Dictionary of Geotourism

2020 Edition
| Editors: Anze Chen, Young Ng, Erkuang Zhang, Mingzhong Tian

Ultra-High-Pressure Metamorphism

Reference work entry
DOI: https://doi.org/10.1007/978-981-13-2538-0_2632

Ultra-high-pressure metamorphism is the metamorphism that takes place under super-high-pressure conditions. It is characterized by the formation of eclogite, jadeite quartzite and aragonitic marble with ultra-high-pressure metamorphic minerals such as coesite and diamond. These ultra-high-pressure minerals are generally believed to form at pressures of 2.5–3.5 GPa and at depths of approximately 80–120 km. Their exposure at the surface is a result of delamination and uplift.

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