Records of the Geological Survey of India, Volume 105Geological Survey of India, 1973 - Earthquakes |
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Page 35
... depth . 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 ...
... depth . 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 ...
Page 64
... depth is approximately 8500 tonnes . The main mass is likely to extend to a depth of 30 m . In the Budha nala sector 20 km . from Mayabundar the total surface area of the exposed mass is about 5000 sq . m . and the reserve per metre depth ...
... depth is approximately 8500 tonnes . The main mass is likely to extend to a depth of 30 m . In the Budha nala sector 20 km . from Mayabundar the total surface area of the exposed mass is about 5000 sq . m . and the reserve per metre depth ...
Page 153
... depth of about 30 m . below the level of lode intersections in different boreholes . Sub- blocks have been constructed around each borehole taking the influence as half way between two lode intersections in the adjoining boreholes . The ...
... depth of about 30 m . below the level of lode intersections in different boreholes . Sub- blocks have been constructed around each borehole taking the influence as half way between two lode intersections in the adjoining boreholes . The ...
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