. "duricrust"@en . . . "http://inspire.ec.europa.eu/codelist/LithologyValue/duricrust"^^ . . "duricrust"@en . . . . "2015-08-18 18:02 PM CEST"^^ . . . . "Rock forming a hard crust or layer at or near the Earth's surface at the time of formation, e.g. in the upper horizons of a soil, characterized by structures indicative of pedogenic origin."@en . . "Rock forming a hard crust or layer at or near the Earth's surface at the time of formation, e.g. in the upper horizons of a soil, characterized by structures indicative of pedogenic origin."@en . . .