Hao, Ming, Zhou, Wen-Yi, Hrubiak, Rostislav, Kenney-Benson, Curtis, Kavanagh, Janine L 
ORCID: 0000-0003-0274-9843, Davis, William and Zhang, Jin S
(2024)
The ultralow viscosity of volatile-rich kimberlite magma: Implications for the water content of primitive kimberlite melts
Science Advances, 10 (36).
eado8550-.
ISSN 2375-2548, 2375-2548
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Hao et al 2024.pdf - Open Access published version Download (790kB) | Preview |
Abstract
The eruption of deeply sourced kimberlite magma offers the fastest route to bring deep-seated volatiles back to the Earth’s surface. However, the viscosity of kimberlite magma, a factor governing its migration and eruption dynamics within Earth, remains poorly constrained. We conducted synchrotron in situ falling sphere viscometry experiments to examine kimberlite magma with different volatile contents (0 to 5 wt % H 2 O and 2 to 8 wt % CO 2 ) under high pressure-temperature conditions. The results reveal that the viscosity of volatile-rich kimberlite magma is ~1 to 2 orders lower than that of mid-ocean ridge basalt (MORB) and comparable to the ultramobile pure carbonate melt. Using the measured viscosity values, we simulated the ascent and eruption process of kimberlite magma. We found that a minimum content of ~0.5 wt % water in the primitive magma is necessary to allow the ultrafast eruption process of kimberlite, thereby enabling the preservation of diamonds and high-pressure mineral inclusions transported by the magma.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 37 Earth Sciences, 3703 Geochemistry, 3705 Geology, 3706 Geophysics |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 10 Sep 2024 08:09 |
| Last Modified: | 28 Feb 2026 15:42 |
| DOI: | 10.1126/sciadv.ado8550 |
| Related Websites: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3184389 |
| Disclaimer: | The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate. |
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