Metamorphic rocks are formed through the transformation of existing rock types, in a process called metamorphism, which means 'change in form'. This transformation occurs under conditions of high pressure and temperature, leading to physical and chemical changes in the rock's mineral composition and structure without the rock melting.

Metamorphic Rocks

Metamorphic rocks

transformation of existing rock types

process called metamorphism

change in form

high pressure and temperature

Physical changes in rocks

Chemical changes in rocks

rock's mineral composition

Rock structure

Rocks without melting

Classification and Characteristics of Rock Types

Relevant Degrees

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