The soil horizon that principally contains illuviation accumulations is designated the ________ horizon.
A)A
B)B
C)C
D)O
E)R

Question

Quizplus · Accepted Answer

The B horizon is characterized by illuviation accumulations, which means that materials have been transported from upper layers and deposited in the B horizon. This results in a distinct accumulation of minerals, organic matter, and other materials, and is characteristic of soils that have undergone significant weathering and erosion. The A horizon is characterized by organic matter accumulation and topsoil development, while the C horizon is the layer of soil that is relatively unaffected by biological processes and is composed mainly of weathered parent material. The O horizon is the layer of organic matter that is present in areas with a high level of vegetation and organic material, while the R horizon is the layer of bedrock that lies below all other soil horizons.

The Soil Horizon That Principally Contains Illuviation Accumulations Is Designated