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Water in Earth's lower mantle | | Motohiko Murakami
; Kei Hirose
; Hisayoshi Yurimoto
; Satoru Nakashima
; Naoto Takafuji
; | | Date: |
8 Mar 2002 | | Journal: | Science, 295 (5561), 1885-7 | | Abstract: | Secondary ion mass spectrometry measurements show that Earth’s representative lower mantle minerals synthesized in a natural peridotitic composition can dissolve considerable amounts of hydrogen. Both MgSiO3-rich perovskite and magnesiowüstite contain about 0.2 weight percent (wt%) H2O, and CaSiO3-rich perovskite contains about 0.4 wt% H2O. The OH absorption bands in Mg-perovskite and magnesiowüstite were also confirmed with the use of infrared microspectroscopic measurements. Earth’s lower mantle may store about five times more H2O than the oceans. | | Source: | PubMed, pmid11884752 doi: 10.1126/science.1065998 | | Services: | Forum | Review | Favorites | |
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