Records of the Geological Survey of India, Volume 94The Survey, 1959 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
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Page 225
... heavy minerals in the 0.125-0.062 mm . grade ranges from 0.96 per cent . in sample No. 1/5 to 4.76 per cent . in ... mineral species present were quantitatively determined by a random count of 400 to 500 grains per slide . The percentage of ...
... heavy minerals in the 0.125-0.062 mm . grade ranges from 0.96 per cent . in sample No. 1/5 to 4.76 per cent . in ... mineral species present were quantitatively determined by a random count of 400 to 500 grains per slide . The percentage of ...
Page 233
... heavy mineral fraction was mounted in Canada Balsam and 400-600 grains were counted in one or more slides . Zircons ... mineral is quartz , felspar being a minor constituent . HEAVY MINERALS— Magnetic minerals . - Magnetite ranges from 0 ...
... heavy mineral fraction was mounted in Canada Balsam and 400-600 grains were counted in one or more slides . Zircons ... mineral is quartz , felspar being a minor constituent . HEAVY MINERALS— Magnetic minerals . - Magnetite ranges from 0 ...
Page 241
... heavy mineral distribution it is concluded that the sand dunes have been derived mostly from high grade metamorphic source rocks . An attempt is made below to relate the heavy mineral characteristics as outlined above with the known ...
... heavy mineral distribution it is concluded that the sand dunes have been derived mostly from high grade metamorphic source rocks . An attempt is made below to relate the heavy mineral characteristics as outlined above with the known ...
Contents
GEOLOGICAL SURVEY OF INDIA | 190 |
STRUCTURE | 200 |
SUMMARY AND CONCLUSIONS | 209 |
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amphibole amphibole bearing quartzites amphibolites amygdaloidal aperture Balasore banded magnetite-hematite quartzites basalts beds biotite calcite cent chambers chondrules colour convolute laminations Cretaceous Deccan Traps deposits dipping district dolerites dune sands dykes east enstatite felspar ferruginous Figured specimen flows folds foraminifera formations G.S.I. Type garnet Genus Geol Geological Geologist gneisses grade grains granites grey quartzites heavy mineral hematite hornblende ilmenite intergrowth Kalahandi kilometres kyanite length Lenticulina limestone magnetite manganese content manganese-ore manganiferous khondalite Marginulina massive trap meta-intrusives meta-sediments metamorphism metres metres long metres wide Nishkhal occur old dunes olivine opaques outcrop pebbles phenocrysts plagioclase porphyritic porphyritic trap pyroxenes quartz quartzites Reuss ridge rutile samples sand dunes schistosity sediments shales siliceous sillimanite Soft vesicular species Subarnarekha Subarnarekha river Survey of India sutures thickness thin trend Utatur stage veins vesicles vesicular trap white gritty quartzites width Yerabali zircon