vein are intrusive in the metamorphics . Migmatites occur in association with the granites , granite gneisses and pegmatite . The general trend of foliation of ...
Page 175
... pegmatite bodies of small dimensions within the mica schists country to the southwest of Gobindih , where minor quantity of Beryl also occurs . Large erratic crystals of potash feldspar were also noted at places in small bodies of pegmatite ...
... pegmatite bodies of small dimensions within the mica schists country to the southwest of Gobindih , where minor quantity of Beryl also occurs . Large erratic crystals of potash feldspar were also noted at places in small bodies of pegmatite ...
Page 209
... pegmatites are roughly conformable with the schistosity while local discordance is not uncommon . Sill - like bodies of pegmatite , concordant and co - folded with the bedding but discordant with the axial plane schistosity of the ...
... pegmatites are roughly conformable with the schistosity while local discordance is not uncommon . Sill - like bodies of pegmatite , concordant and co - folded with the bedding but discordant with the axial plane schistosity of the ...
Contents
Volume 106 | 1 |
EASTERN REGION CALCUTTA | 17 |
Publication Division | 50 |
Copyright | |
27 other sections not shown
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Common terms and phrases
alignment alluvium amphibolite Andhra Pradesh anomaly aquifers bands Basin bauxite bed rock Bihar biotite block bore holes boreholes carried charnockite clay coal Coalfield comprising copper covered an area deposits Depth to water dips dist district dolerite dolomite drill holes electrical logging exploration Exploratory drilling folds foliation formation garnetiferous geochemical geohydrological geological investigations geological mapping geophysical gneiss Gondwana grade granite gneiss graphite Groundwater Hazaribagh district Hydel indicated Khondalites laterite limestone located magnetite mapped an area mapped on scale metres mica schist million tonnes mineralised zones minerals nala Orissa pegmatite period under review phyllites pits power house Project pyrite quartzite Rajasthan recommended Region rock types S/Shri sand sandstone Scheme schist seams sediments shales shear zone Sheet Shri sillimanite Siwalik spillway strike length studies Subansiri sulphide Survey of India systematic thickness toposheet total meterage traverse trending tubewells tunnel underlain upto valley varies West Bengal