A large West Antarctic Ice Sheet explains early Neogene sea-level amplitude
Early to Middle Miocene sea-level oscillations of approximately 40–60 m estimated from far-field records1–3 are interpreted to reflect the loss of virtually all East Antarctic ice during peak warmth2. This contrasts with ice-sheet model experiments suggesting most terrestrial ice in East Antarctica...
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2021
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Online Access: | https://epic.awi.de/id/eprint/55283/ https://doi.org/10.1038/s41586-021-04148-0 https://hdl.handle.net/10013/epic.78e4e896-b5c6-42b1-8c66-8da8e11dbe53 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Early to Middle Miocene sea-level oscillations of approximately 40–60 m estimated from far-field records1–3 are interpreted to reflect the loss of virtually all East Antarctic ice during peak warmth2. This contrasts with ice-sheet model experiments suggesting most terrestrial ice in East Antarctica was retained even during the warmest intervals of the Middle Miocene4,5. Data and model outputs can be reconciled if a large West Antarctic Ice Sheet (WAIS) existed and expanded across most of the outer continental shelf during the Early Miocene, accounting for maximum ice-sheet volumes. Here we provide the earliest geological evidence proving large WAIS expansions occurred during the Early Miocene (~17.72–17.40 Ma). Geochemical and petrographic data show glacimarine sediments recovered at International Ocean Discovery Program (IODP) Site U1521 in the central Ross Sea derive from West Antarctica, requiring the presence of a WAIS covering most of the Ross Sea continental shelf. Seismic, lithological and palynological data reveal the intermittent proximity of grounded ice to Site U1521. The erosion rate calculated from this sediment package greatly exceeds the long-term mean, implying rapid erosion of West Antarctica. This interval therefore captures a key step in the genesis of a marine-based WAIS and a tipping point in Antarctic ice-sheet evolution. |
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Article in Journal/Newspaper |
author |
Marschalek, J. W. Zurli, L. Talarico, F. van de Flierdt, T. Vermeesch, P. Carter, A. Beny, F. Bout-Roumazeilles, V. Sangiorgi, F. Hemming, S. R. Pérez, L. F. Colleoni, F. Prebble, J. G. van Peer, T. E. Perotti, M. Shevenell, A. E. Browne, I. Kulhanek, D. K. Levy, R. Harwood, D. Sullivan, N. B. Meyers, S. R. Griffith, E. M. Hillenbrand, C.-D. Gasson, E. Siegert, M. J. Keisling, B. Licht, K. J. Kuhn, G. Dodd, J. P. Boshuis, C. De Santis, L. McKay, R. M. Ash, Jeanine Beny, François Browne, Imogen M. Cortese, Giuseppe De Santis, Laura Dodd, Justin P. Esper, Oliver M. Gales, Jenny A. Harwood, David M. Ishino, Saki Keisling, Benjamin A. Kim, Sookwan Kim, Sunghan Kulhanek, Denise K. Laberg, Jan Sverre Leckie, R. Mark McKay, Robert M. Müller, Juliane Patterson, Molly O. Romans, Brian W. Romero, Oscar E. Sangiorgi, Francesca Seki, Osamu Shevenell, Amelia E. Singh, Shiv M. Cordeiro de Sousa, Isabela M. Sugisaki, Saiko T. van de Flierdt, Tina van Peer, Tim E. Xiao, Whenshen Xiong, Zhifang |
spellingShingle |
Marschalek, J. W. Zurli, L. Talarico, F. van de Flierdt, T. Vermeesch, P. Carter, A. Beny, F. Bout-Roumazeilles, V. Sangiorgi, F. Hemming, S. R. Pérez, L. F. Colleoni, F. Prebble, J. G. van Peer, T. E. Perotti, M. Shevenell, A. E. Browne, I. Kulhanek, D. K. Levy, R. Harwood, D. Sullivan, N. B. Meyers, S. R. Griffith, E. M. Hillenbrand, C.-D. Gasson, E. Siegert, M. J. Keisling, B. Licht, K. J. Kuhn, G. Dodd, J. P. Boshuis, C. De Santis, L. McKay, R. M. Ash, Jeanine Beny, François Browne, Imogen M. Cortese, Giuseppe De Santis, Laura Dodd, Justin P. Esper, Oliver M. Gales, Jenny A. Harwood, David M. Ishino, Saki Keisling, Benjamin A. Kim, Sookwan Kim, Sunghan Kulhanek, Denise K. Laberg, Jan Sverre Leckie, R. Mark McKay, Robert M. Müller, Juliane Patterson, Molly O. Romans, Brian W. Romero, Oscar E. Sangiorgi, Francesca Seki, Osamu Shevenell, Amelia E. Singh, Shiv M. Cordeiro de Sousa, Isabela M. Sugisaki, Saiko T. van de Flierdt, Tina van Peer, Tim E. Xiao, Whenshen Xiong, Zhifang A large West Antarctic Ice Sheet explains early Neogene sea-level amplitude |
author_facet |
Marschalek, J. W. Zurli, L. Talarico, F. van de Flierdt, T. Vermeesch, P. Carter, A. Beny, F. Bout-Roumazeilles, V. Sangiorgi, F. Hemming, S. R. Pérez, L. F. Colleoni, F. Prebble, J. G. van Peer, T. E. Perotti, M. Shevenell, A. E. Browne, I. Kulhanek, D. K. Levy, R. Harwood, D. Sullivan, N. B. Meyers, S. R. Griffith, E. M. Hillenbrand, C.-D. Gasson, E. Siegert, M. J. Keisling, B. Licht, K. J. Kuhn, G. Dodd, J. P. Boshuis, C. De Santis, L. McKay, R. M. Ash, Jeanine Beny, François Browne, Imogen M. Cortese, Giuseppe De Santis, Laura Dodd, Justin P. Esper, Oliver M. Gales, Jenny A. Harwood, David M. Ishino, Saki Keisling, Benjamin A. Kim, Sookwan Kim, Sunghan Kulhanek, Denise K. Laberg, Jan Sverre Leckie, R. Mark McKay, Robert M. Müller, Juliane Patterson, Molly O. Romans, Brian W. Romero, Oscar E. Sangiorgi, Francesca Seki, Osamu Shevenell, Amelia E. Singh, Shiv M. Cordeiro de Sousa, Isabela M. Sugisaki, Saiko T. van de Flierdt, Tina van Peer, Tim E. Xiao, Whenshen Xiong, Zhifang |
author_sort |
Marschalek, J. W. |
title |
A large West Antarctic Ice Sheet explains early Neogene sea-level amplitude |
title_short |
A large West Antarctic Ice Sheet explains early Neogene sea-level amplitude |
title_full |
A large West Antarctic Ice Sheet explains early Neogene sea-level amplitude |
title_fullStr |
A large West Antarctic Ice Sheet explains early Neogene sea-level amplitude |
title_full_unstemmed |
A large West Antarctic Ice Sheet explains early Neogene sea-level amplitude |
title_sort |
large west antarctic ice sheet explains early neogene sea-level amplitude |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/55283/ https://doi.org/10.1038/s41586-021-04148-0 https://hdl.handle.net/10013/epic.78e4e896-b5c6-42b1-8c66-8da8e11dbe53 |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ross Sea West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ross Sea West Antarctica |
op_source |
EPIC3Nature, 600(7889), pp. 450-455, ISSN: 0028-0836 |
op_relation |
Marschalek, J. W. , Zurli, L. , Talarico, F. , van de Flierdt, T. , Vermeesch, P. , Carter, A. , Beny, F. , Bout-Roumazeilles, V. , Sangiorgi, F. , Hemming, S. R. , Pérez, L. F. , Colleoni, F. , Prebble, J. G. , van Peer, T. E. , Perotti, M. , Shevenell, A. E. , Browne, I. , Kulhanek, D. K. , Levy, R. , Harwood, D. , Sullivan, N. B. , Meyers, S. R. , Griffith, E. M. , Hillenbrand, C. D. , Gasson, E. , Siegert, M. J. , Keisling, B. , Licht, K. J. , Kuhn, G. orcid:0000-0001-6069-7485 , Dodd, J. P. , Boshuis, C. , De Santis, L. , McKay, R. M. , Ash, J. , Beny, F. , Browne, I. M. , Cortese, G. , De Santis, L. , Dodd, J. P. , Esper, O. M. orcid:0000-0002-4342-3471 , Gales, J. A. , Harwood, D. M. , Ishino, S. , Keisling, B. A. , Kim, S. , Kim, S. , Kulhanek, D. K. , Laberg, J. S. , Leckie, R. M. , McKay, R. M. , Müller, J. orcid:0000-0003-0724-4131 , Patterson, M. O. , Romans, B. W. , Romero, O. E. , Sangiorgi, F. , Seki, O. , Shevenell, A. E. , Singh, S. M. , Cordeiro de Sousa, I. M. , Sugisaki, S. T. , van de Flierdt, T. , van Peer, T. E. , Xiao, W. and Xiong, Z. (2021) A large West Antarctic Ice Sheet explains early Neogene sea-level amplitude , Nature, 600 (7889), pp. 450-455 . doi:10.1038/s41586-021-04148-0 <https://doi.org/10.1038/s41586-021-04148-0> , hdl:10013/epic.78e4e896-b5c6-42b1-8c66-8da8e11dbe53 |
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https://doi.org/10.1038/s41586-021-04148-0 |
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ftawi:oai:epic.awi.de:55283 2024-09-15T17:45:49+00:00 A large West Antarctic Ice Sheet explains early Neogene sea-level amplitude Marschalek, J. W. Zurli, L. Talarico, F. van de Flierdt, T. Vermeesch, P. Carter, A. Beny, F. Bout-Roumazeilles, V. Sangiorgi, F. Hemming, S. R. Pérez, L. F. Colleoni, F. Prebble, J. G. van Peer, T. E. Perotti, M. Shevenell, A. E. Browne, I. Kulhanek, D. K. Levy, R. Harwood, D. Sullivan, N. B. Meyers, S. R. Griffith, E. M. Hillenbrand, C.-D. Gasson, E. Siegert, M. J. Keisling, B. Licht, K. J. Kuhn, G. Dodd, J. P. Boshuis, C. De Santis, L. McKay, R. M. Ash, Jeanine Beny, François Browne, Imogen M. Cortese, Giuseppe De Santis, Laura Dodd, Justin P. Esper, Oliver M. Gales, Jenny A. Harwood, David M. Ishino, Saki Keisling, Benjamin A. Kim, Sookwan Kim, Sunghan Kulhanek, Denise K. Laberg, Jan Sverre Leckie, R. Mark McKay, Robert M. Müller, Juliane Patterson, Molly O. Romans, Brian W. Romero, Oscar E. Sangiorgi, Francesca Seki, Osamu Shevenell, Amelia E. Singh, Shiv M. Cordeiro de Sousa, Isabela M. Sugisaki, Saiko T. van de Flierdt, Tina van Peer, Tim E. Xiao, Whenshen Xiong, Zhifang 2021 https://epic.awi.de/id/eprint/55283/ https://doi.org/10.1038/s41586-021-04148-0 https://hdl.handle.net/10013/epic.78e4e896-b5c6-42b1-8c66-8da8e11dbe53 unknown Marschalek, J. W. , Zurli, L. , Talarico, F. , van de Flierdt, T. , Vermeesch, P. , Carter, A. , Beny, F. , Bout-Roumazeilles, V. , Sangiorgi, F. , Hemming, S. R. , Pérez, L. F. , Colleoni, F. , Prebble, J. G. , van Peer, T. E. , Perotti, M. , Shevenell, A. E. , Browne, I. , Kulhanek, D. K. , Levy, R. , Harwood, D. , Sullivan, N. B. , Meyers, S. R. , Griffith, E. M. , Hillenbrand, C. D. , Gasson, E. , Siegert, M. J. , Keisling, B. , Licht, K. J. , Kuhn, G. orcid:0000-0001-6069-7485 , Dodd, J. P. , Boshuis, C. , De Santis, L. , McKay, R. M. , Ash, J. , Beny, F. , Browne, I. M. , Cortese, G. , De Santis, L. , Dodd, J. P. , Esper, O. M. orcid:0000-0002-4342-3471 , Gales, J. A. , Harwood, D. M. , Ishino, S. , Keisling, B. A. , Kim, S. , Kim, S. , Kulhanek, D. K. , Laberg, J. S. , Leckie, R. M. , McKay, R. M. , Müller, J. orcid:0000-0003-0724-4131 , Patterson, M. O. , Romans, B. W. , Romero, O. E. , Sangiorgi, F. , Seki, O. , Shevenell, A. E. , Singh, S. M. , Cordeiro de Sousa, I. M. , Sugisaki, S. T. , van de Flierdt, T. , van Peer, T. E. , Xiao, W. and Xiong, Z. (2021) A large West Antarctic Ice Sheet explains early Neogene sea-level amplitude , Nature, 600 (7889), pp. 450-455 . doi:10.1038/s41586-021-04148-0 <https://doi.org/10.1038/s41586-021-04148-0> , hdl:10013/epic.78e4e896-b5c6-42b1-8c66-8da8e11dbe53 EPIC3Nature, 600(7889), pp. 450-455, ISSN: 0028-0836 Article isiRev 2021 ftawi https://doi.org/10.1038/s41586-021-04148-0 2024-06-24T04:27:29Z Early to Middle Miocene sea-level oscillations of approximately 40–60 m estimated from far-field records1–3 are interpreted to reflect the loss of virtually all East Antarctic ice during peak warmth2. This contrasts with ice-sheet model experiments suggesting most terrestrial ice in East Antarctica was retained even during the warmest intervals of the Middle Miocene4,5. Data and model outputs can be reconciled if a large West Antarctic Ice Sheet (WAIS) existed and expanded across most of the outer continental shelf during the Early Miocene, accounting for maximum ice-sheet volumes. Here we provide the earliest geological evidence proving large WAIS expansions occurred during the Early Miocene (~17.72–17.40 Ma). Geochemical and petrographic data show glacimarine sediments recovered at International Ocean Discovery Program (IODP) Site U1521 in the central Ross Sea derive from West Antarctica, requiring the presence of a WAIS covering most of the Ross Sea continental shelf. Seismic, lithological and palynological data reveal the intermittent proximity of grounded ice to Site U1521. The erosion rate calculated from this sediment package greatly exceeds the long-term mean, implying rapid erosion of West Antarctica. This interval therefore captures a key step in the genesis of a marine-based WAIS and a tipping point in Antarctic ice-sheet evolution. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ross Sea West Antarctica Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Nature 600 7889 450 455 |