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Rhenium-osmium isotope and elemental behaviour during subduction of oceanic crust and the implications for mantle recycling

Abstract:

This study presents major-, trace-element, and rhenium-osmium (Re-Os) isotope and elemental data for basalts and gabbros from the Zermatt-Saas ophiolite, metamorphosed to eclogite-facies conditions during the Alpine orogeny. Igneous crystallisation of the gabbros occurred at 163.5 ± 1.8 Ma and both gabbro and basalt were subject to 'peak' pressure-temperature (P-T) conditions of > 2.0 GPa and ~ 600 °C at about 40.6 ± 2.6 Ma. Despite such extreme P-T conditions, Re-Os isotope and abundance ...

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Publication status:
Published

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Publisher copy:
10.1016/j.epsl.2006.10.029

Authors


Gannoun, A More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Earth Sciences
Argles, TW More by this author
Parkinson, IJ More by this author
Journal:
EARTH AND PLANETARY SCIENCE LETTERS
Volume:
253
Issue:
1-2
Pages:
211-225
Publication date:
2007-01-15
DOI:
ISSN:
0012-821X
URN:
uuid:3fb67e89-aed8-407c-b66b-e8993325b6e2
Source identifiers:
152072
Local pid:
pubs:152072

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