ILLUVIATION


Meaning of ILLUVIATION in English

Accumulation of dissolved or suspended soil materials in one area or layer as a result of leaching (percolation) from another.

Usually clay , iron, or humus wash out and form a line with a different consistency and color. These lines are important for studying the composition and ages of rock strata.

Britannica Concise Encyclopedia.      Краткая энциклопедия Британика.