Late Cretaceous (late Campanian–Maastrichtian) sea-surface temperature record of the Boreal Chalk Sea
The last 8 Myr of the Cretaceous greenhouse interval were characterized by a progressive global cooling with superimposed cool/warm fluctuations. The mechanisms responsible for these climatic fluctuations remain a source of debate that can only be resolved through multi-disciplinary studies and bett...
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fttriple:oai:gotriple.eu:oai:doaj.org/article:0271d9a8d81d4392a6ff0ca48db869a6 2023-05-15T17:33:47+02:00 Late Cretaceous (late Campanian–Maastrichtian) sea-surface temperature record of the Boreal Chalk Sea N. Thibault R. Harlou N. H. Schovsbo L. Stemmerik F. Surlyk 2016-02-01 https://doi.org/10.5194/cp-12-429-2016 http://www.clim-past.net/12/429/2016/cp-12-429-2016.pdf https://doaj.org/article/0271d9a8d81d4392a6ff0ca48db869a6 en eng Copernicus Publications 1814-9324 1814-9332 doi:10.5194/cp-12-429-2016 http://www.clim-past.net/12/429/2016/cp-12-429-2016.pdf https://doaj.org/article/0271d9a8d81d4392a6ff0ca48db869a6 undefined Climate of the Past, Vol 12, Iss 2, Pp 429-438 (2016) geo archeo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2016 fttriple https://doi.org/10.5194/cp-12-429-2016 2023-01-22T17:51:29Z The last 8 Myr of the Cretaceous greenhouse interval were characterized by a progressive global cooling with superimposed cool/warm fluctuations. The mechanisms responsible for these climatic fluctuations remain a source of debate that can only be resolved through multi-disciplinary studies and better time constraints. For the first time, we present a record of very high-resolution (ca. 4.5 kyr) sea-surface temperature (SST) changes from the Boreal epicontinental Chalk Sea (Stevns-1 core, Denmark), tied to an astronomical timescale of the late Campanian–Maastrichtian (74 to 66 Ma). Well-preserved bulk stable isotope trends and calcareous nannofossil palaeoecological patterns from the fully cored Stevns-1 borehole show marked changes in SSTs. These variations correlate with deep-water records of climate change from the tropical South Atlantic and Pacific oceans but differ greatly from the climate variations of the North Atlantic. We demonstrate that the onset and end of the early Maastrichtian cooling and of the large negative Campanian–Maastrichtian boundary carbon isotope excursion are coincident in the Chalk Sea. The direct link between SSTs and δ13C variations in the Chalk Sea reassesses long-term glacio-eustasy as the potential driver of carbon isotope and climatic variations in the Maastrichtian. Article in Journal/Newspaper North Atlantic Unknown Pacific Climate of the Past 12 2 429 438 |
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English |
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geo archeo |
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geo archeo N. Thibault R. Harlou N. H. Schovsbo L. Stemmerik F. Surlyk Late Cretaceous (late Campanian–Maastrichtian) sea-surface temperature record of the Boreal Chalk Sea |
topic_facet |
geo archeo |
description |
The last 8 Myr of the Cretaceous greenhouse interval were characterized by a progressive global cooling with superimposed cool/warm fluctuations. The mechanisms responsible for these climatic fluctuations remain a source of debate that can only be resolved through multi-disciplinary studies and better time constraints. For the first time, we present a record of very high-resolution (ca. 4.5 kyr) sea-surface temperature (SST) changes from the Boreal epicontinental Chalk Sea (Stevns-1 core, Denmark), tied to an astronomical timescale of the late Campanian–Maastrichtian (74 to 66 Ma). Well-preserved bulk stable isotope trends and calcareous nannofossil palaeoecological patterns from the fully cored Stevns-1 borehole show marked changes in SSTs. These variations correlate with deep-water records of climate change from the tropical South Atlantic and Pacific oceans but differ greatly from the climate variations of the North Atlantic. We demonstrate that the onset and end of the early Maastrichtian cooling and of the large negative Campanian–Maastrichtian boundary carbon isotope excursion are coincident in the Chalk Sea. The direct link between SSTs and δ13C variations in the Chalk Sea reassesses long-term glacio-eustasy as the potential driver of carbon isotope and climatic variations in the Maastrichtian. |
format |
Article in Journal/Newspaper |
author |
N. Thibault R. Harlou N. H. Schovsbo L. Stemmerik F. Surlyk |
author_facet |
N. Thibault R. Harlou N. H. Schovsbo L. Stemmerik F. Surlyk |
author_sort |
N. Thibault |
title |
Late Cretaceous (late Campanian–Maastrichtian) sea-surface temperature record of the Boreal Chalk Sea |
title_short |
Late Cretaceous (late Campanian–Maastrichtian) sea-surface temperature record of the Boreal Chalk Sea |
title_full |
Late Cretaceous (late Campanian–Maastrichtian) sea-surface temperature record of the Boreal Chalk Sea |
title_fullStr |
Late Cretaceous (late Campanian–Maastrichtian) sea-surface temperature record of the Boreal Chalk Sea |
title_full_unstemmed |
Late Cretaceous (late Campanian–Maastrichtian) sea-surface temperature record of the Boreal Chalk Sea |
title_sort |
late cretaceous (late campanian–maastrichtian) sea-surface temperature record of the boreal chalk sea |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/cp-12-429-2016 http://www.clim-past.net/12/429/2016/cp-12-429-2016.pdf https://doaj.org/article/0271d9a8d81d4392a6ff0ca48db869a6 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Climate of the Past, Vol 12, Iss 2, Pp 429-438 (2016) |
op_relation |
1814-9324 1814-9332 doi:10.5194/cp-12-429-2016 http://www.clim-past.net/12/429/2016/cp-12-429-2016.pdf https://doaj.org/article/0271d9a8d81d4392a6ff0ca48db869a6 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/cp-12-429-2016 |
container_title |
Climate of the Past |
container_volume |
12 |
container_issue |
2 |
container_start_page |
429 |
op_container_end_page |
438 |
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1766132408958058496 |