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Details van artikel 63 van 83 gevonden artikelen
| Titel: |
Permian-triassic carbon-isotope anomaly in Greenland and in the southern Alps |
| Auteur: |
Oberhansli, H. Hsu, K. J. Piasecki, S. Weissert, H. |
| Verschenen in: |
Historical biology |
| Paginering: | Jaargang 2 (1989) nr. 1 pagina's 37-49 |
| Jaar: |
1989 |
| Inhoud: |
A carbon isotopic study of selected samples of apparently continuous Permian-Triassic boundary sections from Jameson Land (Greenland) and from the Southern Alps (Italy) revealed a negative δ1 3C shift by 2-3‰. In the Greenland record the geochemical event is possibly isochronous with the δl 3C shift reported from other localities, where it occurs in the latest Permian. In the section studied from Northern Italy, the event is slightly younger and straddles the Permian-Triassic boundary. The δ1 3C change occurred within a few hundred thousand years, but within less than a million years. The worldwide recorded carbon isotopic event documents a change in the global carbon cycle. We suggest that the δ1 3 C decrease reflects a reduction in the transfer of organic matter from the production sites (oceans and continents) to the sedimentary reservoir. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 63 van 83 gevonden artikelen
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