Supplementary material of IODP Site 342-U1410 and COSMOS model, supplement to: Vahlenkamp, Maximilian; Niezgodzki, Igor; De Vleeschouwer, David; Bickert, Torsten; Harper, Dustin T; Kirtland Turner, Sandra; Lohmann, Gerrit; Sexton, Philip F; Zachos, James C; Pälike, Heiko (2018): Astronomically paced changes in deep-water circulation in the western North Atlantic during the middle Eocene. Earth and Planetary Science Letters, 484, 329-340
North Atlantic Deep Water (NADW) currently redistributes heat and salt between Earth's ocean basins, and plays a vital role in the ocean-atmosphere CO2 exchange. Despite its crucial role in today's climate system, vigorous debate remains as to when deep-water formation in the North Atlanti...
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Online Access: | https://dx.doi.org/10.1594/pangaea.884699 https://doi.pangaea.de/10.1594/PANGAEA.884699 |
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ftdatacite:10.1594/pangaea.884699 2023-05-15T17:13:52+02:00 Supplementary material of IODP Site 342-U1410 and COSMOS model, supplement to: Vahlenkamp, Maximilian; Niezgodzki, Igor; De Vleeschouwer, David; Bickert, Torsten; Harper, Dustin T; Kirtland Turner, Sandra; Lohmann, Gerrit; Sexton, Philip F; Zachos, James C; Pälike, Heiko (2018): Astronomically paced changes in deep-water circulation in the western North Atlantic during the middle Eocene. Earth and Planetary Science Letters, 484, 329-340 Vahlenkamp, Maximilian Niezgodzki, Igor De Vleeschouwer, David Bickert, Torsten Harper, Dustin T Kirtland Turner, Sandra Lohmann, Gerrit Sexton, Philip F Zachos, James C Pälike, Heiko 2018 application/zip https://dx.doi.org/10.1594/pangaea.884699 https://doi.pangaea.de/10.1594/PANGAEA.884699 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.epsl.2017.12.016 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Center for Marine Environmental Sciences MARUM Integrated Ocean Drilling Program / International Ocean Discovery Program IODP article Supplementary Collection of Datasets Collection 2018 ftdatacite https://doi.org/10.1594/pangaea.884699 https://doi.org/10.1016/j.epsl.2017.12.016 2022-02-09T12:04:35Z North Atlantic Deep Water (NADW) currently redistributes heat and salt between Earth's ocean basins, and plays a vital role in the ocean-atmosphere CO2 exchange. Despite its crucial role in today's climate system, vigorous debate remains as to when deep-water formation in the North Atlantic started. Here, we present datasets from carbonate-rich middle Eocene sediments from the Newfoundland Ridge, revealing a unique archive of paleoceanographic change from the progressively cooling climate of the middle Eocene. Well-defined lithologic alternations between calcareous ooze and clay-rich intervals occur at the ~41-kyr beat of axial obliquity. Hence, we identify obliquity as the driver of middle Eocene (43.5-46 Ma) Northern Component Water (NCW, the predecessor of modern NADW) variability. High-resolution benthic foraminiferal d18O and d13C suggest that obliquity minima correspond to cold, nutrient-depleted, western North Atlantic deep waters. We thus link stronger NCW formation with obliquity minima. In contrast, during obliquity maxima, Deep Western Boundary Currents were weaker and warmer, while abyssal nutrients were more abundant. These aspects reflect a more sluggish NCW formation. This obliquity-paced paleoceanographic regime is in excellent agreement with results from an Earth system model, in which obliquity minima configurations enhance NCW formation. Article in Journal/Newspaper NADW Newfoundland North Atlantic Deep Water North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Harper ENVELOPE(-57.050,-57.050,-84.050,-84.050) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Center for Marine Environmental Sciences MARUM Integrated Ocean Drilling Program / International Ocean Discovery Program IODP |
spellingShingle |
Center for Marine Environmental Sciences MARUM Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Vahlenkamp, Maximilian Niezgodzki, Igor De Vleeschouwer, David Bickert, Torsten Harper, Dustin T Kirtland Turner, Sandra Lohmann, Gerrit Sexton, Philip F Zachos, James C Pälike, Heiko Supplementary material of IODP Site 342-U1410 and COSMOS model, supplement to: Vahlenkamp, Maximilian; Niezgodzki, Igor; De Vleeschouwer, David; Bickert, Torsten; Harper, Dustin T; Kirtland Turner, Sandra; Lohmann, Gerrit; Sexton, Philip F; Zachos, James C; Pälike, Heiko (2018): Astronomically paced changes in deep-water circulation in the western North Atlantic during the middle Eocene. Earth and Planetary Science Letters, 484, 329-340 |
topic_facet |
Center for Marine Environmental Sciences MARUM Integrated Ocean Drilling Program / International Ocean Discovery Program IODP |
description |
North Atlantic Deep Water (NADW) currently redistributes heat and salt between Earth's ocean basins, and plays a vital role in the ocean-atmosphere CO2 exchange. Despite its crucial role in today's climate system, vigorous debate remains as to when deep-water formation in the North Atlantic started. Here, we present datasets from carbonate-rich middle Eocene sediments from the Newfoundland Ridge, revealing a unique archive of paleoceanographic change from the progressively cooling climate of the middle Eocene. Well-defined lithologic alternations between calcareous ooze and clay-rich intervals occur at the ~41-kyr beat of axial obliquity. Hence, we identify obliquity as the driver of middle Eocene (43.5-46 Ma) Northern Component Water (NCW, the predecessor of modern NADW) variability. High-resolution benthic foraminiferal d18O and d13C suggest that obliquity minima correspond to cold, nutrient-depleted, western North Atlantic deep waters. We thus link stronger NCW formation with obliquity minima. In contrast, during obliquity maxima, Deep Western Boundary Currents were weaker and warmer, while abyssal nutrients were more abundant. These aspects reflect a more sluggish NCW formation. This obliquity-paced paleoceanographic regime is in excellent agreement with results from an Earth system model, in which obliquity minima configurations enhance NCW formation. |
format |
Article in Journal/Newspaper |
author |
Vahlenkamp, Maximilian Niezgodzki, Igor De Vleeschouwer, David Bickert, Torsten Harper, Dustin T Kirtland Turner, Sandra Lohmann, Gerrit Sexton, Philip F Zachos, James C Pälike, Heiko |
author_facet |
Vahlenkamp, Maximilian Niezgodzki, Igor De Vleeschouwer, David Bickert, Torsten Harper, Dustin T Kirtland Turner, Sandra Lohmann, Gerrit Sexton, Philip F Zachos, James C Pälike, Heiko |
author_sort |
Vahlenkamp, Maximilian |
title |
Supplementary material of IODP Site 342-U1410 and COSMOS model, supplement to: Vahlenkamp, Maximilian; Niezgodzki, Igor; De Vleeschouwer, David; Bickert, Torsten; Harper, Dustin T; Kirtland Turner, Sandra; Lohmann, Gerrit; Sexton, Philip F; Zachos, James C; Pälike, Heiko (2018): Astronomically paced changes in deep-water circulation in the western North Atlantic during the middle Eocene. Earth and Planetary Science Letters, 484, 329-340 |
title_short |
Supplementary material of IODP Site 342-U1410 and COSMOS model, supplement to: Vahlenkamp, Maximilian; Niezgodzki, Igor; De Vleeschouwer, David; Bickert, Torsten; Harper, Dustin T; Kirtland Turner, Sandra; Lohmann, Gerrit; Sexton, Philip F; Zachos, James C; Pälike, Heiko (2018): Astronomically paced changes in deep-water circulation in the western North Atlantic during the middle Eocene. Earth and Planetary Science Letters, 484, 329-340 |
title_full |
Supplementary material of IODP Site 342-U1410 and COSMOS model, supplement to: Vahlenkamp, Maximilian; Niezgodzki, Igor; De Vleeschouwer, David; Bickert, Torsten; Harper, Dustin T; Kirtland Turner, Sandra; Lohmann, Gerrit; Sexton, Philip F; Zachos, James C; Pälike, Heiko (2018): Astronomically paced changes in deep-water circulation in the western North Atlantic during the middle Eocene. Earth and Planetary Science Letters, 484, 329-340 |
title_fullStr |
Supplementary material of IODP Site 342-U1410 and COSMOS model, supplement to: Vahlenkamp, Maximilian; Niezgodzki, Igor; De Vleeschouwer, David; Bickert, Torsten; Harper, Dustin T; Kirtland Turner, Sandra; Lohmann, Gerrit; Sexton, Philip F; Zachos, James C; Pälike, Heiko (2018): Astronomically paced changes in deep-water circulation in the western North Atlantic during the middle Eocene. Earth and Planetary Science Letters, 484, 329-340 |
title_full_unstemmed |
Supplementary material of IODP Site 342-U1410 and COSMOS model, supplement to: Vahlenkamp, Maximilian; Niezgodzki, Igor; De Vleeschouwer, David; Bickert, Torsten; Harper, Dustin T; Kirtland Turner, Sandra; Lohmann, Gerrit; Sexton, Philip F; Zachos, James C; Pälike, Heiko (2018): Astronomically paced changes in deep-water circulation in the western North Atlantic during the middle Eocene. Earth and Planetary Science Letters, 484, 329-340 |
title_sort |
supplementary material of iodp site 342-u1410 and cosmos model, supplement to: vahlenkamp, maximilian; niezgodzki, igor; de vleeschouwer, david; bickert, torsten; harper, dustin t; kirtland turner, sandra; lohmann, gerrit; sexton, philip f; zachos, james c; pälike, heiko (2018): astronomically paced changes in deep-water circulation in the western north atlantic during the middle eocene. earth and planetary science letters, 484, 329-340 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2018 |
url |
https://dx.doi.org/10.1594/pangaea.884699 https://doi.pangaea.de/10.1594/PANGAEA.884699 |
long_lat |
ENVELOPE(-57.050,-57.050,-84.050,-84.050) |
geographic |
Harper |
geographic_facet |
Harper |
genre |
NADW Newfoundland North Atlantic Deep Water North Atlantic |
genre_facet |
NADW Newfoundland North Atlantic Deep Water North Atlantic |
op_relation |
https://dx.doi.org/10.1016/j.epsl.2017.12.016 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.884699 https://doi.org/10.1016/j.epsl.2017.12.016 |
_version_ |
1766071056581263360 |