Asked in GeologyRocks and MineralsQuartz
How do metamorphic differ from sedimentary and igneous?
February 06, 2011 4:43PM
Metamorphic rock is igneous, sedimentary, or other metamorphic rock that has undergone a change due to heat and/or pressure. The change could be an alteration in mineralogy, a physical restructuring of existing minerals, or a recrystallization of existing minerals--giving the metamorphic rock a new set of characteristics which indicate that change.