With the exception, perhaps, of the tract of country lying at the base of the Himalaya Mountains known as the Terai, or the special region of malaria, the most unhealthy part of Bengal is the triangular piece of country which lies in the hollow, which is bounded by the high banks of the Rivers Ganges and Madhimati on the north and east, the elevated laterite soil districts of the Sonthal Pargan...

koopan regional laterites located in north east of shiraz, fars province.the rock strata, koopan laterits set on neyriz ophiolites that these ophiolites are actually part of a series zagros ophiolite with of upper cretaceous age. these laterites are covered with nummulitic limestone equivalent jahrom formation with eocene age. the lateritization should be occurred after the upper cretaceous in ...