New Magnetostratigraphic Insights From Iceberg Alley on the Rhythms of Antarctic Climate During the Plio-Pleistocene
International Ocean Discovery Program (IODP) Expedition 382 in the Scotia Sea’s Iceberg Alley recovered among the most continuous and highest resolution stratigraphic records in the Southern Ocean near Antarctica spanning the last 3.3 Myr. Sites drilled in Dove Basin (U1536/U1537) have well‐resolved...
Published in: | Paleoceanography and Paleoclimatology |
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2021
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Online Access: | https://epic.awi.de/id/eprint/53650/ https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2020PA003994 https://hdl.handle.net/10013/epic.36c2e00e-7ca8-45fb-a626-3f13ccb5b979 |
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ftawi:oai:epic.awi.de:53650 2023-05-15T13:45:22+02:00 New Magnetostratigraphic Insights From Iceberg Alley on the Rhythms of Antarctic Climate During the Plio-Pleistocene Reilly, Brendan T. Tauxe, Lisa Brachfeld, Stefanie Raymo, Maureen Bailey, Ian Hemming, Sidney R. Weber, Michael E. Williams, Trevor Garcia, Marga Guitard, Michelle Martos, Yasmina M. Perez, Lara Zheng, Xufeng Armbrecht, Linda Cardillo, Fabricio Du, Zhiheng Fauth, Gerson Glüder, Anna Gutjahr, Marcus Hernandez-Alméida, Ivan Hoem, Frida Hwang, Ji-Hwan Izuka, Mutsumi Kato, Yuji Kenlee, Bridget O'Connell, Suzanne Peck, Victoria Ronge, Thomas Seki, Osamu Tripathi, Shubam Warnock, Jonathan 2021-01-18 https://epic.awi.de/id/eprint/53650/ https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2020PA003994 https://hdl.handle.net/10013/epic.36c2e00e-7ca8-45fb-a626-3f13ccb5b979 unknown Wiley Reilly, B. T. , Tauxe, L. , Brachfeld, S. , Raymo, M. , Bailey, I. , Hemming, S. R. , Weber, M. E. , Williams, T. , Garcia, M. , Guitard, M. , Martos, Y. M. , Perez, L. , Zheng, X. , Armbrecht, L. , Cardillo, F. , Du, Z. , Fauth, G. , Glüder, A. , Gutjahr, M. , Hernandez-Alméida, I. , Hoem, F. , Hwang, J. H. , Izuka, M. , Kato, Y. , Kenlee, B. , O'Connell, S. , Peck, V. , Ronge, T. orcid:0000-0003-2625-719X , Seki, O. , Tripathi, S. and Warnock, J. (2021) New Magnetostratigraphic Insights From Iceberg Alley on the Rhythms of Antarctic Climate During the Plio-Pleistocene , Paleoceanography and Paleoclimatology, 36 (2), pp. 1-27 . doi:10.1029/2020PA003994 <https://doi.org/10.1029/2020PA003994> , hdl:10013/epic.36c2e00e-7ca8-45fb-a626-3f13ccb5b979 EPIC3Paleoceanography and Paleoclimatology, Wiley, 36(2), pp. 1-27, ISSN: 0883-8305 Article isiRev 2021 ftawi https://doi.org/10.1029/2020PA003994 2021-12-24T15:46:10Z International Ocean Discovery Program (IODP) Expedition 382 in the Scotia Sea’s Iceberg Alley recovered among the most continuous and highest resolution stratigraphic records in the Southern Ocean near Antarctica spanning the last 3.3 Myr. Sites drilled in Dove Basin (U1536/U1537) have well‐resolved magnetostratigraphy and a strong imprint of orbital forcing in their lithostratigraphy. All magnetic reversals of the last 3.3 Myr are identified, providing a robust age model independent of orbital tuning. During the Pleistocene, alternation of terrigenous versus diatomaceous facies shows power in the eccentricity and obliquity frequencies comparable to the amplitude modulation of benthic δ18O records. This suggests that variations in Dove Basin lithostratigraphy during the Pleistocene reflect a similar history as globally integrated ice volume at these frequencies. However, power in the precession frequencies over the entire ∼3.3 Myr record does not match the amplitude modulation of benthic δ18O records, suggesting Dove Basin contains a unique record at these frequencies. Comparing the position of magnetic reversals relative to local facies changes in Dove Basin and the same magnetic reversals relative to benthic δ18O at North Atlantic IODP Site U1308, we demonstrate Dove Basin facies change at different times than benthic δ18O during intervals between ∼3 and 1 Ma. These differences are consistent with precession phase shifts and suggest climate signals with a Southern Hemisphere summer insolation phase were recorded around Antarctica. If Dove Basin lithology reflects local Antarctic ice volume changes, these signals could represent ice sheet precession‐paced variations not captured in benthic δ18O during the 41‐kyr world. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Iceberg* North Atlantic Southern Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Southern Ocean Paleoceanography and Paleoclimatology 36 2 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
International Ocean Discovery Program (IODP) Expedition 382 in the Scotia Sea’s Iceberg Alley recovered among the most continuous and highest resolution stratigraphic records in the Southern Ocean near Antarctica spanning the last 3.3 Myr. Sites drilled in Dove Basin (U1536/U1537) have well‐resolved magnetostratigraphy and a strong imprint of orbital forcing in their lithostratigraphy. All magnetic reversals of the last 3.3 Myr are identified, providing a robust age model independent of orbital tuning. During the Pleistocene, alternation of terrigenous versus diatomaceous facies shows power in the eccentricity and obliquity frequencies comparable to the amplitude modulation of benthic δ18O records. This suggests that variations in Dove Basin lithostratigraphy during the Pleistocene reflect a similar history as globally integrated ice volume at these frequencies. However, power in the precession frequencies over the entire ∼3.3 Myr record does not match the amplitude modulation of benthic δ18O records, suggesting Dove Basin contains a unique record at these frequencies. Comparing the position of magnetic reversals relative to local facies changes in Dove Basin and the same magnetic reversals relative to benthic δ18O at North Atlantic IODP Site U1308, we demonstrate Dove Basin facies change at different times than benthic δ18O during intervals between ∼3 and 1 Ma. These differences are consistent with precession phase shifts and suggest climate signals with a Southern Hemisphere summer insolation phase were recorded around Antarctica. If Dove Basin lithology reflects local Antarctic ice volume changes, these signals could represent ice sheet precession‐paced variations not captured in benthic δ18O during the 41‐kyr world. |
format |
Article in Journal/Newspaper |
author |
Reilly, Brendan T. Tauxe, Lisa Brachfeld, Stefanie Raymo, Maureen Bailey, Ian Hemming, Sidney R. Weber, Michael E. Williams, Trevor Garcia, Marga Guitard, Michelle Martos, Yasmina M. Perez, Lara Zheng, Xufeng Armbrecht, Linda Cardillo, Fabricio Du, Zhiheng Fauth, Gerson Glüder, Anna Gutjahr, Marcus Hernandez-Alméida, Ivan Hoem, Frida Hwang, Ji-Hwan Izuka, Mutsumi Kato, Yuji Kenlee, Bridget O'Connell, Suzanne Peck, Victoria Ronge, Thomas Seki, Osamu Tripathi, Shubam Warnock, Jonathan |
spellingShingle |
Reilly, Brendan T. Tauxe, Lisa Brachfeld, Stefanie Raymo, Maureen Bailey, Ian Hemming, Sidney R. Weber, Michael E. Williams, Trevor Garcia, Marga Guitard, Michelle Martos, Yasmina M. Perez, Lara Zheng, Xufeng Armbrecht, Linda Cardillo, Fabricio Du, Zhiheng Fauth, Gerson Glüder, Anna Gutjahr, Marcus Hernandez-Alméida, Ivan Hoem, Frida Hwang, Ji-Hwan Izuka, Mutsumi Kato, Yuji Kenlee, Bridget O'Connell, Suzanne Peck, Victoria Ronge, Thomas Seki, Osamu Tripathi, Shubam Warnock, Jonathan New Magnetostratigraphic Insights From Iceberg Alley on the Rhythms of Antarctic Climate During the Plio-Pleistocene |
author_facet |
Reilly, Brendan T. Tauxe, Lisa Brachfeld, Stefanie Raymo, Maureen Bailey, Ian Hemming, Sidney R. Weber, Michael E. Williams, Trevor Garcia, Marga Guitard, Michelle Martos, Yasmina M. Perez, Lara Zheng, Xufeng Armbrecht, Linda Cardillo, Fabricio Du, Zhiheng Fauth, Gerson Glüder, Anna Gutjahr, Marcus Hernandez-Alméida, Ivan Hoem, Frida Hwang, Ji-Hwan Izuka, Mutsumi Kato, Yuji Kenlee, Bridget O'Connell, Suzanne Peck, Victoria Ronge, Thomas Seki, Osamu Tripathi, Shubam Warnock, Jonathan |
author_sort |
Reilly, Brendan T. |
title |
New Magnetostratigraphic Insights From Iceberg Alley on the Rhythms of Antarctic Climate During the Plio-Pleistocene |
title_short |
New Magnetostratigraphic Insights From Iceberg Alley on the Rhythms of Antarctic Climate During the Plio-Pleistocene |
title_full |
New Magnetostratigraphic Insights From Iceberg Alley on the Rhythms of Antarctic Climate During the Plio-Pleistocene |
title_fullStr |
New Magnetostratigraphic Insights From Iceberg Alley on the Rhythms of Antarctic Climate During the Plio-Pleistocene |
title_full_unstemmed |
New Magnetostratigraphic Insights From Iceberg Alley on the Rhythms of Antarctic Climate During the Plio-Pleistocene |
title_sort |
new magnetostratigraphic insights from iceberg alley on the rhythms of antarctic climate during the plio-pleistocene |
publisher |
Wiley |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/53650/ https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2020PA003994 https://hdl.handle.net/10013/epic.36c2e00e-7ca8-45fb-a626-3f13ccb5b979 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctica Ice Sheet Iceberg* North Atlantic Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Iceberg* North Atlantic Southern Ocean |
op_source |
EPIC3Paleoceanography and Paleoclimatology, Wiley, 36(2), pp. 1-27, ISSN: 0883-8305 |
op_relation |
Reilly, B. T. , Tauxe, L. , Brachfeld, S. , Raymo, M. , Bailey, I. , Hemming, S. R. , Weber, M. E. , Williams, T. , Garcia, M. , Guitard, M. , Martos, Y. M. , Perez, L. , Zheng, X. , Armbrecht, L. , Cardillo, F. , Du, Z. , Fauth, G. , Glüder, A. , Gutjahr, M. , Hernandez-Alméida, I. , Hoem, F. , Hwang, J. H. , Izuka, M. , Kato, Y. , Kenlee, B. , O'Connell, S. , Peck, V. , Ronge, T. orcid:0000-0003-2625-719X , Seki, O. , Tripathi, S. and Warnock, J. (2021) New Magnetostratigraphic Insights From Iceberg Alley on the Rhythms of Antarctic Climate During the Plio-Pleistocene , Paleoceanography and Paleoclimatology, 36 (2), pp. 1-27 . doi:10.1029/2020PA003994 <https://doi.org/10.1029/2020PA003994> , hdl:10013/epic.36c2e00e-7ca8-45fb-a626-3f13ccb5b979 |
op_doi |
https://doi.org/10.1029/2020PA003994 |
container_title |
Paleoceanography and Paleoclimatology |
container_volume |
36 |
container_issue |
2 |
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1766222377919709184 |