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

alignment analysed Assistant associated bands bank Bihar block boreholes carried Central channel Circle clay coal collected comprising consisting construction continued copper covered deposits depth detailed dips district Division dolomite drilling Engineering examined exploration exploratory exposed extension fault field formation foundation Garhwal geological Geologist Geophysical gneisses grade granite groundwater Hills holes included India indicated investigations Laboratory length limestone located logging Long Lower major mapped material Meeting million tonnes mineralisation minerals Mining Nagpur Nummulitics observed occur officers pegmatites period phyllites places power house Pradesh presence Project proposed quartzites range recommended Region reported reserves river rocks samples sand sandstones Sarvashri scale schist seams shales sheet Shri spillway Srivastava stage strike structure studies suggested suitable Survey thickness tubewells tunnel unit Upper upto varying veins West zone