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Unravelling the effects of melt depletion and secondary infiltration on mantle Re-Os isotopes beneath the French Massif Central

Abstract:

Spinel lherzolite xenoliths from Mont Briançon, French Massif Central, retain evidence for multiple episodes of melt depletion and melt/fluid infiltration (metasomatism). Evidence for primary melt depletion is still preserved in the co-variation of bulk-rock major elements (MgO 38.7-46.1 wt.%; CaO 0.9-3.6 wt.%), and many samples yield unradiogenic bulk-rock Os isotope ratios (187Os/188Os = 0.11541-0.12626). However, many individual xenoliths contain interstitial glasses and melt inclusions th...

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Publication status:
Published

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Publisher copy:
10.1016/j.gca.2009.09.031

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Institution:
University of Oxford
Division:
MPLS
Department:
Earth Sciences
Role:
Author
Journal:
GEOCHIMICA ET COSMOCHIMICA ACTA More from this journal
Volume:
74
Issue:
1
Pages:
293-320
Publication date:
2010-01-01
DOI:
ISSN:
0016-7037
Language:
English
Pubs id:
pubs:83031
UUID:
uuid:f7a4fa9b-b543-4d37-ad3e-619baa5c81d1
Local pid:
pubs:83031
Source identifiers:
83031
Deposit date:
2012-12-19

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