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 233
... Analysis . - The results of mechanical analysis were statis- tically studied ( Table 2 ) and the critical values Q1 and Q , obtained from the cumulative curves were plotted on a Niggli diagram ( Pl . 10 ) . Most of the dune sand ...
... Analysis . - The results of mechanical analysis were statis- tically studied ( Table 2 ) and the critical values Q1 and Q , obtained from the cumulative curves were plotted on a Niggli diagram ( Pl . 10 ) . Most of the dune sand ...
Page 263
... analysis and the results obtained have been shown in table 1. An analysis of ilmenite ore with exsolved hematite has also been quoted from Edwards ' ( 1938 ) for comparison . FeO MnO MgO TiO2 Fe203 SiO2 FeO MnO TiO2 Fe203 TABLE 1 1 2 3 ...
... analysis and the results obtained have been shown in table 1. An analysis of ilmenite ore with exsolved hematite has also been quoted from Edwards ' ( 1938 ) for comparison . FeO MnO MgO TiO2 Fe203 SiO2 FeO MnO TiO2 Fe203 TABLE 1 1 2 3 ...
Page 264
... analysis does not show magnetite or hematite in the analysed sample , and the mineral is found homogene- ous under microscope . It therefore seems probable that the excess Fe + 3 ( calculated as Fe0 , in the analysis ) , and , Fe + 2 ...
... analysis does not show magnetite or hematite in the analysed sample , and the mineral is found homogene- ous under microscope . It therefore seems probable that the excess Fe + 3 ( calculated as Fe0 , in the analysis ) , and , Fe + 2 ...
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