A 'soft-rock' petroleum-type approach to exploration for 'hard-rock' minerals in sedimentary basins D. Taylor I. Introduction Several major groups of ore deposits are found as tabular, stratiform bodies or as cross cutting but essentially stratabound deposits within sedimentary basins. Important exam ples are oxide and carbonate ores of iron and manganese, copper and zinc-lead sulphides and gold-uranium deposits. Where the host basins have been strongly in verted and deeply eroded and the mineralized horizons brought to outcrop, the laterally extensive nature of the mineralization usually...