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GEOLOGICAL SURVEY OF INDIA
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alignment Assistant associated bands basalt basin beds Block boreholes carried Circle clay coal coalfield collected completed comprises consists construction continued covered deposits depth detailed dips district dolomite drilling east examined exposed fault field folded formations foundation further Geol geological geological mapping Geologists gneiss grade granite grey groundwater hill holes India indicated investigation joints laterite length lignite limestone located Long Lower mapping Scale measurements meet metres mineralisation minerals observed occurs Office pegmatite period phyllite places Pleistocene Pradesh present Project proposed quartz quartzite range recommended recorded Regional reported river rocks samples sand sandstone Sarvashri schist seams shale sheet Shri soil stage strike structure suggested suitable surface Survey thickness thin tonnes Trap trend tubewells tunnel types Upper valley varies veins water supply weathered zone