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Structure and Freezing of MgSiO 3 Liquid in Earth's Lower Mantle
Abstract
First-principles molecular-dynamics simulations show that over the pressure regime of Earth's mantle the mean silicon-oxygen coordination number of magnesium metasilicate liquid changes nearly linearly from 4 to 6. The density contrast between liquid and crystal decreases by a factor of nearly 5 over the mantle pressure regime and is 4% at the core-mantle boundary. The ab initio melting curve, obtained by integration of the Clausius-Clapeyron equation, yields a melting temperature at the core-mantle boundary of 5400 ± 600 kelvins.
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Cited by
Santodonato, L. J., Zhang, Y., Feygenson, M., Parish, C. M., Gao, M. C., Weber, R. J. K., Neuefeind, J. C., Tang, Z., & Liaw, P. K. (2015) · Nature Communications · doi:10.1038/ncomms6964 · Cited by 708
Magma oceans in the inner solar system
Elkins-Tanton, L. T. (2012) · Annual Review of Earth and Planetary Sciences · doi:10.1146/annurev-earth-042711-105503 · Cited by 601
Melting and mixing states of the Earth’s mantle after the Moon-forming impact
Nakajima, M., & Stevenson, D. J. (2015) · Earth and Planetary Science Letters · doi:10.1016/j.epsl.2015.06.023 · Cited by 215
Metadata
- Authors
- Stixrude, L., & Karki, B.
- Venue
- Science
- Published
- 2005-10-14
- Volume
- 310
- Issue
- 5746
- Pages
- 297-299
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W1964927447
- Cited by
- 315
- References
- 0
- FWCI
- 13.30
- Type
- journal article
- Language
- en
- Open access
- closed
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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