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The lithium isotopic composition of orogenic eclogites and deep subducted slabs

Abstract:

We have modelled the Li budget of subducting oceanic crust during dehydration, using recently established input parameters. The results show that the entire prograde metamorphic process, up to anhydrous eclogite, can account for a decrease in δ7Li of only ≤ 3‰. Given that altered, oceanic crust entering the subduction zone should have Li isotopic compositions between - 3 and + 14‰, dehydration cannot account for markedly light Li isotopic compositions (δ7Li < 0 to - 10‰) previously measure...

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Publication status:
Published

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Publisher copy:
10.1016/j.epsl.2007.08.005
Journal:
EARTH AND PLANETARY SCIENCE LETTERS More from this journal
Volume:
262
Issue:
3-4
Pages:
563-580
Publication date:
2007-10-30
DOI:
ISSN:
0012-821X
Language:
English
Keywords:
Pubs id:
pubs:220854
UUID:
uuid:6b25cde1-37df-4c7f-b5d1-c65b3c08d79e
Local pid:
pubs:220854
Source identifiers:
220854
Deposit date:
2012-12-19

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