Metamorphism of large areas of crust, usually during mountain building at convergent plate margins. Contrast with contact metamorphism.
Metamorphism affecting a large region that is associated with mountain building events.
The large scale regional alteration of pre-existing rocks under elevated temperatures and pressures resulting from burial in the earths crust. All of the Devonian rocks of south-west England underwent regional metamorphism during a mountain building event known as the Variscan Orogeny.
Dynamothermal metamorphism; metamorphism of a broad region, usually the result of deep burial during an orogeny.
Metamorphism on a large scale involving heat and pressure.