English to Swedish Science Geology

Förekommer i EU-text om skyddad geografisk beteckning för en viss sorts kål. Markförhållandena i odlingsområdet beskrivs:

"The unique soil structure of the ... plateau, consisting of the thick ... loam topsoil, a mixture of loess, loess loam and weathered loam from the black Jura beta formations, together with an abundant nutrient supply and a constantly high moisture content and its special microclimate, provide excellent growing conditions for ... "

loess = lössjord
loam = siltjord

Men loess loam??