Records of the Geological Survey of India, Volume 105Geological Survey of India, 1973 - Earthquakes |
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Page 61
... basin . The modern deep water sediments in this basin are predominantly hemipelagic silty clays of deltaic origin , and , the island derived sedi- ment consists of rare calc - arenites . The Andaman basin receives sediments from the ...
... basin . The modern deep water sediments in this basin are predominantly hemipelagic silty clays of deltaic origin , and , the island derived sedi- ment consists of rare calc - arenites . The Andaman basin receives sediments from the ...
Page 62
... basin in a very rugged condition with submarine ridges , shallow basins and deep gorges . Erosion and rapid filling ... basin , partly filled up , was already widened and connected up into a bigger basin . So that during the Oligocene ...
... basin in a very rugged condition with submarine ridges , shallow basins and deep gorges . Erosion and rapid filling ... basin , partly filled up , was already widened and connected up into a bigger basin . So that during the Oligocene ...
Page 74
a partial preservation in the form of a basin with one of its limbs faulted . In the Bandar coalfield the nose of the basin is seen preserved in the south . Its continuity northwards , under the initial cover of the Trap and Lameta ...
a partial preservation in the form of a basin with one of its limbs faulted . In the Bandar coalfield the nose of the basin is seen preserved in the south . Its continuity northwards , under the initial cover of the Trap and Lameta ...
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