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GCSE Geography · key term
Rock changed by heat and pressure without melting.
Used by Edexcel
Specification 1.1 · Paper 1
Revise: Geological Variations in the UKMetamorphic rocks form when existing rocks experience heat and pressure without melting. The original rock changes into a harder, more compact rock.
Paper 2
Rock changed from an existing rock by heat and pressure without melting.
Metamorphic rocks form through heat and pressure without melting. Rock that melts and then cools forms igneous rock.
Metamorphic rocks change through heat and pressure without melting; igneous rocks form when molten rock cools and solidifies.
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Metamorphic rocks form when existing rocks are changed by heat and pressure without melting. The original rock becomes harder and more compact. For example, shale can become slate, and further metamorphism can produce schist.