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).
|Journal||Geophysical Research Letters|
|Publication status||Published - 2008 Feb 16|
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)