Records of the Geological Survey of India, Volume 122, Part 2Government of India, 1989 - Geology Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 19
... Gneiss Further north in the same section streaky augen gneisses occurring at the base of Bomdila Group show 87 Sr / 86 Sr ratio between 0.958012 and 1.154021 . Sample No. Sample No. 87 Sr / 86Sr AR / 228 0.738918 AR / 226 0.738229 AR ...
... Gneiss Further north in the same section streaky augen gneisses occurring at the base of Bomdila Group show 87 Sr / 86 Sr ratio between 0.958012 and 1.154021 . Sample No. Sample No. 87 Sr / 86Sr AR / 228 0.738918 AR / 226 0.738229 AR ...
Page 29
... gneisses fall in the fields of tonalite to granite . The intrusive granitoids cover the fields of granodiorite , granite and quartz monzonite . Both Sukma granite gneisses and the migmatitic gneisses have variable major element ...
... gneisses fall in the fields of tonalite to granite . The intrusive granitoids cover the fields of granodiorite , granite and quartz monzonite . Both Sukma granite gneisses and the migmatitic gneisses have variable major element ...
Page 209
... gneisses contain fine fibrolite ( sillimanite ) needles . Bands of carbonate and calc - silicate rocks , and quartzite occur within the gneisses . The veins of tourmaline bearing pegmatite and granite intrude the rocks of Thimphu ...
... gneisses contain fine fibrolite ( sillimanite ) needles . Bands of carbonate and calc - silicate rocks , and quartzite occur within the gneisses . The veins of tourmaline bearing pegmatite and granite intrude the rocks of Thimphu ...
Contents
CENTRAL HEADQUARTERS 179 | 1 |
AIRBORNE MINERAL SURVEY AND EXPLORATION WING 80104 | 80 |
COAL WING 105 174 | 105 |
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aero-EM aeromagnetic amphibolite AMSE Wing analysis ANDHRA PRADESH anomalies assemblage bands Barakar Barakar Formation Barren Measures basin BIHAR block boreholes Calcutta carried clay coal seams Coal Wing COALFIELD Code copper cores correlation deposits depth developed DISTRICT Division drilling dykes eastern fault fossils geochemical geological mapping GEOLOGICAL PLAN Geophysics gneisses Gondwana grained granite gravity GROUND EVALUATION Group heavy minerals India indicated intersected isochron isotopic Kamthi Formation LANDSAT lignite limestone located Lower magnetic metamorphic MG Wing migmatites million tonnes mineralisation NW-SE occurs OME & MG Orissa Palaeontology and Stratigraphy pegmatite phyllite Precambrian programme quartz quartzite Rajmahal range Raniganj Raniganj Formation REGIONAL EXPLORATION rocks samples were collected sand sandstone scale schist seabed seam zones sections sector sedimentary sediments sequence shale shelf sillimanite Singhbhum sq km Stratigraphy strike length stromatolites sulphide surveys Talchir Formation thickness toposheet trending Upper upto valley varies veins vitrinite volcanics