Records of the Geological Survey of India, Volume 105Geological Survey of India, 1973 - Earthquakes |
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Page 35
... Quartzite : These are meta - orthoquartzites , light gray or pink in colour and composed of quartz only . Quartzites are very common as pebbles in the conglomerate and as xenoliths in the ultrabasics . Phyllite and Schist : Very few ...
... Quartzite : These are meta - orthoquartzites , light gray or pink in colour and composed of quartz only . Quartzites are very common as pebbles in the conglomerate and as xenoliths in the ultrabasics . Phyllite and Schist : Very few ...
Page 161
... Quartzite series consists of quart- zite interbanded with low magnesia and high silica limestone . The Crystalline series is represented by quartzite and schists ( sericite , muscovite and biotite bearing with irregular development of ...
... Quartzite series consists of quart- zite interbanded with low magnesia and high silica limestone . The Crystalline series is represented by quartzite and schists ( sericite , muscovite and biotite bearing with irregular development of ...
Page 194
... quartzite ; shale . Massive arkosic sandstone or quartzite ; pebble beds . Alternating quartzite ; often pebbly , with shale or slate . Micaceous shale or slate with few quartzite . Thick series of carbonaceous shales and dark graywacke ...
... quartzite ; shale . Massive arkosic sandstone or quartzite ; pebble beds . Alternating quartzite ; often pebbly , with shale or slate . Micaceous shale or slate with few quartzite . Thick series of carbonaceous shales and dark graywacke ...
Contents
CONTENTS | 2 |
The Geology and Mineral Resources of the Andaman | 25 |
Geology of the Coal Measures in the Deccan Trap region | 69 |
Copyright | |
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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