Records of the Geological Survey of India, Volume 105Geological Survey of India, 1973 - Earthquakes |
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Page 15
... indicate a general Lower Permian age for these beds . Fauna of the Salt Range - Conularia Beds The Conularia beds ... indicates a warm- water condition . The age indicated is Sakmarian and partly 15.
... indicate a general Lower Permian age for these beds . Fauna of the Salt Range - Conularia Beds The Conularia beds ... indicates a warm- water condition . The age indicated is Sakmarian and partly 15.
Page 57
... indicate that they are of good quality B. F. or even S. M. S. grade . The CaO content decreases from the bottom to the top of the forma- tion . The upper beds occurring in the Briton point area of the John Lawrence island represent ...
... indicate that they are of good quality B. F. or even S. M. S. grade . The CaO content decreases from the bottom to the top of the forma- tion . The upper beds occurring in the Briton point area of the John Lawrence island represent ...
Page 124
... indicates intratelluric crys- tallisation of aegirine - augite apparently from an alkali rich mafic magma from which some nepheline also seems to have crystallised . The groundmass minerals indicate the Na , K , Ca rich nature of the ...
... indicates intratelluric crys- tallisation of aegirine - augite apparently from an alkali rich mafic magma from which some nepheline also seems to have crystallised . The groundmass minerals indicate the Na , K , Ca rich nature of 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