Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
Differential response at the seafloor during Palaeocene and Eocene ocean warming events at Walvis Ridge, Atlantic Ocean (ODP Site 1262)
Deprez, A.; Jehle, S.; Bornemann, A.; Speijer, R.P. (2017). Differential response at the seafloor during Palaeocene and Eocene ocean warming events at Walvis Ridge, Atlantic Ocean (ODP Site 1262). Terra nova (Print) 29(1): 71-76. https://dx.doi.org/10.1111/ter.12250
In: Terra Nova. Blackwell: Oxford. ISSN 0954-4879; e-ISSN 1365-3121, meer
|   |
| Auteurs | | Top |
- Deprez, A., meer
- Jehle, S.
- Bornemann, A.
- Speijer, R.P., meer
|
|
|
| Abstract |
The Latest Danian Event (LDE, c. 62.1 Ma) is an early Palaeogene hyperthermal or transient (<200 ka) ocean warming event. We present the first deep-sea benthic foraminiferal faunal record to study deep-sea biotic changes together with new benthic (Nuttallides truempyi) stable isotope data from Walvis Ridge Site 1262 (Atlantic Ocean) to evaluate whether the LDE was controlled by similar processes as the minor early Eocene hyperthermals. The spacing of the double negative δ13C and δ18O excursion and the slope of the δ18O–δ13C regression are comparable, strongly suggesting a similar orbital control and pacing of eccentricity maxima as well as a rather homogeneous carbon pool. However, in contrast to early Eocene hyperthermals, the LDE exhibits a remarkable stability of the benthic foraminiferal fauna. This lack of benthic response could be related to the absence of threshold-related circulation changes or better pre-adaptation to elevated deep-sea temperatures, as the LDE was superimposed on a cooling trend, in contrast to early Eocene warming. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
