Records of the Geological Survey of India, Volume 101, Part 1

alignment analysed Assistant associated bands block boreholes carried Central Circle clay coal collected completed comprising consisting construction continued copper covered deposits depth detailed dips district Division dolomite drilling Engineering examined exploration exploratory exposed fault field formation forms fossils foundation Garhwal geological Geologist Geophysics gneisses grade granite groundwater Headquarters held holes included India indicated investigations Laboratory length limestone located logging Long Lower major mapped material Meeting mineralisation minerals Mining Nagpur Nummulites observed occur officers period phosphorite phyllites places power house Pradesh prepared present Project proposed quartzites Rajasthan range recommended Region reported reserves river rocks samples sand sandstones Sarvashri scale schists seams sericite shales sheet Shri spillway Srivastava stage strike structure studies suggested Superintending Survey thickness tubewells tunnel unit Upper upto varying veins West yield zone