A Stress Memory Effect in Olivine at Upper Mantle Pressures and Temperatures

Abstract Cyclic deformation experiments on olivine aggregates have been conducted at pressures of 1.9–2.8 GPa and temperatures of 297–1250 K. Measurements of mechanical data combined with acoustic emission (AE) monitoring revealed that activity of AE increased with differential stress and ceased once loading was halted in the anelastic regime. AE output abruptly recommenced when the differential stress exceeded the previous maximum stress during a reloading cycle at temperatures lower than 1150 K (i.e., the stress memory effect). In contrast, a number of AEs radiated even at stresses much less than the previous maximum stress (i.e., breakdown of the memory effect) as a result of a 1‐hr annealing treatment at 1250 K before each reloading cycle. These observations are explained by the accumulation/release of back stress in olivine crystals. Due to sluggish release of back stress in olivine, the stress memory effect could be effective under the pressure‐temperature conditions of subducting slabs.

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Publication Details

Journal
Geophysical Research Letters
Published
2025-05-10
DOI
https://doi.org/10.1029/2025gl114960
Citations
1
Primary Topic
High-pressure geophysics and materials
Type
article
Field-Weighted Citation Impact
1.87

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article

A Stress Memory Effect in Olivine at Upper Mantle Pressures and Temperatures

Tomohiro Ohuchi, Noriyoshi Tsujino, Hirokatsu Yumoto, Ichiro Inoue et al.
1 citations
Geophysical Research Letters
High-pressure geophysics and materials
1.87
article

A Stress Memory Effect in Olivine at Upper Mantle Pressures and Temperatures

Tomohiro Ohuchi, Noriyoshi Tsujino, Hirokatsu Yumoto, Ichiro Inoue, Tetsuo Irifune, H. Ohsumi, Sho Kakizawa, Haruhiko Ohashi, Takahisa Koyama, Yasunori Senba, Yujiro Hayashi, Yoshio Kono, Yusuke Seto, Hiroshi Yamazaki, Yuji Higo, Makina Yabashi
article en
1 citations

Abstract

Abstract Cyclic deformation experiments on olivine aggregates have been conducted at pressures of 1.9–2.8 GPa and temperatures of 297–1250 K. Measurements of mechanical data combined with acoustic emission (AE) monitoring revealed that activity of AE increased with differential stress and ceased once loading was halted in the anelastic regime. AE output abruptly recommenced when the differential stress exceeded the previous maximum stress during a reloading cycle at temperatures lower than 1150 K (i.e., the stress memory effect). In contrast, a number of AEs radiated even at stresses much less than the previous maximum stress (i.e., breakdown of the memory effect) as a result of a 1‐hr annealing treatment at 1250 K before each reloading cycle. These observations are explained by the accumulation/release of back stress in olivine crystals. Due to sluggish release of back stress in olivine, the stress memory effect could be effective under the pressure‐temperature conditions of subducting slabs.

Geophysical Research LettersVol. 52(9)
Tokyo Institute of Technology (JP), Kwansei Gakuin University (JP), SPring-8 (JP), Japan Synchrotron Radiation Research Institute (JP), Life Science Institute (JP), Ehime University (JP), Osaka Metropolitan University (JP), Tokyo Metropolitan University (JP)
Mitsubishi Foundation, Japan Society for the Promotion of Science
Openalex Percentile: Top 19%
High-pressure geophysics and materials
1.87
DOIOpen Access PDFOpenAlex
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