Eluviation vs. Illuviation
Eluviationnoun
The sideways or downward movement of dissolved or suspended material within soil caused by rainfall
Eluviationnoun
Creation of geological deposits (eluvial deposits) by in situ weathering or weathering plus gravitational movement or accumulation.
Illuviationnoun
(geology) The accumulation of suspended material and soluble compounds leached from an overlying stratum
