contact metamorphism

noun

, Geology.

1. localized metamorphism resulting from the heat of an igneous intrusion.

contact metamorphism

1. A type of metamorphism in which the mineralogy and texture of a body of rock are changed by exposure to the pressure and extreme temperature associated with a body of intruding magma. Contact metamorphism often results in the formation of valuable minerals, such as garnet and emery, through the interaction of the hot magma with adjacent rock.
2. See also aureoleCompare regional metamorphism

Word History and Origins

Origin of contact metamorphism¹

First recorded in 1875–80

Example Sentences

The heat of an intruded magma affects the rocks it traverses and produces what is termed contact metamorphism.

From Project Gutenberg

In contact metamorphism, thin sheets of molten rock produce less effect than thicker ones.

From Project Gutenberg

Lapis lazuli usually occurs in crystalline limestone, and seems to be a product of contact metamorphism.

From Project Gutenberg

Contact metamorphism, on the other hand, may develop valuable mineral deposits (see pp. 20, 45-46).

From Project Gutenberg

Hence it is that the subject of contact metamorphism is of interest to economic geologists.

From Project Gutenberg