Records of the Geological Survey of India, Volume 83

Andaman appears Assistant associated augite average bands bank basic beds biotite carried cent Circle clay close coal collected colour considered consist contain continued covered Cretaceous dam-site deep deposits depth detailed district drilling east Engineer examined feet field formation further Geol geological Geologist gneisses grains granite grey ground Hills inches India indicate joints lignite limestone located Lower Madras mapping massive material miles mineral Mining nearly Nummulites occur olivine places possible Pradesh present probably production proposed quantity quartz quartzites radiolarian cherts range region reported river road rocks samples sand sandstone sapphirine sediments shale sheet sheet 57 side soil stage stone strike suggested suitable supply surface Survey TABLE thickness thin tion tons trace trap types Upper valley varying veins village weathered zone