Records of the Geological Survey of India, Volume 101

alignment Assistant associated bands bank block boreholes carried Central Circle clay coal collected comprising consisting construction continued copper covered deposits depth detailed dips district Division dolomite drilling Engineering estimated examined exploration exploratory exposed extension fault field formation foundation geological Geologist Geophysics gneisses grade granite groundwater Headquarters holes included India indicated investigation Laboratories length limestone located logging Long Lower major mapped material Meeting million tonnes mineralisation minerals Mining Nagpur observed occur officers pegmatites period phyllites places power house Pradesh Project proposed quartzites Rajasthan ranging recommended Region reported reserves revealed river rocks samples sand sandstones Sarvashri scale schists seams shales sheet Shri spillway stage strike structure studies suggested suitable Superintending Survey thickness thin traps trending tubewells tunnel underlain unit Upper upto varying veins village zone