What is bedrock structure in earth science?

Bedrock is consolidated rock, meaning it is solid and tightly bound. Overlying material is often unconsolidated rock, which is made up of loose particles. Bedrock can extend hundreds of meters below the surface of the Earth, toward the base of Earth's crust. The upper boundary of bedrock is called its rockhead.

Bedrock is made up of solid rock.

Explanation:

Bedrock, deposit of solid rock that is typically buried beneath soil and other broken or unconsolidated material (regolith).