Records of the Geological Survey of India, Volume 87, Part 1

alluvium ANON appear Assistant associated bands bank belt Bihar carried Circle clay coal coalfield collected consisting contain continued covered deposits depth detailed direction district drilling dykes east eastern examined exposed extending feet field folded formations further geological Geologist gneisses Gondwana grade granite half headquarters hill holes included Indian joints laterite lignite limestone localities located Lower Madras manganese mapping March material miles mineral mining Nagpur nala northern noted noticed November occur pegmatites phyllites pits places portion present quarries quartz quartzites ranges records reports reserves Returned ridge river road rocks samples sand sandstones schists seam seen shales sheet slope soil strike suggested surface Survey systematic taluk thickness thin tons trap types Upper valley varying veins village visited western wide yield zone