metasomatic metamorphism

Assorted References

• definition ( in metamorphism (geology) )

  Other types of metamorphism can occur. They are retrograde metamorphism, the response of mineral assemblages to decreasing temperature and pressure; metasomatism, the metamorphism that includes the addition or subtraction of components from the original assemblage; poly-metamorphism, the effect of more than one metamorphic event; and hydrothermal metamorphism, the changes that occur in the...

• metamorphic process ( in metamorphic rock: Thermodynamics of metamorphic assemblages )

  ...But occasionally, particularly during contact metamorphism, diffusion may occur across a boundary of chemical dissimilarity, leading to rocks of unique composition. This process is referred to as metasomatism. If a granite is emplaced into a limestone, the contact region may be flooded with silica and other components, leading to the formation of a metasomatic rock. Often such contacts are...