Raman spectroscopic studies of hydrous and nominally anhydrous deep mantle phases

Annette K. Kleppe, Andrew P. Jephcoat

Research output: Chapter in Book/Report/Conference proceedingChapter

5 Citations (Scopus)

Abstract

This chapter deals with Raman spectroscopic measurements on both hydrous and nominally anhydrous silicates that are relevant to water cycling and storage in the Earth’s mantle. Raman spectroscopy is a sensitive tool for probing structure and chemistry of silicates. It is particularly useful in the identification of OH and H2O in minerals and in the discrimination between structurally similar phases. Here we present a collection of room-pressure and -temperature Raman spectra and structure models followed by low-temperature Raman spectra of lawsonite, the only known phase containing molecular water groups that is stable below ~150 km depth. We compare the behavior of the Raman active OH stretching frequencies in chlorite across the pressure-induced transition at 9-10 GPa with the results of first-principles calculations, and we also present high-pressure Raman spectroscopic studies of transition zone silicate spinelloids and spinel. The latter studies show that the incorporation of iron (Fe2+) into hydrous wadsleyite and ringwoodite may allow resonance electronic Raman scattering processes.

Original languageEnglish
Title of host publicationEarth?s Deep Water Cycle, 2006
PublisherBlackwell Publishing Ltd
Pages69-93
Number of pages25
Volume168
ISBN (Electronic)9781118666487
ISBN (Print)9780875904337
DOIs
Publication statusPublished - Jan 1 2006

Publication series

NameGeophysical Monograph Series
Volume168
ISSN (Print)0065-8448
ISSN (Electronic)2328-8779

Fingerprint

silicates
Earth mantle
silicate
Raman spectra
mantle
wadsleyite
ringwoodite
lawsonite
Raman spectroscopy
spinel
transition zone
water
rooms
chlorite
discrimination
scattering
minerals
chemistry
iron
cycles

ASJC Scopus subject areas

  • Geophysics

Cite this

Kleppe, A. K., & Jephcoat, A. P. (2006). Raman spectroscopic studies of hydrous and nominally anhydrous deep mantle phases. In Earth?s Deep Water Cycle, 2006 (Vol. 168, pp. 69-93). (Geophysical Monograph Series; Vol. 168). Blackwell Publishing Ltd. https://doi.org/10.1029/168GM07

Raman spectroscopic studies of hydrous and nominally anhydrous deep mantle phases. / Kleppe, Annette K.; Jephcoat, Andrew P.

Earth?s Deep Water Cycle, 2006. Vol. 168 Blackwell Publishing Ltd, 2006. p. 69-93 (Geophysical Monograph Series; Vol. 168).

Research output: Chapter in Book/Report/Conference proceedingChapter

Kleppe, AK & Jephcoat, AP 2006, Raman spectroscopic studies of hydrous and nominally anhydrous deep mantle phases. in Earth?s Deep Water Cycle, 2006. vol. 168, Geophysical Monograph Series, vol. 168, Blackwell Publishing Ltd, pp. 69-93. https://doi.org/10.1029/168GM07
Kleppe AK, Jephcoat AP. Raman spectroscopic studies of hydrous and nominally anhydrous deep mantle phases. In Earth?s Deep Water Cycle, 2006. Vol. 168. Blackwell Publishing Ltd. 2006. p. 69-93. (Geophysical Monograph Series). https://doi.org/10.1029/168GM07
Kleppe, Annette K. ; Jephcoat, Andrew P. / Raman spectroscopic studies of hydrous and nominally anhydrous deep mantle phases. Earth?s Deep Water Cycle, 2006. Vol. 168 Blackwell Publishing Ltd, 2006. pp. 69-93 (Geophysical Monograph Series).
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