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 207
... grade of regional metamorphism are not found . in these quartzites . 2. The interbedded banded magnetite - hematite quartzites in the amphibole bearing quartzites have magnetite as a chief iron- ore , which indicates higher grade of ...
... grade of regional metamorphism are not found . in these quartzites . 2. The interbedded banded magnetite - hematite quartzites in the amphibole bearing quartzites have magnetite as a chief iron- ore , which indicates higher grade of ...
Page 241
... grade metamorphic source rocks ( Krynine , 1946 ) . From the study of 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 ...
... grade metamorphic source rocks ( Krynine , 1946 ) . From the study of 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 ...
Page 249
... grades into ferruginous types towards the sides . Layers of siliceous limonite usually border the ore - bod ́es on either side with sharp contacts . Gradation of high grade and medium grade ores into ferruginous ore or manganiferous ...
... grades into ferruginous types towards the sides . Layers of siliceous limonite usually border the ore - bod ́es on either side with sharp contacts . Gradation of high grade and medium grade ores into ferruginous ore or manganiferous ...
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Common terms and phrases
Ajanta Caves amphibole amphibole bearing quartzites amygdaloidal assemblage Balasore Balasore coast basalts beds biotite calc-silicate rocks calcite cent chambers chondrules Coarse colour convolute laminations Cretaceous crystals Deccan Traps 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 Gir forest grade grains granites heavy mineral hematite hills hornblende ilmenite intergrowth kilometres kyanite length Lenticulina limestone magnetite manganese manganese content manganiferous khondalite Marginulina massive trap meta-sediments metamorphism meteorite metres metres long metres wide nala Nishkhal north-west occur old dunes olivine opaques Orissa outcrop phenocrysts plagioclase porphyritic porphyritic trap pyroxenes quartz quartzites Rajasthan Reuss ridge rutile samples sand dunes Sastry schistosity sediments shales siliceous sillimanite Soft vesicular species Subarnarekha river Surv sutures thickness thin trend Trichinopoly Utatur stage veins vesicles vesicular trap width zircon