Journal article
Mars: a new core-crystallization regime.
- Stewart AJ Institute for Mineralogy and Petrology, Eidgenössische Technische Hochschule Zurich, CH 8092 Zurich, Switzerland.
- Schmidt MW
- van Westrenen W
- Liebske C
- 2007-06-02
Published in:
- Science (New York, N.Y.). - 2007
English
The evolution of the martian core is widely assumed to mirror the characteristics observed for Earth's core. Data from experiments performed on iron-sulfur and iron-nickel-sulfur systems at pressures corresponding to the center of Mars indicate that its core is presently completely liquid and that it will not form an outwardly crystallizing iron-rich inner core, as does Earth. Instead, planetary cooling will lead to core crystallization following either a "snowing-core" model, whereby iron-rich solids nucleate in the outer portions of the core and sink toward the center, or a "sulfide inner-core" model, where an iron-sulfide phase crystallizes to form a solid inner core.
- Language
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- English
- Open access status
- closed
- Identifiers
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- DOI 10.1126/science.1140549
- PMID 17540900
- Persistent URL
- https://sonar.ch/global/documents/111569
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