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 195
... magnetite - hematite quartzites within the grey quartzites occur as a continuous band extending from 1574 to 2169 ridge and as a minor band at the eastern and north - eastern slopes of 1574 ridge . width of the outcrops varies from 24 ...
... magnetite - hematite quartzites within the grey quartzites occur as a continuous band extending from 1574 to 2169 ridge and as a minor band at the eastern and north - eastern slopes of 1574 ridge . width of the outcrops varies from 24 ...
Page 207
... magnetite - hematite quartzites in the amphibole bearing quartzites have magnetite as a chief iron- ore , which indicates higher grade of regional metamorphism ( Harker , 1952 , p . 237 ) . 3. Similarly the amphibolites and pyroxenites ...
... magnetite - hematite quartzites in the amphibole bearing quartzites have magnetite as a chief iron- ore , which indicates higher grade of regional metamorphism ( Harker , 1952 , p . 237 ) . 3. Similarly the amphibolites and pyroxenites ...
Page 263
... magnetite grains have been widely martitised , but the ilmenite grains are fresh and unaffected thereby suggesting that the formation of rutile - hematite intergrowth is independent of marti- tisation and is also not related to common ...
... magnetite grains have been widely martitised , but the ilmenite grains are fresh and unaffected thereby suggesting that the formation of rutile - hematite intergrowth is independent of marti- tisation and is also not related to common ...
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