contact metamorphism
Magma-induced rock alteration
Contact metamorphism is the transformation of rock by heat from nearby molten magma or lava.
Unlike regional metamorphism, which occurs over vast areas under tectonic pressure, contact metamorphism affects a limited zone around the intrusion: The limestone showed contact metamorphism where the granite had intruded.
The affected area is called a contact aureole.
Radiant ring around head
- country rockRural-electric musical fusion
- magmaMolten rock underground
- plutonSubterranean cooled magma body
- graniteIgneous rock, quartz-rich
intrusion · dike · sill · batholith · stock · igneous · baking · margin
Purification through dissolving and reforming
- bakingCooking with dry heat
- partial meltingIncomplete transition to liquid
- decarbonationRemoval of dissolved CO2
- dehydrationExcessive fluid loss
Blue magnesium-iron aluminosilicate mineral
- garnetRed semiprecious stone
- hornblendeCalcium-iron amphibole mineral
- biotiteIron-rich layered silicate
- corundumCrystalline aluminum oxide
aureole
Radiant ring around head
- country rockRural-electric musical fusion
- magmaMolten rock underground
- plutonSubterranean cooled magma body
granite · intrusion · dike · sill · batholith · stock · igneous · baking · margin · emplacement
aureole
Radiant ring around head
- concentricSharing one center
- faciesDiagnostic facial appearance
marble
Recrystallized limestone rock
- quartziteMetamorphic silica-rich stone
recrystallization
Purification through dissolving and reforming
- bakingCooking with dry heat
- partial meltingIncomplete transition to liquid
- decarbonationRemoval of dissolved CO2
dehydration · prograde · retrograde · nucleation · diffusion
cordierite
Blue magnesium-iron aluminosilicate mineral
- garnetRed semiprecious stone
- hornblendeCalcium-iron amphibole mineral
- biotiteIron-rich layered silicate
- gemstone formationcrystallization, heat, pressure, crystal growth, nucleation
- rock processesmineralization, albitization, recrystallization, replacement, crystallization
- Volcanismmagma, eruption, lava flow, volcanic eruption, magma chamber
- Metamorphic Rocksschist, gneiss, marble, slate, quartzite
- ore depositslode, mineral deposits, vein, motherlode, gold deposits
- rock formationcrystallization, solidification, cooling, compaction, cementation
contact, contactless, contacts, contacted, contacting, metamorphosis, metamorphose, contactable, metamorphic