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

作　　者：Yu Wang Yi-Gang Xu 

机构地区：[1]State Key Laboratory of Isotope Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,China [2]Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou),China

出　　处：《National Science Review》2024年第6期8-11,共4页国家科学评论（英文版）

基　　金：supported by the National Key R&D Program of China(2023YFF0803403);the National Natural Science Foundation of China(42222204 and 42288201);the Youth Innovation Promotion Association of the Chinese Academy of Sciences(2020348);the PI Project of Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou)(GML2022006).

摘　　要：The mantle transition zone(MTZ),located between the upper and lower mantle,is characterized by sudden seismicvelocity discontinuities at depths of 410 and 660 km where significant change in mineralogical composition occurs.As a link between the upper and lower mantle,the MTZ is a layer of special significance in Earth’s deep structure,and a critical interface in geodynamics and material circulation.Moreover,it has been increasingly recognized as a potential considerable repository for volatiles,and exerts great influence on the mantle dynamics,melting processes,diamond formation,volcanic activity and volatile cycling of the Earth.For example,the MTZ may represent the largest water reservoir hidden in the deep Earth.

关 键 词：MANTLE EARTH RESERVOIR 

分 类 号：P542.5[天文地球—构造地质学]