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URN to cite this document: urn:nbn:de:bvb:703-epub-8353-3
Title data
Purevjav, Narangoo ; Fei, Hongzhan ; Ishii, Takayuki ; Criniti, Giacomo ; Lin, Yanhao ; Mao, Ho-Kwang ; Katsura, Tomoo:
Temperature Dependence of H₂O Solubility in Al-Free Stishovite.
In: Geophysical Research Letters.
Vol. 51
(2024)
Issue 3
.
- e2023GL104029.
ISSN 1944-8007
DOI der Verlagsversion: https://doi.org/10.1029/2023GL104029
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Project's official title Project's id Open Access Publizieren No information |
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Deutsche Forschungsgemeinschaft |
Abstract
The role of stishovite in transporting water in subducting slabs has been a subject of debate for several decades. Here we investigated stishovite's water solubility and its potential role in water transportation as a function of temperature from 1300 to 2100°C at 22 GPa. Under water-saturated conditions, high-quality, Al-free stishovite single crystals were synthesized with multi-anvil press, and their water contents were measured using infrared spectroscopy. The H₂O solubility in stishovite increases from 128(20) to 521(47) wt. ppm with increasing temperature from 1300 to 1700°C and decreased to 145(26) wt. ppm at 2100°C. The maximum H₂O content was about seven times larger than earlier high-temperature multi-anvil studies but significantly lower than recent laser-heated diamond anvil cell and low-temperature multi-anvil studies. We suggest that Al-free stishovite may not be a significant H₂O carrier in subducting slabs, at least at the topmost lower mantle corresponding to our experimental conditions.
Further data
| Item Type: | Article in a journal |
|---|---|
| Additional notes (visible to public): | e2023GL104029 2023GL104029 |
| Keywords: | water solubility in stishovite; water in deep mantle; subducting slabs |
| DDC Subjects: | 500 Science > 550 Earth sciences, geology |
| Institutions of the University: | Research Institutions > Central research institutes > Bavarian Research Institute of Experimental Geochemistry and Geophysics - BGI Research Institutions Research Institutions > Central research institutes |
| Language: | English |
| Originates at UBT: | Yes |
| URN: | urn:nbn:de:bvb:703-epub-8353-3 |
| Date Deposited: | 25 Mar 2025 10:52 |
| Last Modified: | 25 Mar 2025 10:53 |
| URI: | https://epub.uni-bayreuth.de/id/eprint/8353 |
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