Answer:
Metamorphic rocks
Explanation:
A metamorphic rock is a rock that forms when a rock is changed by heat, pressure or chemical reactions.
A metamorphic rock is often called a changed rock.
- Exposure of a rock into conditions of high temperature and pressure causes changes to the rock.
- There is intensive mineralogical changes occurring also being driven by presence of fluids.
- Metamorphic rocks often forms in the subsurface when a rock becomes buried.
- Surface activities such as volcanic eruptions and impact of a bollide on earth can also cause the formation of these rocks.
- They can form from both igneous and sedimentary rocks
