Mars: A New Core-Crystallization Regime

Details Mars: A New Core-Crystallization Regime Mars: A New Core-Crystallization Regime

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sci...316.1323s&link_type=abstract

Science, Volume 316, Issue 5829, pp. 1323- (2007).

Computer Science

34

Scientific paper

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.

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