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.
Types of Metamorphism. Different types of metamorphism are displayed in the plot above: Contact Metamorphism - reactions driven primarily by temperature at relatively low pressures - associated with the injection or extrusion of a magma or a lava. Dynamic Metamorphism - reactions driven primarily by pressure at relatively low temperatures.