Records of the Geological Survey of India, Volume 99, Part 1

alignment Assistant associated Asstt bands Bihar boreholes carried Central Circle Office clay coal coalfield collected completed comprises consists construction continued covered deposits depth detailed district dolomite drilling eastern Engineer examined exploratory exposed fault field folds formations fossils foundation further Geol geological geological mapping Geologists gneiss grade granite grey groundwater Gupta hill holes India indicated joints Laboratory length limestone located Long Lower mapped scale meeting metres mineralisation minerals Nummulitic occur pegmatite period phyllite pits places Pradesh present Project proposed quartz quartzite Rajasthan ranging recommended Regional reported reserves river rocks samples sand sandstone Sarvashri schist seams selected Senior shale shear sheet Shri slate soil spillway strike structure suggested Superintending Survey thickness thin thrust tion tonnes trend tunnel types units Upper varying veins water supply West zone