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Large iron isotope fractionation at the oxic-anoxic boundary in Lake Nyos

Abstract:

The degassing of volcanic Lake Nyos (Cameroon) provides the opportunity to study the strong isotopic variation of dissolved Fe(II) in a well constrained redox cycle and to identify the governing processes by reaction-transport modeling. Two depth profiles sampled in the lake in March 2004 and 2005 reveal an increase in iron concentrations and δ57Fe from around 1 mg L- 1 and - 1.88‰ at 55 m depth up to 344 mg L- 1 and + 0.83‰ at the bottom of the lake, respectively. A steep increase in δ57Fe w...

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Publication status:
Published

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Publisher copy:
10.1016/j.epsl.2009.05.044

Authors


Teutsch, N More by this author
Mueller, B More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Earth Sciences
Buergmann, H More by this author
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Journal:
EARTH AND PLANETARY SCIENCE LETTERS
Volume:
285
Issue:
1-2
Pages:
52-60
Publication date:
2009-07-30
DOI:
ISSN:
0012-821X
URN:
uuid:9b75eb12-f741-4dd7-a477-0464fd2d05c7
Source identifiers:
83035
Local pid:
pubs:83035
Language:
English
Keywords:

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