Records of the Geological Survey of India, Volume 129, Parts 2-3
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Central Petrological Laboratories
Geodata and Database Division
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analysis anomaly associated bands Barakar base basic basin bearing belt Bihar block bodies boreholes carried Central clay coal coal seams Coalfield Code collected Complex continued core course covered deposits depth detailed Director district Division drilling east eastern exploration exposed extending faults field field season fold Formation GEOLOGICAL MAP geophysical geotechnical gneiss gold grade grained granite grey ground Group identified India indicated interpreted intersected land lignite limestone lineament located Lower magnetic major Measure medium mineralisation minerals northern occur Orissa OVERVIEW phyllite potential present programme Project quartz quartzite range regional represented river rocks samples sand sandstone scale schist sector sediments sequence shale shear shows Singhbhum soil southern strike structural surface survey taken thickness tion trending types unit upto values varies veins volcanics West Bengal western zone