Records of the Geological Survey of India, Volume 105Geological Survey of India, 1973 - Earthquakes |
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Page 39
... volcanic and ultramafic rocks of the Andaman and Nicobar islands . Thus the group ( Ray and Saha 1968 ) can be ... Volcanic rocks occupy large tracts in the South Andaman and smaller areas gradually towards north . In South Andaman the ...
... volcanic and ultramafic rocks of the Andaman and Nicobar islands . Thus the group ( Ray and Saha 1968 ) can be ... Volcanic rocks occupy large tracts in the South Andaman and smaller areas gradually towards north . In South Andaman the ...
Page 61
... volcanic arc , the orthogeosyncline was subsiding and flooded by a few volcanic flows . The marginal upwarping must have shifted the sedi- ments to the centre and metamorphosed them to low grades . The advent of Laramide phase of ...
... volcanic arc , the orthogeosyncline was subsiding and flooded by a few volcanic flows . The marginal upwarping must have shifted the sedi- ments to the centre and metamorphosed them to low grades . The advent of Laramide phase of ...
Page 91
... volcanic water . Chaterji and Guha ( 1968 ) observ- ed that these springs evidently receive their thermal energy from the heat generated due to faulting as well as from volcanic emanations which may represent the remnant of the thermal ...
... volcanic water . Chaterji and Guha ( 1968 ) observ- ed that these springs evidently receive their thermal energy from the heat generated due to faulting as well as from volcanic emanations which may represent the remnant of the thermal ...
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