Three water sites in upper mantle olivine and the role of titanium in the water weakening mechanism

  title={Three water sites in upper mantle olivine and the role of titanium in the water weakening mechanism},
  author={Andrew M. Walker and Jan Hermann and Andrew J. Berry and Hugh St. C. O’Neill},
[1] Infrared spectroscopy on synthetic olivines has established that there are at least four different mechanisms by which hydrogen is incorporated into the crystal structure. Two mechanisms occur in the system MgO-SiO2-H2O associated with silicon and magnesium vacancies, respectively. A third mechanism is associated with trivalent cation substitution, commonly Fe in natural olivine, while the fourth mechanism, which is the one most prevalent in natural olivines from the spinel-peridotite… CONTINUE READING
6 Citations
52 References
Similar Papers


Publications referenced by this paper.
Showing 1-10 of 52 references

A theoretical study of the energetics and IR frequencies of hydroxyl defects in forsterite

  • J. S. Braithwaite, K. Wright, C.R.A. Catlow
  • J. Geophys. Res.,
  • 2003
Highly Influential
9 Excerpts

Activation volume of silicon diffusion in San Carlos olivine

  • F. Béjina, P. Raterron, J. Zhang, O. Jaoul, R. C. Liebermann
  • Geophys. Res. Lett.,
  • 1997
Highly Influential
4 Excerpts

Solubility of water in the alpha, beta and gamma phases

  • D. L. Kohlstedt, H. Keppler, D. C. Rubie
  • 1996
Highly Influential
5 Excerpts

Fast diffusion of Si and O in San Carlos olivine under hydros conditions, Geochim

  • S. Chakraborty, F. Costa
  • Cosmochim. Acta,
  • 2004
Highly Influential
3 Excerpts

The effect of silica activity on the incorporation mechanisms of water in synthetic forsterite: A polarized infrared spectroscopic study, Contrib

  • C. Lemaire, S. C. Kohn, R. A. Brooker
  • Mineral. Petrol.,
  • 2004
Highly Influential
6 Excerpts

Effect of silica activity on OH - IR spectra of olivine : implications for low - aSiO 2 mantle metasomatism

  • S. Matveev, M. Potnyagin, C. Ballhaus, R. A. Brooker, C. A. Geiger
  • J . Petrol .
  • 2001
Highly Influential
4 Excerpts

An ab initio study of hydrogen in forsterite and a possible mechanism for hydrolytic weakening

  • J. P. Brodholt
  • Refson
  • 2000
Highly Influential
2 Excerpts

A computer simulation study of (OH) defects in olivine

  • K. Wright, C.R.A. Catlow
  • Phys. Chem. Miner.,
  • 1994
Highly Influential
4 Excerpts

Titanium substitution mechanisms

  • A. J. Berry, A. M. Walker, J. Hermann, H. St. C. O’Neill, G. J. Foran, J. D. Gale
  • 2007
2 Excerpts

Similar Papers

Loading similar papers…