Which horizon is elevated material that has leached through the A horizon?

The elevated material that has leached through the A horizon is found in the B horizon, which is often referred to as the illuviation layer. In this horizon, materials such as nutrients and minerals that have moved downward from the A horizon accumulate. This process, known as illuviation, results in the B horizon containing a higher concentration of clay, minerals, and organic matter that has percolated down from the upper layers of soil.

The distinction between the horizons is important for understanding soil composition and health. The A horizon, or topsoil, is rich in organic matter and is crucial for plant growth. In contrast, the B horizon plays a vital role in nutrient storage and water retention, benefiting the overall ecosystem and agricultural productivity. The other horizons mentioned do not specifically represent the accumulation of leached materials as clearly as the B horizon, highlighting its unique role in soil dynamics.