Solubility of silicon and oxygen in liquid iron coexisting with (Mg,Fe)SiO3-perovskite and implications for core formation

T. Kawazoe, Eiji Otani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Solubilities of silicon and oxygen in liquid iron coexisting with Mg-perovskite were investigated at 27 GPa and 2320-3040 K to discub a core formation proceb and light elements in earth's core. The earth's core contains light elements and these light elements were dibolved into liquid iron to form the core during core formation proceb. A reaction between the liquid iron and Mg-perovskite must have occurred at a base of a deep magma ocean and could have provided silicon and oxygen as the light elements into the liquid iron. In this study, high prebure and temperature experiments were conducted with a Kawai-Type multi-Anvil apparatus. The liquid iron reacted with Mg-perovskie to form the magnesiowustite and silicon and oxygen dibolved into the liquid iron at temperatures above 2640 K. The solubility of silicon in the liquid iron decreases, whereas that of oxygen increases with increasing oxygen fugacity, and both increase with increasing temperature. This implies a pobibility that silicon and oxygen are the light elements in the earth's core.

Original languageEnglish
Title of host publicationJoint 20th AIRAPT and 43rd EHPRG International Conference on High Pressure Science and Technology
EditorsEckhard Dinjus
PublisherKarlsruhe Forschungszentrum Karlsruhe gmbH
ISBN (Electronic)9783923704491
Publication statusPublished - 2005 Jan 1
EventInternational Joint 20th AIRAPT and 43rd EHPRG International Conference on High Pressure Science and Technology - Karlsruhe, Germany
Duration: 2005 Jun 272005 Jul 1

Publication series

NameJoint 20th AIRAPT and 43rd EHPRG International Conference on High Pressure Science and Technology

Other

OtherInternational Joint 20th AIRAPT and 43rd EHPRG International Conference on High Pressure Science and Technology
CountryGermany
CityKarlsruhe
Period05/6/2705/7/1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Nuclear and High Energy Physics

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