The dynamic equilibrium between mantle degassing and water recycling in subduction zones controls the variation of sea level in deep geologic time, as well as the size of Earth’s interior hydrogen reservoir. While the principles of water transport and water release by common hydrous minerals in the subducted crust are relatively well understood, the importance of deep serpentinization of the slab, the contribution of nominally anhydrous minerals and dense hydrous magnesium silicates to water transport, and the mechanisms of water subduction into the lower mantle are still subjects of active research. A quantitative understanding of these processes is required to constrain the evolution of Earth’s deep water cycle through geologic time and the role of water in stabilizing plate tectonics.
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Research Article|
August 01, 2024
The Subduction of Hydrogen: Deep Water Cycling, Induced Seismicity, and Plate Tectonics
Hans Keppler;
Bayerisches Geoinstitut, Universität Bayreuth, 95440 Bayreuth, Germany
E-mail: [email protected]
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Eiji Ohtani;
Department of Earth Science, Tohoku University, Sendai 980-8578, Japan
E-mail: [email protected]
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Xiaozhi Yang
School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China
E-mail: [email protected]
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Publisher: Mineralogical Society of America
First Online:
07 Aug 2024
Online ISSN: 1811-5217
Print ISSN: 1811-5209
Copyright © 2024 by the Mineralogical Society of America
Mineralogical Society of America
Elements (2024) 20 (4): 229–234.
Article history
First Online:
07 Aug 2024
Citation
Hans Keppler, Eiji Ohtani, Xiaozhi Yang; The Subduction of Hydrogen: Deep Water Cycling, Induced Seismicity, and Plate Tectonics. Elements 2024;; 20 (4): 229–234. doi: https://doi.org/10.2138/gselements.20.4.229
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Index Terms/Descriptors
- chain silicates
- clinopyroxene
- dehydration
- eclogite
- experimental studies
- framework silicates
- garnet group
- hydrogen
- laboratory studies
- lower mantle
- magnesian silicates
- mantle
- metamorphic rocks
- mica group
- nesosilicates
- olivine
- olivine group
- omphacite
- orthosilicates
- phase equilibria
- phengite
- plate tectonics
- pyroxene group
- ringwoodite
- seismicity
- serpentine
- serpentine group
- sheet silicates
- silica minerals
- silicates
- stability
- stishovite
- subduction
- wadsleyite
- water
- water content
- bridgmanite
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