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GEOLOGICAL SURVEY OF INDIA
GEOLOGY OF THE KURNOOL SYSTEM OF ROCKS
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appear Assistant average bands Banganapalle beds Bihar calcareous carried cent clay coal coalfield collected conglomerate contain continued covered Cuddapah deposits depth detailed direction district east eastern estimated examined exposed extending fault feet field formations fossils further Geol Geological Geologist gneisses Gondwana grade granite grey hill ilmenite important included India indications known Kurnool later lignite limestones localities Lower Madhya Madras mapping massive material measures miles mineral mines Nagpur nala Narji northern noted occur outcrop places portion Pradesh present probably production quartz quartzites Range recorded region reported reserves ridges river rocks samples sand sandstones seams seen shales sheet soil southern stage strike suggested surface Survey Survey of India System TABLE taluk thickness thin tons Type Upper Valley village Vindhyan western yield zone