dc.contributor.author | Korte, C | |
dc.contributor.author | Hesselbo, Stephen P. | |
dc.contributor.author | Ullmann, CV | |
dc.contributor.author | Dietl, G | |
dc.contributor.author | Ruhl, M | |
dc.contributor.author | Schweigert, G | |
dc.contributor.author | Thibault, N | |
dc.date.accessioned | 2015-12-11T15:37:53Z | |
dc.date.issued | 2015-12-11 | |
dc.description.abstract | The Jurassic (~201–145 Myr ago) was long considered a warm ‘greenhouse’ period; more recently cool, even ‘icehouse’ episodes have been postulated. However, the mechanisms governing transition between so-called Warm Modes and Cool Modes are poorly known. Here we present a new large high-quality oxygen-isotope dataset from an interval that includes previously suggested mode transitions. Our results show an especially abrupt earliest Middle Jurassic (~174 Ma) mid-latitude cooling of seawater by as much as 10 °C in the north–south Laurasian Seaway, a marine passage that connected the equatorial Tethys Ocean to the Boreal Sea. Coincidence in timing with large-scale regional lithospheric updoming of the North Sea region is striking, and we hypothesize that northward oceanic heat transport was impeded by uplift, triggering Cool Mode conditions more widely. This extreme climate-mode transition provides a counter-example to other Mesozoic transitions linked to quantitative change in atmospheric greenhouse gas content. | en_GB |
dc.description.sponsorship | Danish Council for Independent Research – Natural Sciences | en_GB |
dc.description.sponsorship | Carlsberg Foundation | en_GB |
dc.identifier.citation | Vol. 6, Article number 10015. | en_GB |
dc.identifier.doi | 10.1038/ncomms10015 | |
dc.identifier.grantnumber | 09-072715 | en_GB |
dc.identifier.grantnumber | 2011-01-0737 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/18949 | |
dc.language.iso | en | en_GB |
dc.publisher | Nature Publishing Group | en_GB |
dc.relation.url | http://www.nature.com/ncomms/2015/151211/ncomms10015/full/ncomms10015.html | en_GB |
dc.rights | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ | en_GB |
dc.subject | Earth Sciences | en_GB |
dc.subject | Climate Sciences | en_GB |
dc.subject | Oceanography | en_GB |
dc.title | Jurassic climate mode governed by ocean gateway | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2015-12-11T15:37:53Z | |
dc.description | Published | en_GB |
dc.description | Article | en_GB |
dc.description | Open Access Article | en_GB |
dc.identifier.eissn | 2041-1723 | |
dc.identifier.journal | Nature Communications | en_GB |