It is altered physically by pressure and heat and can align the existing minerals into layers or bands called foliations; new minerals may be formed from the ... wiki.answers.com |
•Metamorphic rocks take their name from the term metamorphism, meaning ... The term is used to describe all changes in mineral assemblage and rock texture that take place in rocks in the solid state. ... What happens during metamorphism ? www.uwgb.edu |
Metamorphic rocks are the third great class of rocks. These are what happens when sedimentary and igneous rocks become changed, or metamorphosed, ... geology.about.com |