Records of the Geological Survey of India, Volume 117, Issues 1-2Vols. 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 60
... basaltic lava flow can be classified into fine grained basalt & porphyritic basalt . Rhyolitic flows are - also locally present . The flows are gernerally sub- horizontal but at places trend in a NE - SW direction with 25 ° dips towards ...
... basaltic lava flow can be classified into fine grained basalt & porphyritic basalt . Rhyolitic flows are - also locally present . The flows are gernerally sub- horizontal but at places trend in a NE - SW direction with 25 ° dips towards ...
Page 94
... basalt flows of simple to compound ' pahoehoe ' type have been delineated . The basalts are nonporphyritic to porphyritic with giant size phenocrysts . The flows show dips of about 3 ° due NNE . In the area bounded by lat . 21 ° 30-21 ...
... basalt flows of simple to compound ' pahoehoe ' type have been delineated . The basalts are nonporphyritic to porphyritic with giant size phenocrysts . The flows show dips of about 3 ° due NNE . In the area bounded by lat . 21 ° 30-21 ...
Page 135
... basalt flows encountered between +5 m and -97 m MSL . Modal analyses of 26 basalt samples from UNGW - 1 and UNGW - 2 holes have been carried out which give the following range of mineralogi- cal composition : phenocrysts - plagioclase ...
... basalt flows encountered between +5 m and -97 m MSL . Modal analyses of 26 basalt samples from UNGW - 1 and UNGW - 2 holes have been carried out which give the following range of mineralogi- cal composition : phenocrysts - plagioclase ...
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Common terms and phrases
alignment amphibolite analysis Andhra Pradesh anomaly Asstt Attended bands basalt basin bed rock belt Bihar Bijawar biotite block boreholes Bundelkhand Calcutta carried Chakraborty charnockite collected conglomerate covering an area Deccan Trap depth dips Director district Division dolerite dykes exposed feldspar folds foliation Formation geochemical geological mapping Geologist Jr geophysical geotechnical Ghosh glacier gneiss Gneissic Complex Gondwana grade grained granite granite gneiss granitoid Gupta Headquarters Hydel Project Hyderabad indicated iron-formation Jaipur Kumar limestone line km located logging Lucknow magnetite mapped an area massif metamorphism mica microcline migmatites mineral mineralisation Nagpur nala NE-SW NW-SE pegmatites phyllites plagioclase plutons porphyritic power house quartz quartz veins quartzite regional river rock types S/shri samples sandstone scale schist sediments shale Sharma shear Shillong Shillong Group Shri Singh slide slope spillway sq km Srivastava strike length studies surface surveys thick tion tonnes toposheet trending tunnel upto zone