Aluminous hydrous mineral <i>δ</i>‐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

doi:10.1029/2007gl031718

Aluminous hydrous mineral <i>δ</i>‐AlOOH as a carrier of hydrogen into the core‐mantle boundary

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Asami Sano

Institute of Mineralogy, Petrology and Economic Geology, Faculty of Science Tohoku University Sendai Japan
Eiji Ohtani

Institute of Mineralogy, Petrology and Economic Geology, Faculty of Science Tohoku University Sendai Japan
Tadashi Kondo

Department of Earth and Space Science, Graduate School of Science Osaka University Osaka Japan
Naohisa Hirao

Japan Synchrotron Radiation Research Institute Sayo Japan
Takeshi Sakai

Institute of Mineralogy, Petrology and Economic Geology, Faculty of Science Tohoku University Sendai Japan
Nagayoshi Sata

Japan Marine Science and Technology Center Japan Agency for Marine‐Earth Science and Technology Yokosuka Japan
Yasuo Ohishi

Japan Synchrotron Radiation Research Institute Sayo Japan
Takumi Kikegawa

Photon Factory High Energy Accelerator Research Organization Tsukuba Japan

書誌事項

公開日: 2008-02

権利情報

http://onlinelibrary.wiley.com/termsAndConditions#vor

DOI

10.1029/2007gl031718

公開者: American Geophysical Union (AGU)

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説明

<jats:p>In‐situ X‐ray diffraction experiments were conducted to determine the stability field of the aluminous hydrous mineral <jats:italic>δ</jats:italic>‐AlOOH over the entire conditions of the lower mantle. We observed <jats:italic>δ</jats:italic>‐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).</jats:p>