Integrated bio-chemostratigraphical correlations and climatic evolution across the Danian–Selandian boundary at low latitudes
The Global Boundary Stratotype Section and Point for the base of the Selandian Stage is defined in the Zumaia section (Spain) at an abrupt change in lithology (base of Itzurun Formation), which coincides with the onset of a negative carbonate carbon isotope shift. However, this lithological change i...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Online Access: | https://lirias.kuleuven.be/handle/123456789/484042 https://doi.org/10.1016/j.palaeo.2014.09.002 |
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ftunivleuven:oai:lirias.kuleuven.be:123456789/484042 2023-05-15T17:37:01+02:00 Integrated bio-chemostratigraphical correlations and climatic evolution across the Danian–Selandian boundary at low latitudes Storme, Jean-Yves Steurbaut, Etienne Devleeshouwer, Xavier Dupuis, Christian Iacumin, Paola Rochez, Gaëtan Yans, Johan 2014-09-16 https://lirias.kuleuven.be/handle/123456789/484042 https://doi.org/10.1016/j.palaeo.2014.09.002 en eng Elsevier Palaeogeography, Palaeoclimatology, Palaeoecology vol:414 pages:212-224 https://lirias.kuleuven.be/handle/123456789/484042 0031-0182 doi:10.1016/j.palaeo.2014.09.002 1872-616X Description (Metadata) only IT article 2014 ftunivleuven https://doi.org/10.1016/j.palaeo.2014.09.002 2015-12-22T16:52:59Z The Global Boundary Stratotype Section and Point for the base of the Selandian Stage is defined in the Zumaia section (Spain) at an abrupt change in lithology (base of Itzurun Formation), which coincides with the onset of a negative carbonate carbon isotope shift. However, this lithological change is not always very well expressed in other sections. In order to document the stratigraphic position of the Danian/Selandian boundary (DSB) on a more global scale, we have investigated three sections across the DSB, the Zumaia reference section (GSSP), the Loubieng section (auxiliary DSB reference section, France) and the Sidi Nasseur section (Tunisia). The Danian/Selandian boundary interval is subdivided and correlated throughout low latitudes, from the Altlantic Bay of Biscay to the Southern Tethys, on the basis of seven calcareous nannofossil and planktonic foraminiferal events (E-events). The base of the Selandian is proved to coincide with the end of the Braarudosphaera acme, which correlates with the lowest consistent occurrence (LCsO) of Lithoptychius aff. bitectus (=Fasciculithus janii sensu Steurbaut and Sztrákos, 2008) (event E4), but which is slightly posterior to the second radiation of the fasciculiths, up to now considered to represent the primary correlation tool of the DSB. A short-term δ13Corg negative excursion, associated with an increase in pCO2 is recorded at the very base of the Selandian. It is interpreted as a short period of global warming (hyperthermal), the duration of which is estimated at ~30 kyr. It is followed in all the three studied sections by a long-term decoupled carbon isotope event, marked by increasing δ13Corg and decreasing δ13Ccarb values. It may reflect a period of climatic cooling of a few 100 kyr, interpreted as a possible precursor of the global cooling event, marking the late Paleocene in the North Atlantic realm. The integration of the biostratigraphic and the isotope data indicates major differences in sedimentation rates during the early Selandian in the studied sections, but there is no evidence of substantial breaks in sedimentation in any of the sections during this interval. The lithological shift at the base of the Selandian points to an abrupt palaeoenvironmental reorganisation, although our integrated bio-chemostratigraphical investigation does not allow for estimating its duration nor the presence of a hiatus at that time. status: published Article in Journal/Newspaper North Atlantic KU Leuven: Lirias Palaeogeography, Palaeoclimatology, Palaeoecology 414 212 224 |
institution |
Open Polar |
collection |
KU Leuven: Lirias |
op_collection_id |
ftunivleuven |
language |
English |
description |
The Global Boundary Stratotype Section and Point for the base of the Selandian Stage is defined in the Zumaia section (Spain) at an abrupt change in lithology (base of Itzurun Formation), which coincides with the onset of a negative carbonate carbon isotope shift. However, this lithological change is not always very well expressed in other sections. In order to document the stratigraphic position of the Danian/Selandian boundary (DSB) on a more global scale, we have investigated three sections across the DSB, the Zumaia reference section (GSSP), the Loubieng section (auxiliary DSB reference section, France) and the Sidi Nasseur section (Tunisia). The Danian/Selandian boundary interval is subdivided and correlated throughout low latitudes, from the Altlantic Bay of Biscay to the Southern Tethys, on the basis of seven calcareous nannofossil and planktonic foraminiferal events (E-events). The base of the Selandian is proved to coincide with the end of the Braarudosphaera acme, which correlates with the lowest consistent occurrence (LCsO) of Lithoptychius aff. bitectus (=Fasciculithus janii sensu Steurbaut and Sztrákos, 2008) (event E4), but which is slightly posterior to the second radiation of the fasciculiths, up to now considered to represent the primary correlation tool of the DSB. A short-term δ13Corg negative excursion, associated with an increase in pCO2 is recorded at the very base of the Selandian. It is interpreted as a short period of global warming (hyperthermal), the duration of which is estimated at ~30 kyr. It is followed in all the three studied sections by a long-term decoupled carbon isotope event, marked by increasing δ13Corg and decreasing δ13Ccarb values. It may reflect a period of climatic cooling of a few 100 kyr, interpreted as a possible precursor of the global cooling event, marking the late Paleocene in the North Atlantic realm. The integration of the biostratigraphic and the isotope data indicates major differences in sedimentation rates during the early Selandian in the studied sections, but there is no evidence of substantial breaks in sedimentation in any of the sections during this interval. The lithological shift at the base of the Selandian points to an abrupt palaeoenvironmental reorganisation, although our integrated bio-chemostratigraphical investigation does not allow for estimating its duration nor the presence of a hiatus at that time. status: published |
format |
Article in Journal/Newspaper |
author |
Storme, Jean-Yves Steurbaut, Etienne Devleeshouwer, Xavier Dupuis, Christian Iacumin, Paola Rochez, Gaëtan Yans, Johan |
spellingShingle |
Storme, Jean-Yves Steurbaut, Etienne Devleeshouwer, Xavier Dupuis, Christian Iacumin, Paola Rochez, Gaëtan Yans, Johan Integrated bio-chemostratigraphical correlations and climatic evolution across the Danian–Selandian boundary at low latitudes |
author_facet |
Storme, Jean-Yves Steurbaut, Etienne Devleeshouwer, Xavier Dupuis, Christian Iacumin, Paola Rochez, Gaëtan Yans, Johan |
author_sort |
Storme, Jean-Yves |
title |
Integrated bio-chemostratigraphical correlations and climatic evolution across the Danian–Selandian boundary at low latitudes |
title_short |
Integrated bio-chemostratigraphical correlations and climatic evolution across the Danian–Selandian boundary at low latitudes |
title_full |
Integrated bio-chemostratigraphical correlations and climatic evolution across the Danian–Selandian boundary at low latitudes |
title_fullStr |
Integrated bio-chemostratigraphical correlations and climatic evolution across the Danian–Selandian boundary at low latitudes |
title_full_unstemmed |
Integrated bio-chemostratigraphical correlations and climatic evolution across the Danian–Selandian boundary at low latitudes |
title_sort |
integrated bio-chemostratigraphical correlations and climatic evolution across the danian–selandian boundary at low latitudes |
publisher |
Elsevier |
publishDate |
2014 |
url |
https://lirias.kuleuven.be/handle/123456789/484042 https://doi.org/10.1016/j.palaeo.2014.09.002 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Palaeogeography, Palaeoclimatology, Palaeoecology vol:414 pages:212-224 https://lirias.kuleuven.be/handle/123456789/484042 0031-0182 doi:10.1016/j.palaeo.2014.09.002 1872-616X |
op_doi |
https://doi.org/10.1016/j.palaeo.2014.09.002 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
414 |
container_start_page |
212 |
op_container_end_page |
224 |
_version_ |
1766136706719809536 |