Records of the Geological Survey of India, Volume 92

alluvium Andhra appears aquifer Assistant associated banded basin beds belt Bengal Bihar block body Bombay boreholes carried Circle clay coal seams coalfield collected consist contain continued covered deposits depth detailed direction district drilling east Economic electrical logging ending examined faults feet field folded formation further Geol geological Geological Survey Geologist gneisses grains granite groundwater hills included India indicate Industr iron iron-ore lignite limestones Located lower M.Sc Madhya Pradesh Madras mainly mapping material miles mineral mining nature Nummulitic observed occur Orissa places Pleistocene possible present quartz quartzites recorded region reported resistivity river road rocks samples sand sandstones scale schists sediments seen sericite shales Shri strike structure suggested surface thickness types Upper varies veins village zone