Heat and/or pressure will cause the elements in the original rock to react and re-form. Metamorphic rocks are highly resistant to erosion and are often used in building materials.

Metamorphic rocks are also formed because of change in ... process of rock transformation is called the rock cycle. It was used to build the Mourne Wall between 1904 and 1922, which was ...

detailing igneous, sedimentary and metamorphic rocks This is followed by a glossary of geological terms that are used in the text.