Journal article
The effect of intracrystalline water on the mechanical properties of olivine at room temperature
- Abstract:
- The effect of small concentrations of intracrystalline water on the strength of olivine is significant at asthenospheric temperatures but is poorly constrained at lower temperatures applicable to the shallow lithosphere. We examined the effect of water on the yield stress of olivine during low-temperature plasticity using room-temperature Berkovich nanoindentation. The presence of water in olivine (1,600 ppm H/Si) does not affect hardness or yield stress relative to dry olivine (≤40 ppm H/Si) outside of uncertainty but may slightly reduce Young’s modulus. Differences between water-bearing and dry crystals in similar orientations were minor compared to differences between dry crystals in different orientations. These observations suggest water content does not affect the strength of olivine at low homologous temperatures. Thus, intracrystalline water does not play a role in olivine deformation at these temperatures, implying that water does not lead to weakening in the coldest portions of the mantle.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 2.9MB, Terms of use)
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- Publisher copy:
- 10.1029/2023gl106325
Authors
+ UK Research and Innovation
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- Funder identifier:
- https://ror.org/001aqnf71
- Grant:
- MR/V021788/1
- Programme:
- UKRI Future Leaders Fellowship
+ National Science Foundation
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- Funder identifier:
- https://ror.org/021nxhr62
- Grant:
- EAR-1625032
- EAR-1806791
- EAR-1255620
- EAR-202243
+ Netherlands Organisation for Scientific Research
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- Funder identifier:
- https://ror.org/04jsz6e67
- Grant:
- ENW.GO.001.005
- ALWGO.2018.038
+ Natural Environment Research Council
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- Funder identifier:
- https://ror.org/02b5d8509
- Grant:
- NE/M000966/1
- Publisher:
- American Geophysical Union
- Journal:
- Geophysical Research Letters More from this journal
- Volume:
- 51
- Issue:
- 4
- Article number:
- e2023GL106325
- Publication date:
- 2024-02-21
- Acceptance date:
- 2024-02-07
- DOI:
- EISSN:
-
1944-8007
- ISSN:
-
0094-8276
- Language:
-
English
- Keywords:
- Pubs id:
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1639368
- Local pid:
-
pubs:1639368
- Deposit date:
-
2024-03-07
Terms of use
- Copyright holder:
- Kumamoto et al.
- Copyright date:
- 2024
- Rights statement:
- © 2024. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
- Licence:
- CC Attribution (CC BY)
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