Records of the Geological Survey of India, Volume 97

affected Alwar analysis appears basalt beds belt bodies borehole brown building Calcutta caused central clay coal coast collected common cracks crater Dalings damage Damudas Darjeeling depression depth Description developed direction district dykes earthquake east eastern Eocene evidence extends Fault felt field folds formation G. S. I. Type Geol GEOLOGICAL SURVEY grains hills houses important indicate Jour kankar known lake later less light Locality Lonar lower magma material measuring meteorite Middle mineral minor nature observed occurs origin patches pegmatites places PLATE Pleistocene polarised present quantity quartz Rajasthan range recent Record reported rocks rounded Sagar Island saline sample sand sediments shocks side sodium Specimen stage structure surface Surv SURVEY OF INDIA Tamluk thickness thin Thrust tonnes trap units upper valley walls yield zone