Noun
rock altered by pressure and heat
Source: WordNetDuring periods of submersion, thick layers of limestone were laid down over the old igneous and metamorphic rock. Source: Internet
Flake graphite is less common and of higher quality than amorphous; it occurs as separate plates that crystallized in metamorphic rock. Source: Internet
Once a metamorphic rock is melted it is no longer a metamorphic rock and is a magma, so these rocks are seen as a transitional between the two, but are not technically granite as they do not actually intrude into other rocks. Source: Internet
The combination of river and glacier erosion exposed the uppermost portions of the plutons emplaced millions of years before, leaving only a remnant of metamorphic rock on top of some Sierra peaks. Source: Internet
In this part of the country, the old metamorphic rock reveals itself through the surrounding limestone. Source: Internet
Sedimentary rock may also be re-eroded and redeposited, and metamorphic rock may also undergo additional metamorphism. Source: Internet