. "Metamorphic rock"@en . . . "Metamorphic rock - In the Rock Classification Scheme, this high level class includes metasedimentary rock, metavolcaniclastic rock, meta-igneous rock, metamorphic rock with unknown protolith, mechanically broken and reconstituted rock, metasomatic-rock and hydrothermal-rock. Metamorphism encompasses all the solid state changes that occur between the upper and lower limits of metamorphism. Major changes in bulk composition are referred to as metasomatism. British Geological Survey Research Report RR/99/02, section 1 and fig. 1."@en . . . . . . "Metamorphic rock"@en . . . . . . . "stable"@en . "+#MET"@en .