Amphibolite facies is a set of metamorphic mineral assemblages formed under medium to high temperatures and pressures, typically associated with regional metamorphism. It is characterized by the presence of amphibole and plagioclase minerals, indicating specific conditions of metamorphic transformation in the Earth's crust.

Amphibolite Facies

Metamorphic mineral assemblages

Medium to high temperatures

High Pressures

Regional metamorphism is a geological process that occurs over large areas of the Earth's crust, typically associated with mountain building, where rocks undergo transformation due to high temperatures and pressures. This process results in the recrystallization of minerals, forming metamorphic rocks with distinct textures and mineral assemblages that reflect the conditions of their formation.

Regional Metamorphism

Presence of amphibole

Presence of plagioclase minerals

Metamorphic transformation

The Earth's crust is the outermost solid shell of our planet, composed of a variety of rocks and minerals, and is the thinnest of Earth's layers. It is divided into continental and oceanic types, with the former being thicker and less dense, while the latter is thinner and denser, playing a crucial role in tectonic activity and the formation of geological features.

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