Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/42930

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Title
Les isotopes stables de l'oxygene et du carbone dans les speleothemes: des archives paleoenvironnementales
Author/Creator
Couchoud, Isabelle
Institution
The University of Newcastle. Faculty of Science & Information Technology, School of Environmental and Life Sciences
Description
Speleothems are regarded as major palaeoclimate and palaeoenvironmental archives, notably because of their records of oxygen and carbon isotopic variations, which arc constrained in a reliable chronological framework with U-series dating. Increasingly studied, these isotopic signals are, however, complex and their interpretation must be based on a good knowledge of the isotopic fractionation conditions during calcite precipitation and of the context of speleothem formation. This paper presents a bibliographic review of the use of speleothem stable isotopes in palaeoclimate and palaeoenvironmental reconstruction. The physico-chemical processes that combine to determine the isotopic composition of the precipitated calcite arc first presented. Then, the limits and uncertainties associated with the interpretation of these isotopic signals are discussed, along with the means by which to identify isotope signal disturbances.
Relation
Quaternaire Vol. 19, Issue 4, p. 275-291
Relation
http://quaternaire.revues.org/index4532.html
Date
2008
Publisher
Centre National de la Recherche Scientifique
Keyword(s)
stable isotopes;  oxygen;  carbon;  speleothems;  palaeoenvironment;  archive
Resource Type
journal article
Identifier
http://hdl.handle.net/1959.13/42930
Identifier
ISSN:1142-2904
Reviewed
Reviewed
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Subject
"Quaternaire"
 
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