Records of the Geological Survey of India, Volume 107Geological Survey of India, 1972 - 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
On studies of the Agglomeratic Slate and Panjal Trap in the Jhelum | 12 |
Chandranath granite Goa by A R Gokul and M D Srinivasan | 46 |
PlioPleistocene boundary in sediments of the Indian SubContinentby | 54 |
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acid agglomeratic slates amphibolite Archaean Ashtamudi assemblage Bababudan Group bands Barakar basalts basin beds Bihar biotite Boulder Conglomerate calcareous chelonian Chitradurga Chitradurga Group chlorite clays Coalfield craton Cuddapah deposits Dharwar east eastern epidote facies felspar folds fossil galena Geoclemys Geol GEOLOGICAL SURVEY Glossopteris Glossopteris flora gneisses gneissic complex Gondwana grained granite greenish grey greenstone belts hamiltoni Gray high grade schists Hills Ibid INDIA Records indicated Karnataka Kashmir Kolar Kurnool lake laterite lead isotopic limestone lithological Lower Gondwana Masumpur metamorphism metres mineralisation minerals non-porphyritic occur overlying Palaeobotanist Panjal trap phyllite Pichamuthu Pinjor Plate Plateau Pleistocene Pliocene porphyritic Precambrian quartz quartzite Quilon Raniganj Sargur Supergroup schist schist belts schistose schistose rocks sediments sequence shales Siwalik stratigraphic Supergroup Surv SURVEY OF INDIA Sylhet Talchir Tatrot tectonic Tertiary thickness unconformity Upper upto Vindhyan volcanic Warkallis Western Block Zawar zeolite zone