Here's why:
* Residual soils form in place, meaning they are derived from the weathering of the underlying bedrock. The process of weathering breaks down the rock into smaller particles, creating the soil.
* Parent material: The bedrock is the parent material for residual soils. The soil's composition and characteristics are largely determined by the type of bedrock it originated from.
* Example: If the bedrock is granite, the resulting residual soil will likely be sandy and acidic.
Important Note: Residual soils are often thin and can vary significantly in depth depending on the bedrock's resistance to weathering and the length of time it has been exposed to weathering processes.
