Records of the Geological Survey of India, Volume 131, Part 2The Survey, 1996 - 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 32
... quartz + muscovite + sericite + opaques ± plagioclase + biotite ± garnet ± zircon ± apatite ± epidote . Quartz occur both as phenocrysts and as groundmass constitutents . A volcanic to sub - volcanic texture is exhibited . Phenocryts of ...
... quartz + muscovite + sericite + opaques ± plagioclase + biotite ± garnet ± zircon ± apatite ± epidote . Quartz occur both as phenocrysts and as groundmass constitutents . A volcanic to sub - volcanic texture is exhibited . Phenocryts of ...
Page 98
... Quartz veins occur parallel to S , ( first generation schistosity ) , S , ( crenulation cleavage ) and at places discordant to the above two planes . The S , and S , trends vary from N10-15E - S10-15W and N10-15W - S10-15E . Of these quartz ...
... Quartz veins occur parallel to S , ( first generation schistosity ) , S , ( crenulation cleavage ) and at places discordant to the above two planes . The S , and S , trends vary from N10-15E - S10-15W and N10-15W - S10-15E . Of these quartz ...
Page 100
... quartz veins present are parallel to S , or are discordant to both the cleavages and formational contacts . The old workings ( about 55 nos . ) occur all over the area and may or may not be associated with quartz veins . Studies have ...
... quartz veins present are parallel to S , or are discordant to both the cleavages and formational contacts . The old workings ( about 55 nos . ) occur all over the area and may or may not be associated with quartz veins . Studies have ...
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Common terms and phrases
aerogeophysical aeromagnetic airborne geophysical analysis anomaly assemblage Barakar Barakar coal seams Barakar Formation basin belt Bhutan Bihar biotite block borehole carbonaceous carbonatite carried chlorite clay Coalfield coarse grained Code continued covered Cruise database delineated depth district Division drilling Dzongkhag east eastern exploration for coal faults field season foliation garnet geochemical sampling geological mapping gneiss gold mineralisation Gondwana grade granite granulite grey Ground evaluation Group heavy mineral identified India indicated interpretation intersected investigation isotopic Kamthi layered lignite limestone located Madhya Pradesh mafic magnetic metamorphism multisensor Nagpur district Neoproterozoic occur Orissa OVERVIEW phyllite plagioclase programme quartz quartz veins quartzite Rajasthan range Raniganj Regional exploration sand sandstone scale schist seabed seam zones sections sector sediments sequence shale shallow shear zone shelf Singhbhum Sohagpur sq km studies Sub-project sulphide surface surveys Talchir Formation thickness Toposheet traverse trending ultramafic upto Valley values varying volcanics