Lithology_code Lithology_Name DESCRIPTION PS Pisolitic Soil Pisolitic red-brown clay rich Regolith BS Black Soil Black-grey clay rich and silty soil SO Soil General non-differentiated soil WDO Weathered dolerite "Buff-Cream clay rich highly weathered dolerite, usually with fresh dolerite particles " FDO Fresh dolerite Grey fresh to slightly weathered dolerite WSS Weathered Sandstone Completely to moderately weathered sandstone BCSH Black Carbonaceous Shale Black carbon rich shale SL Siltstone Grey siltstone