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 17
... nature of the agglomeratic slates . Fig 1 shows the microscopic composition of compact massive bedded slate , Fig 2 of a rock similar to welded tuff ( Royd , 1961 ) and . Figs 3 , 4 and 5 of agglomerates with crystals of different ...
... nature of the agglomeratic slates . Fig 1 shows the microscopic composition of compact massive bedded slate , Fig 2 of a rock similar to welded tuff ( Royd , 1961 ) and . Figs 3 , 4 and 5 of agglomerates with crystals of different ...
Page 18
... nature . Greyish to blackish varieties have iron ore permeated glassy base , the greenish or greenish grey varieties are epidotised . Alternately zeolitic and non- zeolitic flows appear , the latter being harder than the former , which ...
... nature . Greyish to blackish varieties have iron ore permeated glassy base , the greenish or greenish grey varieties are epidotised . Alternately zeolitic and non- zeolitic flows appear , the latter being harder than the former , which ...
Page 21
... nature is due to intense chloritisation of the rocks . Porphyritic variety of the trap appears only as gradations and it is difficult to say if they are separate flows as well . The porphyritic crystals are of chalcedony , felspar and ...
... nature is due to intense chloritisation of the rocks . Porphyritic variety of the trap appears only as gradations and it is difficult to say if they are separate flows as well . The porphyritic crystals are of chalcedony , felspar and ...
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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Common terms and phrases
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