Records of the Geological Survey of India, Volume 92The Survey, 1962 - Earthquakes Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 11
... granite . The most common rocks are granites and gneisses . Biotite gneiss is the oldest rock ; it is composed of microcline , perthite and some plagioclase with quartz , biotite , sphene and apatite . It is a finely foliated rock which ...
... granite . The most common rocks are granites and gneisses . Biotite gneiss is the oldest rock ; it is composed of microcline , perthite and some plagioclase with quartz , biotite , sphene and apatite . It is a finely foliated rock which ...
Page 20
... granite gneiss with basic inclusions and acid veins in them . The two groups are separated by an eruptive unconformity . A few basic dykes met with in the area appear to be younger to the schists and gneiss . The older formations , the ...
... granite gneiss with basic inclusions and acid veins in them . The two groups are separated by an eruptive unconformity . A few basic dykes met with in the area appear to be younger to the schists and gneiss . The older formations , the ...
Page 21
... granite . The most common rocks are granites and gneisses . Biotite gneiss is the oldest rock ; it is composed of microcline , perthite and some plagioclase with quartz , biotite , sphene and apatite . It is a finely foliated rock which ...
... granite . The most common rocks are granites and gneisses . Biotite gneiss is the oldest rock ; it is composed of microcline , perthite and some plagioclase with quartz , biotite , sphene and apatite . It is a finely foliated rock which ...
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44th Ind alluvium altitude Andhra aquifer Archaean B.Sc Banaras banded hematite-quartzite basin beds belt Bihar block Bombay boreholes Calcutta Circle clay coal seams colour Congr Cuddapah deposits depth DISTRICT Shri East Economic Geology electrical logging epeirogeny examined ferruginous foliation foraminifera formations fossils furlongs G.S.I. bench-mark G.S.I. Type gallons U.S. Geol geological mapping Geological Survey Geologist gneisses Gondwana granite groundwater Hamzah Headquarters Cal hematite India Industr investigated iron-ore Karanpura coalfield laterite lignite limestones Located lodes m.s.l. Drilled M.Sc Madhya Pradesh Madras magnetite miles mineral mineralisation Murthy Mysore Neyveli occur Orissa Pradesh.-Shri Proc psilomelane Punjab quarry quartz quartzites Rajasthan Ratanpur reported river rock types samples sand sandstones Sarvashri schists Section sediments shales Shri M. S. Sinha specimens Srivastava structure Surv Survey of India Talchir taluk thickness topo-sheets total dissolved solids veins village West Bengal zone