Hydrogen partitioning into molten iron at high pressure: Implications for earth's core

Research output: Contribution to journalReview article

143 Citations (Scopus)

Abstract

Because of dissolution of lighter elements such as sulfur, carbon, hydrogen, and oxygen, Earth's outer core is about 10 percent less dense than molten iron at the relevant pressure and temperature conditions. To determine whether hydrogen can account for a major part of the density deficit and is therefore an important constituent in the molten iron outer core, the hydrogen concentration in molten iron was measured at 7.5 gigapascals. From these measurements, the metal-silicate melt partitioning coefficient of hydrogen was determined as a function of temperature. If the magma ocean of primordial Earth was hydrous, more than 95 mole percent of H2O in this ocean should have reacted with iron to form Felix, and about 60 percent of the density deficit is reconciled by adding hydrogen to the core.

Original languageEnglish
Pages (from-to)1781-1784
Number of pages4
JournalScience
Volume278
Issue number5344
DOIs
Publication statusPublished - Dec 5 1997
Externally publishedYes

ASJC Scopus subject areas

  • General

Fingerprint Dive into the research topics of 'Hydrogen partitioning into molten iron at high pressure: Implications for earth's core'. Together they form a unique fingerprint.

  • Cite this