Volatiles in the mantle transition zone and their effects on big mantle wedge systems.

The mantle transition zone (MTZ) is a layer between the upper and lower mantle that plays a crucial role in Earth's deep structure and material circulation. It is increasingly recognized as a potential repository for volatiles, such as water, which can have significant effects on mantle dynamics, melting processes, diamond formation, volcanic activity, and volatile cycling. The presence of water in the MTZ has been a topic of debate, but recent evidence suggests that it may be hydrous to some extent. Other volatiles, such as halogens, sulfur, nitrogen, and noble gases, also have important roles in the MTZ. Understanding the behavior and effects of these volatiles in the MTZ is essential for advancing deep Earth science. Further research and advanced analytical techniques are needed to fully understand the volatile budget in the deep Earth. [Extracted from the article]

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