Records of the Geological Survey of India, Volume 113, Parts 4-6The Survey, 1980 - Earthquakes Vols. 1- include Report of the Geological Survey, 1867- ; v. 32- include Review of the mineral production of India, 1898/1903- ; v. 75 consists of Professional papers, no. 1-16; v. 76 consists of Bulletins of economic minerals. |
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Page 34
... tuff . The youngest rocks exposed on the island are hyalopilitic basalts which form the hard capping of the western ridge ( Sukheswala and Poldervaart , 1958 ) . Raman ( 1979 ) gives the following geological succession for the Bombay ...
... tuff . The youngest rocks exposed on the island are hyalopilitic basalts which form the hard capping of the western ridge ( Sukheswala and Poldervaart , 1958 ) . Raman ( 1979 ) gives the following geological succession for the Bombay ...
Page 43
... tuffs generally contain fragments of different types , however , depending on the nature of dominant fragmentary material , they have been designated as crystal tuff , lithic tuff , vitric tuff etc. A normal tuffaceous rock , commonly ...
... tuffs generally contain fragments of different types , however , depending on the nature of dominant fragmentary material , they have been designated as crystal tuff , lithic tuff , vitric tuff etc. A normal tuffaceous rock , commonly ...
Page 47
... tuff . Note flattened vesicles , due to impact , in glass fragments . Parallel nicols - X 30 Fig . 13 Volcanoclastic sandstone showing subangular to subrounded lithic. Fig . 11 - Vitric tuff showing drawn - out tubular vesicles ...
... tuff . Note flattened vesicles , due to impact , in glass fragments . Parallel nicols - X 30 Fig . 13 Volcanoclastic sandstone showing subangular to subrounded lithic. Fig . 11 - Vitric tuff showing drawn - out tubular vesicles ...
Contents
Part | 1 |
Problems of correlation of PreGondwana rock units of Arunachal Pradesh and adjoining areasa review | 15 |
The Sung Valley alkaline ultramafic carbonatite complex East Khasi and Jaintia Hills districts Meghalaya | 24 |
Copyright | |
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Common terms and phrases
alluvium anorthosite assemblage associated augite bands basalt flows basin beds belt biotite Bombay bore holes borehole calcite carbonatite Charnockite chert chlorite chromite clay clinopyroxene coal complex Deccan Trap deposits developed district drainage dykes emplaced fault felspar fluorite folds Formation fossil fragments gabbro geochemical Geol Geological Survey geomorphic gneisses Gondwana grade grains granite granulites greisens grey groundmass Group hill Himalayas ijolite indicated intrusive laterite layers limestone magnetite Manipur mapping Meghalaya metamorphic metres migmatites mineralisation minerals Narmada occur olivine opaque ophiolite phenocrysts phosphorite phyllite plagioclase Plate porphyritic Pradesh present pyroclastic pyroxene pyroxenite quartz quartz veins quartzite region river rocks samples sandstone schist seam sedimentary sediments sequence serpentinite shale sillimanite soil stratigraphic structure studies sub-surface surface Surv Survey of India Tapti tectonic thickness thin tion trending tuff ultramafic Unpublished GSI Report upto Vaghur valley volcanic zone