Contribution of IR spectroscopy to the problem of water in the Earth's mantle

Autor(en)

Anton Beran

Abstrakt

The close packed structures of nominally anhyd. mineral phases, likely to be present within the Earth's mantle (olivines, pyroxenes, garnets, and MgSiO3 perovskite), may offer important storage sites for H and these trace H-bearing phases may strongly influence the phys. properties of the Earth's mantle. IR spectroscopy provides an extremely sensitive method for detecting trace H bonded to O. Using polarized radiation, the pleochroic scheme of OH absorption bands measured on oriented crystal sections allows to impose defined constraints on the orientation of OH dipoles in the structure. A attempts were made to calibrate the IR spectra with independent abs. methods.

Organisation(en)

Institut für Mineralogie und Kristallographie

Seiten

523-538

Anzahl der Seiten

16

Publikationsdatum

1999

Peer-reviewed

Ja

ÖFOS 2012

105116 Mineralogie, 104026 Spektroskopie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/45f8ed58-daa3-44a6-be05-7b36adb83cf1