Special Section
Phase Stability and Reactions of Subducting CaCO3 under Upper Mantle Conditions
Weibin GUI,
Kewei SHEN,
Jin LIU,
Weibin GUI
Center for High Pressure Science and Technology Advanced Research, Beijing, 100193 China
Search for more papers by this authorCorresponding Author
Kewei SHEN
Center for High Pressure Science and Technology Advanced Research, Beijing, 100193 China
Corresponding authors. E-mail: [email protected]; [email protected]Search for more papers by this authorCorresponding Author
Jin LIU
Center for High Pressure Science, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei, 066004 China
Corresponding authors. E-mail: [email protected]; [email protected]Search for more papers by this authorWeibin GUI,
Kewei SHEN,
Jin LIU,
Weibin GUI
Center for High Pressure Science and Technology Advanced Research, Beijing, 100193 China
Search for more papers by this authorCorresponding Author
Kewei SHEN
Center for High Pressure Science and Technology Advanced Research, Beijing, 100193 China
Corresponding authors. E-mail: [email protected]; [email protected]Search for more papers by this authorCorresponding Author
Jin LIU
Center for High Pressure Science, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei, 066004 China
Corresponding authors. E-mail: [email protected]; [email protected]Search for more papers by this authorFirst published: 15 March 2023
About the first author:
GUI Weibin, male, born in 1993 in Laizhou, Shandong Province, China. Ph.D. candidate in high-pressure geochemistry at the Center for High Pressure Science and Technology Advanced Research. He is currently interested in the geochemical behavior of carbonates and hydrous minerals under high pressure and temperature conditions. E-mail: [email protected].
About the corresponding authors:
SHEN Kewei, female, born in 1993 in Xingtai, Hebei Province, China. Postdoctoral researcher at the Center for High Pressure Science and Technology Advanced Research. Her research interests focus on the physics and chemistry of minerals and rocks under high-pressure-temperature conditions. E-mail: [email protected].
LIU Jin, male, born in 1984 in Jiangsu Province, China, Ph.D.; professor of mineral physics at Yanshan University. He has been focused on the physical and chemical properties of planetary materials under extreme conditions since 2007. E-mail: [email protected].
Abstract
CaCO3 is an important component of marine sediments and one of the major deep-carbon carriers at subduction zones. Some subducted CaCO3 can be dissolved in subduction fluids and recycled back to the surface via arc volcanoes degassing. At the same time, there still remain large amounts of CaCO3 and its reaction products, which could be further transported into Earth's deep interior. These internal processes link atmosphere, hydrosphere and biosphere with the deep solid Earth, modifying the environments of our planet. In this review, we summarize current understanding from high pressure-temperature experiments and field petrological observations on the physical and chemical properties of CaCO3. In particular, the phase stability and reactions of CaCO3 largely control the migration and reservation of oxidized carbon in subducting slabs. Finally, we present several critical but unsolved questions on CaCO3 subducting in the deep mantle.
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