Here's how:
* C horizon: This is the parent material from which the soil is formed. It can be bedrock, glacial till, or other geological deposits. It is relatively unaltered by biological and chemical processes.
* R horizon: This is the unweathered bedrock that lies beneath the C horizon. It is the source of the C horizon material.
The C horizon is transitional between the unaltered bedrock (R horizon) and the overlying horizons that have undergone more significant weathering and development (A, B, and O horizons).
The C horizon is essentially the R horizon that has begun to break down and weather. This process of weathering creates the minerals and other materials that will eventually form the soil's structure.
In summary:
* The R horizon is the source of the C horizon material.
* The C horizon is the transitional stage between bedrock and the more developed soil horizons.
* The C horizon is influenced by the R horizon in terms of its composition and properties.
Understanding the relationship between the C and R horizons is essential for comprehending how soils form and how their properties vary.
