Aluminous hydrous mineral δ-AlOOH as a carrier of hydrogen into the core-mantle boundary

Asami Sano, Eiji Ohtani, Tadashi Kondo, Naohisa Hirao, Takeshi Sakai, Nagayoshi Sata, Yasuo Ohishi, Takumi Kikegawa

Research output: Contribution to journalArticlepeer-review

81 Citations (Scopus)

Abstract

In-situ X-ray diffraction experiments were conducted to determine the stability field of the aluminous hydrous mineral δ-AlOOH over the entire conditions of the lower mantle. We observed δ-AlOOH at pressures from 33 to 134 GPa at 1350-2300 K, indicating that this hydrous mineral in the sediment layer of a subducting slab could transport hydrogen into the core-mantle boundary (CMB).

Original languageEnglish
Article numberL03303
JournalGeophysical Research Letters
Volume35
Issue number3
DOIs
Publication statusPublished - 2008 Feb 16

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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