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The Structure of Iron in Earth’s Inner Core
Abstract
Packing the Core: The packing and arrangement of atoms in Earth's solid inner core can dictate processes such as core growth and rotation. Seismology and modeling suggest the inner core is composed primarily of iron, but the structure is less clear due to anisotropic splitting of seismic waves. Tateno et al. (p. 359 ) performed static compression experiments on pure iron at the extremely high pressures and temperatures found in the inner core and saw that iron prefers a hexagonal close-packed structure, as opposed to cubic structures. The results help to explain the observed seismic anisotropy, and also suggest that individual iron crystals in the core may prefer orienting themselves with their long crystallographic axes parallel to Earth's rotation axis.
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Cited by
Direct measurement of thermal conductivity in solid iron at planetary core conditions
Konôpková, Z., McWilliams, R. S., Gómez-Pérez, N., & Goncharov, A. F. (2016) · Nature · doi:10.1038/nature18009 · Cited by 309
Frey, P. A., & Reed, G. H. (2012) · ACS Chemical Biology · doi:10.1021/cb300323q · Cited by 299
Heterogeneity and Anisotropy of Earth's Inner Core
Deuss, A. (2014) · Annual Review of Earth and Planetary Sciences · doi:10.1146/annurev-earth-060313-054658 · Cited by 114
Metadata
- Authors
- Tateno, S., Hirose, K., Ohishi, Y., & Tatsumi, Y.
- Venue
- Science
- Published
- 2010-10-15
- Volume
- 330
- Issue
- 6002
- Pages
- 359-361
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2060413224
- Cited by
- 496
- References
- 0
- FWCI
- 25.66
- 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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