Records of the Geological Survey of India, Volume 107Geological Survey of India, 1976 - 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 25
... basalts , aplite , andesite , dacite , rhyolite etc. Glass forms the common matrix and may be clear , with gas ... Basalts The basalts are light to dark grey or persistently greenish , when altered . These are the most common rock types ...
... basalts , aplite , andesite , dacite , rhyolite etc. Glass forms the common matrix and may be clear , with gas ... Basalts The basalts are light to dark grey or persistently greenish , when altered . These are the most common rock types ...
Page 26
... basalts are holocrystalline , extremely fine grained ( Pl 10 , Fig 1 ; Pl 11 , Figs 4 , 6 ) , and their average grain size is 0. 10 mm . The lower part of the flow layer is however coarse ( Pl 10 , Fig 3 ) . The minerals are set in a ...
... basalts are holocrystalline , extremely fine grained ( Pl 10 , Fig 1 ; Pl 11 , Figs 4 , 6 ) , and their average grain size is 0. 10 mm . The lower part of the flow layer is however coarse ( Pl 10 , Fig 3 ) . The minerals are set in a ...
Page 28
... been produced by processes resulting from the mingling of liquid basalt and rhyolite . Alternate eruptions of basalts and rhyolites seem to have taken place at closer intervals or alternatively , rhyolites and basalts got mixed up 28.
... been produced by processes resulting from the mingling of liquid basalt and rhyolite . Alternate eruptions of basalts and rhyolites seem to have taken place at closer intervals or alternatively , rhyolites and basalts got mixed up 28.
Contents
RECORDS | 2 |
A note on the polymetallic sulphide mineralisation in Askot area | 8 |
On studies of the Agglomeratic Slate and Panjal Trap in the Jhelum | 12 |
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acidic agglomeratic slates amphibolite Archaean assemblage Bababudan Group bands Barakar basalts beds Bihar biotite Boulder Conglomerate calcareous Chitradurga chlorite clays correlation craton Cuddapah deposits Dharwar district east epidote facies felspar flora of India folds formation fossil galena Garo Hills Geoclemys Geol Geological Survey Glossopteris Glossopteris flora gneiss gneissic complex Gondwana grained greenish grey greenstone belts greyish high grade schists Ibid indicated isotopic Jour Karharbari Kashmir Kurnool laterite limestone Lower Gondwana Lower Karewas metamorphism metres mineralisation minerals Mysore non-porphyritic occur outcrops overlying Palaeobotanist Panchet Panjal trap phenocrysts Pinjor Plate Pleistocene Pliocene porphyritic Precambrian pyroxene quartz quartzite Raniganj rock types Sargur schist schist belts schistose schistose rocks sediments sequence shale Siwalik stratigraphic Supergroup Surv Survey of India Sylhet Sylhet Limestone Sylhet Sandstone Talchir Tatrot tectonic Tertiary thick unconformity Upper upto valley veins Vindhyan volcanic Western Block zeolite zone