In situ observation of shock-induced structural evolution of calcite

Abstract In this study, we aimed to evaluate the shock-induced behavior of calcite (CaCO 3 ), a potential source of CO and/or CO 2 . To this end, we experimentally investigated the time evolution of calcite during shock compression and decompression processes at shock pressures up to 234 ± 19 GPa using an ultrafast time-resolved X-ray diffraction (XRD) coupled with a laser-driven shock compression system. The XRD analysis of shocked calcite showed that the amorphization occurred in the shock compression stage at pressures above 86 ± 7 GPa, and that the decomposition reaction, i.e., CaCO 3 = CaO + CO 2 , was not observed in the decompression stage within the nanosecond timescale. This observation indicated that in addition to pressure and temperature, the shock duration (reaction time) is also a critical factor affecting shock-induced structural changes, such as amorphization and decomposition. Furthermore, the nanosecond laser shock employed in this study may be applied to enhance understanding regarding the impact phenomena of micrometer to submillimeter sized projectiles. The present results suggest that the shock-induced decomposition of calcite does not occur during micrometeorite impacts.

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Publication Details

Journal
Physics and Chemistry of Minerals
Published
2025-05-04
DOI
https://doi.org/10.1007/s00269-025-01320-0
Citations
3
Primary Topic
High-pressure geophysics and materials
Type
article
Field-Weighted Citation Impact
5.60

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article

In situ observation of shock-induced structural evolution of calcite

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3 citations
Physics and Chemistry of Minerals
High-pressure geophysics and materials
5.60
article

In situ observation of shock-induced structural evolution of calcite

Naotaka Tomioka, Takuo Okuchi, Keiichi Sueda, T. Yabuuchi, Norimasa Ozaki, Yoichiro Hironaka, Hirotaka Nakamura, Toshimori Sekine, Kento Katagiri, Y. Umeda, Tadashi Togashi, Tomoko Sato, Makina Yabashi, Kohei Miyanishi, Yusuke Seto, Yuichi Inubushi, Ryosuke Kodama
article en
3 citations

Abstract

Abstract In this study, we aimed to evaluate the shock-induced behavior of calcite (CaCO 3 ), a potential source of CO and/or CO 2 . To this end, we experimentally investigated the time evolution of calcite during shock compression and decompression processes at shock pressures up to 234 ± 19 GPa using an ultrafast time-resolved X-ray diffraction (XRD) coupled with a laser-driven shock compression system. The XRD analysis of shocked calcite showed that the amorphization occurred in the shock compression stage at pressures above 86 ± 7 GPa, and that the decomposition reaction, i.e., CaCO 3 = CaO + CO 2 , was not observed in the decompression stage within the nanosecond timescale. This observation indicated that in addition to pressure and temperature, the shock duration (reaction time) is also a critical factor affecting shock-induced structural changes, such as amorphization and decomposition. Furthermore, the nanosecond laser shock employed in this study may be applied to enhance understanding regarding the impact phenomena of micrometer to submillimeter sized projectiles. The present results suggest that the shock-induced decomposition of calcite does not occur during micrometeorite impacts.

Physics and Chemistry of MineralsVol. 52(2)
Hiroshima University (JP), Japan Agency for Marine-Earth Science and Technology (JP), Okayama University (JP), Kyoto University (JP), SPring-8 (JP), Japan Synchrotron Radiation Research Institute (JP), Center for High Pressure Science & Technology Advanced Research (CN), Osaka Metropolitan University (JP), Kobe University (JP), Kōchi University (JP), The University of Osaka (JP)
Japan Society for the Promotion of Science
Openalex Percentile: Top 5%
High-pressure geophysics and materials
5.60
DOIOpen Access PDFOpenAlex
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