Recurrent E - W oscillations of the ice flow confluence of the East and West Antarctic ice sheets in the central Ross Sea, Antarctica, from the Middle Miocene to the present day
We present a multidisciplinary provenance study on legacy cores drilled in the 1970s during DSDP Leg 28 at sites 271 and 272, in the central Ross Sea, Antarctica. The two sites combined provide a discontinuous glaciomarine sedimentary record covering 18 myr, from the Middle Miocene to the present da...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Online Access: | https://hdl.handle.net/11365/1250114 https://doi.org/10.1016/j.palaeo.2023.111885 https://www.sciencedirect.com/science/article/pii/S0031018223005035?via=ihub |
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ftunivsiena:oai:usiena-air.unisi.it:11365/1250114 2024-06-23T07:47:01+00:00 Recurrent E - W oscillations of the ice flow confluence of the East and West Antarctic ice sheets in the central Ross Sea, Antarctica, from the Middle Miocene to the present day Balestrieri, Maria Laura Olivetti, Valerio Chew, David Zurli, Luca Zattin, Massimiliano Drakou, Foteini Cornamusini, Gianluca Perotti, Matteo Balestrieri, Maria Laura Olivetti, Valerio Chew, David Zurli, Luca Zattin, Massimiliano Drakou, Foteini Cornamusini, Gianluca Perotti, Matteo 2024 ELETTRONICO https://hdl.handle.net/11365/1250114 https://doi.org/10.1016/j.palaeo.2023.111885 https://www.sciencedirect.com/science/article/pii/S0031018223005035?via=ihub eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:001110901300001 volume:633 numberofpages:15 journal:PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY https://hdl.handle.net/11365/1250114 doi:10.1016/j.palaeo.2023.111885 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85176095638 https://www.sciencedirect.com/science/article/pii/S0031018223005035?via=ihub info:eu-repo/semantics/closedAccess Provenance study Apatite and Zircon U Pb dating Antarctica Middle Miocene-Quaternary glaciomarine sediments Ice-sheet flows DSDP Site 271 Site 272 info:eu-repo/semantics/article 2024 ftunivsiena https://doi.org/10.1016/j.palaeo.2023.111885 2024-06-04T14:10:51Z We present a multidisciplinary provenance study on legacy cores drilled in the 1970s during DSDP Leg 28 at sites 271 and 272, in the central Ross Sea, Antarctica. The two sites combined provide a discontinuous glaciomarine sedimentary record covering 18 myr, from the Middle Miocene to the present day. The two boreholes are located on the continental shelf and near the edge of the Ross Ice Shelf, in the middle of the Ross Sea, at a key site close at 180° longitude that is considered to represent the present confluence between ice flows fed by West Antarctica and East Antarctica. The study employs U Pb dating of detrital zircons and apatites, coupled with apatite fission-track dating and trace element and REE compositions. Based on the sedimentary provenance, our data show a recurrent E-W oscillation of the confluence of the West Antarctica and East Antarctica ice flows, allowing phases of advance and retreat of the West Antarctic Ice Sheet to be inferre Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelf Ross Ice Shelf Ross Sea West Antarctica Università degli Studi di Siena: USiena air Antarctic East Antarctica Ross Sea West Antarctica West Antarctic Ice Sheet Ross Ice Shelf Palaeogeography, Palaeoclimatology, Palaeoecology 633 111885 |
institution |
Open Polar |
collection |
Università degli Studi di Siena: USiena air |
op_collection_id |
ftunivsiena |
language |
English |
topic |
Provenance study Apatite and Zircon U Pb dating Antarctica Middle Miocene-Quaternary glaciomarine sediments Ice-sheet flows DSDP Site 271 Site 272 |
spellingShingle |
Provenance study Apatite and Zircon U Pb dating Antarctica Middle Miocene-Quaternary glaciomarine sediments Ice-sheet flows DSDP Site 271 Site 272 Balestrieri, Maria Laura Olivetti, Valerio Chew, David Zurli, Luca Zattin, Massimiliano Drakou, Foteini Cornamusini, Gianluca Perotti, Matteo Recurrent E - W oscillations of the ice flow confluence of the East and West Antarctic ice sheets in the central Ross Sea, Antarctica, from the Middle Miocene to the present day |
topic_facet |
Provenance study Apatite and Zircon U Pb dating Antarctica Middle Miocene-Quaternary glaciomarine sediments Ice-sheet flows DSDP Site 271 Site 272 |
description |
We present a multidisciplinary provenance study on legacy cores drilled in the 1970s during DSDP Leg 28 at sites 271 and 272, in the central Ross Sea, Antarctica. The two sites combined provide a discontinuous glaciomarine sedimentary record covering 18 myr, from the Middle Miocene to the present day. The two boreholes are located on the continental shelf and near the edge of the Ross Ice Shelf, in the middle of the Ross Sea, at a key site close at 180° longitude that is considered to represent the present confluence between ice flows fed by West Antarctica and East Antarctica. The study employs U Pb dating of detrital zircons and apatites, coupled with apatite fission-track dating and trace element and REE compositions. Based on the sedimentary provenance, our data show a recurrent E-W oscillation of the confluence of the West Antarctica and East Antarctica ice flows, allowing phases of advance and retreat of the West Antarctic Ice Sheet to be inferre |
author2 |
Balestrieri, Maria Laura Olivetti, Valerio Chew, David Zurli, Luca Zattin, Massimiliano Drakou, Foteini Cornamusini, Gianluca Perotti, Matteo |
format |
Article in Journal/Newspaper |
author |
Balestrieri, Maria Laura Olivetti, Valerio Chew, David Zurli, Luca Zattin, Massimiliano Drakou, Foteini Cornamusini, Gianluca Perotti, Matteo |
author_facet |
Balestrieri, Maria Laura Olivetti, Valerio Chew, David Zurli, Luca Zattin, Massimiliano Drakou, Foteini Cornamusini, Gianluca Perotti, Matteo |
author_sort |
Balestrieri, Maria Laura |
title |
Recurrent E - W oscillations of the ice flow confluence of the East and West Antarctic ice sheets in the central Ross Sea, Antarctica, from the Middle Miocene to the present day |
title_short |
Recurrent E - W oscillations of the ice flow confluence of the East and West Antarctic ice sheets in the central Ross Sea, Antarctica, from the Middle Miocene to the present day |
title_full |
Recurrent E - W oscillations of the ice flow confluence of the East and West Antarctic ice sheets in the central Ross Sea, Antarctica, from the Middle Miocene to the present day |
title_fullStr |
Recurrent E - W oscillations of the ice flow confluence of the East and West Antarctic ice sheets in the central Ross Sea, Antarctica, from the Middle Miocene to the present day |
title_full_unstemmed |
Recurrent E - W oscillations of the ice flow confluence of the East and West Antarctic ice sheets in the central Ross Sea, Antarctica, from the Middle Miocene to the present day |
title_sort |
recurrent e - w oscillations of the ice flow confluence of the east and west antarctic ice sheets in the central ross sea, antarctica, from the middle miocene to the present day |
publishDate |
2024 |
url |
https://hdl.handle.net/11365/1250114 https://doi.org/10.1016/j.palaeo.2023.111885 https://www.sciencedirect.com/science/article/pii/S0031018223005035?via=ihub |
geographic |
Antarctic East Antarctica Ross Sea West Antarctica West Antarctic Ice Sheet Ross Ice Shelf |
geographic_facet |
Antarctic East Antarctica Ross Sea West Antarctica West Antarctic Ice Sheet Ross Ice Shelf |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelf Ross Ice Shelf Ross Sea West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelf Ross Ice Shelf Ross Sea West Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:001110901300001 volume:633 numberofpages:15 journal:PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY https://hdl.handle.net/11365/1250114 doi:10.1016/j.palaeo.2023.111885 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85176095638 https://www.sciencedirect.com/science/article/pii/S0031018223005035?via=ihub |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.palaeo.2023.111885 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
633 |
container_start_page |
111885 |
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1802650199403790336 |