| 释义 |
illuvium
illuviumthe material accumulated through soil that has been leached out of another layer of soil
Not to be confused with:alluvion – overflow; floodalluvium – a deposit of sand, mud, silt, or gravel formed by flowingeluvium – a deposit of soil, dust, or rock debris formed by the decomposition of rockilluvium (ɪˈluːvɪəm) n (Geological Science) geology a material, which includes colloids and mineral salts, that is washed down from one layer of soil to a lower layerIlluvium
illuvium[i′lü·vē·əm] (geology) Material leached by chemical or other processes from one soil horizon and deposited in another. Illuvium mineral and organic substances leached by rainwater from the upper part of the soil and deposited in its lower parts (the illuvial horizon). Depending on the type of soil, illuvium may consist of humus, iron hydroxides, carbonate, or gypsum. |