Late Cenomanian Plenus event in the Western Interior Seaway
The Late Cenomanian Plenus Cold Event is one of the most enigmatic paleoclimate episodes in Earth history with potential to inform understanding of global climate system variability under greenhouse warming conditions, as well as internal feedback pathways that modulate such variability. Following a...
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2024
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Online Access: | https://epic.awi.de/id/eprint/59219/ https://epic.awi.de/id/eprint/59219/1/Sageman_etal.2023.clean.pdf https://doi.org/10.1016/j.cretres.2023.105798 https://hdl.handle.net/10013/epic.0f070398-371e-4d38-9ad6-68a51dff47c1 |
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ftawi:oai:epic.awi.de:59219 2024-09-30T14:43:11+00:00 Late Cenomanian Plenus event in the Western Interior Seaway Sageman, Bradley B Jones, Matthew M Arthur, Michael A Niezgodzki, Igor Horton, Daniel E 2024-04 application/pdf https://epic.awi.de/id/eprint/59219/ https://epic.awi.de/id/eprint/59219/1/Sageman_etal.2023.clean.pdf https://doi.org/10.1016/j.cretres.2023.105798 https://hdl.handle.net/10013/epic.0f070398-371e-4d38-9ad6-68a51dff47c1 unknown Elsevier https://epic.awi.de/id/eprint/59219/1/Sageman_etal.2023.clean.pdf Sageman, B. B. , Jones, M. M. , Arthur, M. A. , Niezgodzki, I. orcid:0000-0002-6746-8332 and Horton, D. E. (2024) Late Cenomanian Plenus event in the Western Interior Seaway , Cretaceous Research, 156 , p. 105798 . doi:10.1016/j.cretres.2023.105798 <https://doi.org/10.1016/j.cretres.2023.105798> , hdl:10013/epic.0f070398-371e-4d38-9ad6-68a51dff47c1 EPIC3Cretaceous Research, Elsevier, 156, pp. 105798-105798, ISSN: 0195-6671 Article isiRev 2024 ftawi https://doi.org/10.1016/j.cretres.2023.105798 2024-09-17T14:21:57Z The Late Cenomanian Plenus Cold Event is one of the most enigmatic paleoclimate episodes in Earth history with potential to inform understanding of global climate system variability under greenhouse warming conditions, as well as internal feedback pathways that modulate such variability. Following an interpreted massive addition of volcanic CO2 to the atmosphere and warming that led to a major ocean anoxic event (OAE2), there was a brief interval of cooling recorded in oxygen isotopes and biogeographic data. Here we present evidence that cooling was absent or muted within the Western Interior Seaway (WIS). Clumped isotope data from the basin suggest persistent extreme warmth during the Late Cenomanian, macroinvertebrate fossil assemblages do not record a decrease in temperature, and changes in other paleoceanographic proxies do not correlate temporally with Plenus interval signals from other locales. Using select proxy data to guide construction of GCM model simulations, we explore possible hypotheses to explain these observations. Our results suggest that the paleogeographic configuration of the basin and its gateways to adjoining oceans, which evolved in association with changing pCO2 and sea level, influenced winter sea ice formation at the northern aperture of the seaway, water mass circulation, salinity, temperature, and water column stratification. We propose that northward advection of warm Tethyan water muted expression of Plenus cooling in the seaway. Understanding the unique character of the Western Interior paleoceanographic record provides critical input for the development of robust models of ancient Earth System dynamics and should aid predictions of future climate system dynamics. Article in Journal/Newspaper Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Cretaceous Research 156 105798 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
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description |
The Late Cenomanian Plenus Cold Event is one of the most enigmatic paleoclimate episodes in Earth history with potential to inform understanding of global climate system variability under greenhouse warming conditions, as well as internal feedback pathways that modulate such variability. Following an interpreted massive addition of volcanic CO2 to the atmosphere and warming that led to a major ocean anoxic event (OAE2), there was a brief interval of cooling recorded in oxygen isotopes and biogeographic data. Here we present evidence that cooling was absent or muted within the Western Interior Seaway (WIS). Clumped isotope data from the basin suggest persistent extreme warmth during the Late Cenomanian, macroinvertebrate fossil assemblages do not record a decrease in temperature, and changes in other paleoceanographic proxies do not correlate temporally with Plenus interval signals from other locales. Using select proxy data to guide construction of GCM model simulations, we explore possible hypotheses to explain these observations. Our results suggest that the paleogeographic configuration of the basin and its gateways to adjoining oceans, which evolved in association with changing pCO2 and sea level, influenced winter sea ice formation at the northern aperture of the seaway, water mass circulation, salinity, temperature, and water column stratification. We propose that northward advection of warm Tethyan water muted expression of Plenus cooling in the seaway. Understanding the unique character of the Western Interior paleoceanographic record provides critical input for the development of robust models of ancient Earth System dynamics and should aid predictions of future climate system dynamics. |
format |
Article in Journal/Newspaper |
author |
Sageman, Bradley B Jones, Matthew M Arthur, Michael A Niezgodzki, Igor Horton, Daniel E |
spellingShingle |
Sageman, Bradley B Jones, Matthew M Arthur, Michael A Niezgodzki, Igor Horton, Daniel E Late Cenomanian Plenus event in the Western Interior Seaway |
author_facet |
Sageman, Bradley B Jones, Matthew M Arthur, Michael A Niezgodzki, Igor Horton, Daniel E |
author_sort |
Sageman, Bradley B |
title |
Late Cenomanian Plenus event in the Western Interior Seaway |
title_short |
Late Cenomanian Plenus event in the Western Interior Seaway |
title_full |
Late Cenomanian Plenus event in the Western Interior Seaway |
title_fullStr |
Late Cenomanian Plenus event in the Western Interior Seaway |
title_full_unstemmed |
Late Cenomanian Plenus event in the Western Interior Seaway |
title_sort |
late cenomanian plenus event in the western interior seaway |
publisher |
Elsevier |
publishDate |
2024 |
url |
https://epic.awi.de/id/eprint/59219/ https://epic.awi.de/id/eprint/59219/1/Sageman_etal.2023.clean.pdf https://doi.org/10.1016/j.cretres.2023.105798 https://hdl.handle.net/10013/epic.0f070398-371e-4d38-9ad6-68a51dff47c1 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
EPIC3Cretaceous Research, Elsevier, 156, pp. 105798-105798, ISSN: 0195-6671 |
op_relation |
https://epic.awi.de/id/eprint/59219/1/Sageman_etal.2023.clean.pdf Sageman, B. B. , Jones, M. M. , Arthur, M. A. , Niezgodzki, I. orcid:0000-0002-6746-8332 and Horton, D. E. (2024) Late Cenomanian Plenus event in the Western Interior Seaway , Cretaceous Research, 156 , p. 105798 . doi:10.1016/j.cretres.2023.105798 <https://doi.org/10.1016/j.cretres.2023.105798> , hdl:10013/epic.0f070398-371e-4d38-9ad6-68a51dff47c1 |
op_doi |
https://doi.org/10.1016/j.cretres.2023.105798 |
container_title |
Cretaceous Research |
container_volume |
156 |
container_start_page |
105798 |
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1811645096856125440 |