GSTDTAP  > 气候变化
DOI10.1029/2020GL091130
The role of post‐shock heating by plastic deformation during impact devolatilization of calcite
Kosuke Kurosawa; Hidenori Genda; Shintaro Azuma; Keishi Okazaki
2021-03-22
发表期刊Geophysical Research Letters
出版年2021
英文摘要

An accurate understanding of the relationship between the impact conditions and the degree of shock‐induced thermal metamorphism in meteorites allows the impact environment in the early Solar System to be understood. A recent hydrocode has revealed that impact heating is much higher than previously thought. This is because plastic deformation of the shocked rocks causes further heating during decompression, which is termed post‐shock heating. Here we compare impact simulations with laboratory experiments on the impact devolatilization of calcite to investigate whether the post‐shock heating is also significant in natural samples. We calculated the mass of CO2 produced from the calcite, based on thermodynamics. We found that iSALE can reproduce the devolatilization behavior for rocks with the strength of calcite. In contrast, the calculated masses of CO2 at lower rock strengths are systematically smaller than the experimental values. Our results require a reassessment of the interpretation of thermal metamorphism in meteorites. (150/150 words)

领域气候变化
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/320986
专题气候变化
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Kosuke Kurosawa,Hidenori Genda,Shintaro Azuma,等. The role of post‐shock heating by plastic deformation during impact devolatilization of calcite[J]. Geophysical Research Letters,2021.
APA Kosuke Kurosawa,Hidenori Genda,Shintaro Azuma,&Keishi Okazaki.(2021).The role of post‐shock heating by plastic deformation during impact devolatilization of calcite.Geophysical Research Letters.
MLA Kosuke Kurosawa,et al."The role of post‐shock heating by plastic deformation during impact devolatilization of calcite".Geophysical Research Letters (2021).
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