Melting phase relations in the MgSiO3–CaSiO3 system at 24 GPa
Abstract The Earth’s lower mantle is composed of bridgmanite, ferropericlase, and CaSiO3-rich perovskite. The melting phase relations between each component are key to understanding the melting of the Earth’s lower mantle and the crystallization of the deep magma ocean. In this study, melting phase...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2017-11-01
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| Series: | Progress in Earth and Planetary Science |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s40645-017-0149-2 |
| _version_ | 1828772068821303296 |
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| author | Ryuichi Nomura Youmo Zhou Tetsuo Irifune |
| author_facet | Ryuichi Nomura Youmo Zhou Tetsuo Irifune |
| author_sort | Ryuichi Nomura |
| collection | DOAJ |
| description | Abstract The Earth’s lower mantle is composed of bridgmanite, ferropericlase, and CaSiO3-rich perovskite. The melting phase relations between each component are key to understanding the melting of the Earth’s lower mantle and the crystallization of the deep magma ocean. In this study, melting phase relations in the MgSiO3–CaSiO3 system were investigated at 24 GPa using a multi-anvil apparatus. The eutectic composition is (Mg,Ca)SiO3 with 81–86 mol% MgSiO3. The solidus temperature is 2600–2620 K. The solubility of CaSiO3 component into bridgmanite increases with temperature, reaching a maximum of 3–6 mol% at the solidus, and then decreases with temperature. The same trend was observed for the solubility of MgSiO3 component into CaSiO3-rich perovskite, with a maximum of 14–16 mol% at the solidus. The asymmetric regular solutions between bridgmanite and CaSiO3-rich perovskite and between MgSiO3 and CaSiO3 liquid components well reproduce the melting phase relations constrained experimentally. |
| first_indexed | 2024-12-11T14:37:03Z |
| format | Article |
| id | doaj.art-5e8994d040f345d0aec3224591a0c51d |
| institution | Directory Open Access Journal |
| issn | 2197-4284 |
| language | English |
| last_indexed | 2024-12-11T14:37:03Z |
| publishDate | 2017-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Progress in Earth and Planetary Science |
| spelling | doaj.art-5e8994d040f345d0aec3224591a0c51d2022-12-22T01:02:07ZengSpringerOpenProgress in Earth and Planetary Science2197-42842017-11-014111110.1186/s40645-017-0149-2Melting phase relations in the MgSiO3–CaSiO3 system at 24 GPaRyuichi Nomura0Youmo Zhou1Tetsuo Irifune2Geodynamics Research Center, Ehime UniversityGeodynamics Research Center, Ehime UniversityGeodynamics Research Center, Ehime UniversityAbstract The Earth’s lower mantle is composed of bridgmanite, ferropericlase, and CaSiO3-rich perovskite. The melting phase relations between each component are key to understanding the melting of the Earth’s lower mantle and the crystallization of the deep magma ocean. In this study, melting phase relations in the MgSiO3–CaSiO3 system were investigated at 24 GPa using a multi-anvil apparatus. The eutectic composition is (Mg,Ca)SiO3 with 81–86 mol% MgSiO3. The solidus temperature is 2600–2620 K. The solubility of CaSiO3 component into bridgmanite increases with temperature, reaching a maximum of 3–6 mol% at the solidus, and then decreases with temperature. The same trend was observed for the solubility of MgSiO3 component into CaSiO3-rich perovskite, with a maximum of 14–16 mol% at the solidus. The asymmetric regular solutions between bridgmanite and CaSiO3-rich perovskite and between MgSiO3 and CaSiO3 liquid components well reproduce the melting phase relations constrained experimentally.http://link.springer.com/article/10.1186/s40645-017-0149-2BridgmaniteCaSiO3-rich perovskiteMelting phase relationsMulti-anvil experimentsHigh pressure and high temperatureThermodynamics |
| spellingShingle | Ryuichi Nomura Youmo Zhou Tetsuo Irifune Melting phase relations in the MgSiO3–CaSiO3 system at 24 GPa Progress in Earth and Planetary Science Bridgmanite CaSiO3-rich perovskite Melting phase relations Multi-anvil experiments High pressure and high temperature Thermodynamics |
| title | Melting phase relations in the MgSiO3–CaSiO3 system at 24 GPa |
| title_full | Melting phase relations in the MgSiO3–CaSiO3 system at 24 GPa |
| title_fullStr | Melting phase relations in the MgSiO3–CaSiO3 system at 24 GPa |
| title_full_unstemmed | Melting phase relations in the MgSiO3–CaSiO3 system at 24 GPa |
| title_short | Melting phase relations in the MgSiO3–CaSiO3 system at 24 GPa |
| title_sort | melting phase relations in the mgsio3 casio3 system at 24 gpa |
| topic | Bridgmanite CaSiO3-rich perovskite Melting phase relations Multi-anvil experiments High pressure and high temperature Thermodynamics |
| url | http://link.springer.com/article/10.1186/s40645-017-0149-2 |
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