Records of the Geological Survey of India, Volume 105Geological Survey of India, 1973 - Earthquakes |
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Page 25
... mineral investigations commenced in 1959 for preparing the geological maps of all the islands and pari passu carry out a thorough investigation of the mineral wealth of these islands . Since then , about 3125 sq . km . have been mapped ...
... mineral investigations commenced in 1959 for preparing the geological maps of all the islands and pari passu carry out a thorough investigation of the mineral wealth of these islands . Since then , about 3125 sq . km . have been mapped ...
Page 139
... mineral phases ; the technique has also been applied in under- standing the thermal behaviour of different minerals . There is extensive literature on D. T. A. , and standard curves covering a wide mineralogi- cal range are also ...
... mineral phases ; the technique has also been applied in under- standing the thermal behaviour of different minerals . There is extensive literature on D. T. A. , and standard curves covering a wide mineralogi- cal range are also ...
Page 163
... mineral in the soil of this area is kaolinite . It has not been possible to determine the clay mineral content quantitatively in the different samples . Since clay minerals other than kaolinite are absent , it can be concluded that the ...
... mineral in the soil of this area is kaolinite . It has not been possible to determine the clay mineral content quantitatively in the different samples . Since clay minerals other than kaolinite are absent , it can be concluded that the ...
Contents
CONTENTS | 2 |
The Geology and Mineral Resources of the Andaman | 25 |
Geology of the Coal Measures in the Deccan Trap region | 69 |
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80 mesh amphibolites analysed Andaman island anorthosites apatite bands Baraganda Baratang Baratang island basaltic basin beds Bihar biotite Bramlette and Riedel calc-granulite calcareous calcite carbonate Carboniferous charnockites chemical clay coal coalfield coalseams conglomerate copper deposition Discoaster district endothermic endothermic peak Eocene estherids fauna felspar figs folds foliation Formation fossil gabbro Gangamopteris garnetiferous geochemical Geol Geological Survey Geologist glacier gneisses Gondwana grained granitic gray anorthosites graywacke hill hornblende indicate khondalites limestone lodes Lower margins metadolerite metal Middle Andaman mineral mineralisation Mussoorie Nala Nicobar occur Orissa orthopyroxene oxides para-amphibolite Permian phenocrysts phosphate phosphorite pinnules plagioclase present pyroxene quartz quartzite rocks samples sandstone sedimentary sediments shales shear shows siltstone snout South Andaman Stradner strike length Surv Survey of India thickness Thinnfeldia tion tonnes trace element ultrabasic upto valley varies veins volcanic younger ortho-amphibolite Zemu glacier zone