Kinetics and detectability of the bridgmanite to post-perovskite transformation in the Earth's D″ layer
The D$${}^{{\prime\prime} }$$ ″ layer in the Earth’s lower mantle involves a seismic discontinuity which is often assigned to a mineral phase transition to post-perovskite, however, as this phase transition occurs over broad region the assignment of seismic boundaries remains unclear. Here, the auth...
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| Auteurs principaux: | , , , , , , |
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| Format: | article |
| Langue: | EN |
| Publié: |
Nature Portfolio
2019
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| Accès en ligne: | https://doaj.org/article/078c65dbb8b74458bdeab416a74032d2 |
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| Résumé: | The D$${}^{{\prime\prime} }$$ ″ layer in the Earth’s lower mantle involves a seismic discontinuity which is often assigned to a mineral phase transition to post-perovskite, however, as this phase transition occurs over broad region the assignment of seismic boundaries remains unclear. Here, the authors find that due to the kinetics of the bridgmanite to post-perovskite transformation, thick transition layers can be detected by seismic reflections, unlike previously thought. |
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