eluviation

The removal of material from a soil layer is called eluviation.

They have subsurface horizon formation but show little eluviation and illuviation.

The master horizon, E, is used for subsurface horizons that have a significant loss of minerals (eluviation).

Eluviation occurs when precipitation exceeds evaporation.

The process of removal of materials from geological or soil horizons is called eluviation or leaching.

These sub-processes include mobilisation, eluviation and illuviation.

Mobilisation and eluviation both move organic materials and minerals through the A horizon into the B horizon.

A soil horizon formed due to eluviation is an eluvial zone or eluvial horizon.

Yet some sources consider the eluvial zone to be the A horizon plus the (distinct) E horizon, as eluviation technically occurs in both.

Podsolisation is an extreme form of leaching which causes the eluviation of iron and aluminium sesquioxides.

It is a mechanism of soil formation distinct from the soil forming process of eluviation, which is the loss of mineral and organic colloids.

In addition, the top facets lose materials such as mineral salts when these are washed out by rain (eluviation), while the bottom facets gain materials when these are washed in (illuviation).

A fallen tree will be more subject to the environment, because of uninhibited microbial colonization and attacks, as well as natural water leeching, the outer layers will decay and even faster when subjected to insects, resulting in eluviation.

During biostasy, abundant and regular precipitation induces strong pedogenesis characterized by chemical alteration of parent material and intensified eluviation and illuviation of soil minerals within the surface soil and subsoil layers (the solum).

In soil science, eluviation is the transport of soil material from upper layers of soil to lower levels by downward precipitation of water across soil horizons, and accumulation of this material (illuvial deposit) in lower levels is called illuviation.