The carbon-isotope shift at the Permian/ Triassic boundary in the southern Alps is gradual

Détails

ID Serval
serval:BIB_8F470B7DFC8C
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
The carbon-isotope shift at the Permian/ Triassic boundary in the southern Alps is gradual
Périodique
Nature
Auteur(s)
Magaritz M., Bär R., Baud A., Holzer W.T.
ISSN
0028-0836
Statut éditorial
Publié
Date de publication
1988
Peer-reviewed
Oui
Volume
331
Pages
337-339
Langue
anglais
Résumé
Carbon isotope ratios in marine carbonate rocks have been shown to shift at some of the time boundaries associated with extinction events; for example, Cretaceous/Tertiary and Ordovician/ Silurian. The Permian/Triassic boundary, the greatest extinction event of the Phanerozoic, is also marked by a large d13C depletion. New carbon isotope results from sections in the southern Alps show that this depletion did not actually represent a single event, but was a complex change that spanned perhaps a million years during the late Permian and early Triassic. These results suggest that the Permian/Triassic (P/Tr) extinction may have been in part gradual and in part 'stepwise', but was not in any case a single catastrophic event.
Mots-clé
carbon isotope, P/T boundary, marine carbonates
Web of science
Création de la notice
20/02/2009 19:04
Dernière modification de la notice
20/08/2019 14:52
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