Constraining Earth's core composition from inner core nucleation.

ABSTRACT: The composition of Earth's core is a fundamental property of the Earth's deep interior, defining its present structure and long term thermal and magnetic evolution. However, the composition of the core is not well understood, with several combinations of light elements being able to satisfy the traditional constraints from cosmochemistry, core formation and seismology. The classic view of inner core formation does not include the necessity for liquids to be supercooled to below their melting point before freezing. Attempts to calculate the magnitude of this supercooling have found that several binary core compositions are incompatible with inner core nucleation. Here we show, through molecular dynamics simulations, that nucleation from an Fe_1-xC_x=0.1-0.15 composition

SUBMITTER: Wilson AJ 

PROVIDER: S-EPMC12411617 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature