tampon translations: tampon. Learn more in the Cambridge English-French Dictionary.
Metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). The change occurs primarily due to heat, pressure, and the introduction of chemically active fluids.etamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). The change occurs primarily due to heat, pressure, and the introduction of chemically active fluids.
Basics -- Metamorphic Rocks. 1  Introduction. 2  Factors that control metamorphism Chemical composition of the protolith. Temperature. 3  Grades of metamorphism. 4  Types of metamorphism Contact metamorphism. Regional metamorphism. 5  Index minerals. 6  Metamorphic facies. 7  Protoliths. 8  Types of metamorphic rocks.