Bedrock

Definition

Bedrock is the solid rock layer beneath soil and regolith. It provides a stable foundation for soil development and influences soil characteristics through weathering processes.

5 Must Know Facts For Your Next Test

1. Bedrock undergoes physical and chemical weathering to form soil.
2. The composition of bedrock affects the mineral content of the overlying soil.
3. Roots of deep-rooted plants can sometimes reach down to the bedrock layer.
4. Bedrock can be classified into different types, such as igneous, metamorphic, or sedimentary rocks.
5. The depth at which bedrock is found can vary significantly depending on geographic location.

Review Questions

• How does bedrock contribute to soil formation?
• What are some factors that influence the mineral content of soil derived from bedrock?
• Why is the type of bedrock important in determining soil characteristics?

Related terms

Regolith: A layer of loose, heterogeneous material covering solid rock.

Weathering: The process that breaks down rocks into smaller particles, contributing to soil formation.

Soil Horizons: Distinct layers within a soil profile, each with different properties and compositions.