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.
Metamorphic Rocks. This rock type is formed when igneous and sedimentary rocks in the various layers of the crust undergo changes as a result of a change in temperature and pressure conditions. Typical metamorphic minerals are garnet, andalusite, kyanite, sillimanite, iolite, epidote etc.