Answer:
The rock of the Great Plains is called sedimentary rock and the rock of the Rocky Mountains is called a igneous rock. A Sedimentary rock: is a type of rock that is formed by the buildup of mineral/organic particles at Earth's surface. And an Igneous rock: a type of rock that forms when magma (molten rock) cools/crystallizes. Since they formed in different ways they must not have formed together. Rocks can form in different ways, shapes sizes etc.. This causes them to be different types.
Explanation:
1) Sedimentary rock: type of rock that is formed by the accumulation or buildup of mineral or organic particles at Earth's surface.
2) Igneous rock: type of rock that forms when magma (molten rock) cools and crystallizes.
