Records of the Geological Survey of India, Volume 87, Part 1 - Volume 88, Part 1The Survey, 1958 - Earthquakes |
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Page 13
... occur often infolded with mica - schists and sometimes grade into marble and hornblende - schists . They usually contain diopside , actinolite , biotite , calcite and microcline . Within the calc - gneisses occur two narrow bands of ...
... occur often infolded with mica - schists and sometimes grade into marble and hornblende - schists . They usually contain diopside , actinolite , biotite , calcite and microcline . Within the calc - gneisses occur two narrow bands of ...
Page 14
... occur as thin lenticular bands within calc - gneisses and hornblende - schists . They are pale green on fresh surfaces due to the presence of minor amounts of diopside and brown on weathered surfaces . Younger granites and gneisses occur ...
... occur as thin lenticular bands within calc - gneisses and hornblende - schists . They are pale green on fresh surfaces due to the presence of minor amounts of diopside and brown on weathered surfaces . Younger granites and gneisses occur ...
Page 36
... occur chiefly on the main Parasnath massif . The acidic gneisses occur widely in the western part with frequent inclusions of amphibolites etc. Patches of coarse - texture , banded gneisses occur in the south - western part of the area ...
... occur chiefly on the main Parasnath massif . The acidic gneisses occur widely in the western part with frequent inclusions of amphibolites etc. Patches of coarse - texture , banded gneisses occur in the south - western part of the area ...
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Common terms and phrases
40th Indian Sci abutment alignment alluvium amphibolites ANON ANON ANON Archaean Assistant Geologist B. C. Roy bands Barakar belt Bihar Bijapur district biotite biotite-schists Bombay bore-holes boulders charnockites Circle clay coal seams coalfield conglomerate Cuddapah dam-site Deccan Trap deposits depth dolerite dolomite drilling Dutt east eastern examined exposed feet thick felspathic ferruginous folded foliation formations fossils furlongs Geological Survey Ghosh gneisses Gondwana grade granite gneiss grey Hazaribagh district hill hornblende hornblende-schists inches India intrusive investigated Kaladgi Khola Kutch laterite lignite limestone Madhya Madras manganese manganese-ore Messrs mica mica-schists mineral mining nala occur outcrops pegmatites phyllites pits portion Pradesh Proc quarries quartz quartz veins quartzites Rajasthan reports the occurrence ridge right bank river bed rock types samples sand sandstones Saurashtra schists shales Siwaliks soil square miles strike systematic mapping taluk Tertiary thin tons topo tube-wells Upper valley zone