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contact metamorphism

noun, Geology
localized metamorphism resulting from the heat of an igneous intrusion.
Origin of contact metamorphism
1875-80 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for contact metamorphism
  • Another type of metamorphism, contact metamorphism, occurs when hot igneous rock intrudes into some pre-existing rock.
  • contact metamorphism is a result of heat generated from a nearby magma source.
  • Two of the common types are: regional metamorphism and contact metamorphism.
  • contact metamorphism, which occurs when a body of magma intrudes into existing rock, also forms ores.
  • contact metamorphism around intrusions produced epidote hornfels and locally, amphibole hornfels.
  • He also described several areas of contact metamorphism.
  • They are intruded by granitic and basic igneous rocks which have caused contact metamorphism.
  • Some were resorbed, but others were baked and cooked in a process called contact metamorphism.
  • The alteration of rock by heat and fluids derived from an igneous intrusion is called contact metamorphism.
contact metamorphism in Science
contact metamorphism  
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. See also aureole. Compare regional metamorphism.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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