What rock makes up upland areas?
Igneous and metamorphic.
What rock makes up lowland areas?
Sedimentary.
What are the main sedimentary rock types?
Chalk, carboniferous limestone and clay.
What is the main igneous rock type?
Graphite.
What are the maim metamorphic rock types?
Schists and slates.
What are igneous rock types like?
Mostly resistant to erosion.
What are sedimentary rock types like?
Some are resistant but some crumble easily.
What are metamorphic rock types like?
Hard and resistant.
What height of rocks are younger?
Lower.