The influence of Totten Glacier on the Late Cenozoic sedimentary record
Analysis of multichannel seismic profiles collected on the continental rise off the Sabrina Coast, East Antarctica, has allowed the determination of the acoustic features that are indicative of major evolution steps of the East Antarctic Ice Sheet (EAIS) and highlights the role of meltwater that ori...
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Cambridge University Press
2020
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Online Access: | http://hdl.handle.net/10261/228206 https://doi.org/10.1017/S0954102020000188 https://doi.org/10.13039/501100000923 https://doi.org/10.13039/501100006769 |
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ftcsic:oai:digital.csic.es:10261/228206 2024-02-11T09:58:24+01:00 The influence of Totten Glacier on the Late Cenozoic sedimentary record Donda, F. Leitchenkov, G. Brancolini, G. Romeo, Roberto De Santis, Laura Escutia, Carlota O'Brien, Philip Russian Science Foundation Australian Research Council 2020-03-25 http://hdl.handle.net/10261/228206 https://doi.org/10.1017/S0954102020000188 https://doi.org/10.13039/501100000923 https://doi.org/10.13039/501100006769 unknown Cambridge University Press http://dx.doi.org/10.1017/S0954102020000188 Sí doi:10.1017/S0954102020000188 issn: 1365-2079 Antarctic Science 32(4): 288-00 (2020) http://hdl.handle.net/10261/228206 http://dx.doi.org/10.13039/501100000923 http://dx.doi.org/10.13039/501100006769 none East Antarctica Multichannel seismic Seismostratigraphy Cenozoic Coastal zones Continental shelf Continental slope Deep drilling Ice sheet artículo http://purl.org/coar/resource_type/c_6501 2020 ftcsic https://doi.org/10.1017/S095410202000018810.13039/50110000092310.13039/501100006769 2024-01-16T11:02:06Z Analysis of multichannel seismic profiles collected on the continental rise off the Sabrina Coast, East Antarctica, has allowed the determination of the acoustic features that are indicative of major evolution steps of the East Antarctic Ice Sheet (EAIS) and highlights the role of meltwater that originated from Totten Glacier in shaping the margin architecture. The arrival of marine-terminating glaciers into the coastal region was recorded by an enhanced sediment input on the continental rise and the nucleation of channel-levees. Downslope sedimentary processes were dominant throughout the Late Cenozoic, testifying to the progressive growth of a highly dynamic, temperate ice sheet on the continent. The last evolutionary step marks the transition to when a full polar glacial regime occurred. The development of a prograding wedge with steeply dipping foresets on the continental shelf and slope exemplifies sedimentation at this time. Other sub-sea-floor observations indicate that downslope fluxes, triggered by glacial meltwater, were still able to deeply erode and deliver sediments to the rise area. This study's findings have led to the identification of expanded and well-preserved sedimentary successions, which we suggest should be considered as priority targets for future International Ocean Discovery Program deep drilling due to the sensitivity of the ice sheet in this area. This study is funded by Italian Programma Nazionale di Ricerche in Antartide (PNRA) under the TYTAN Project. The Marine National Facility Survey IN2017-V01 survey was supported by the Australian Government through Australian Antarctic Science grant AAS#4333 and Australian Research Council grant DP170100557. G. Leitchenkov acknowledges the Russian Science Foundation grant 16-17-10139. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica Antartide East Antarctica Ice Sheet Totten Glacier Digital.CSIC (Spanish National Research Council) Antarctic East Antarctic Ice Sheet East Antarctica Sabrina Coast ENVELOPE(118.550,118.550,-67.000,-67.000) Totten Glacier ENVELOPE(116.333,116.333,-66.833,-66.833) Antarctic Science 32 4 288 300 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
East Antarctica Multichannel seismic Seismostratigraphy Cenozoic Coastal zones Continental shelf Continental slope Deep drilling Ice sheet |
spellingShingle |
East Antarctica Multichannel seismic Seismostratigraphy Cenozoic Coastal zones Continental shelf Continental slope Deep drilling Ice sheet Donda, F. Leitchenkov, G. Brancolini, G. Romeo, Roberto De Santis, Laura Escutia, Carlota O'Brien, Philip The influence of Totten Glacier on the Late Cenozoic sedimentary record |
topic_facet |
East Antarctica Multichannel seismic Seismostratigraphy Cenozoic Coastal zones Continental shelf Continental slope Deep drilling Ice sheet |
description |
Analysis of multichannel seismic profiles collected on the continental rise off the Sabrina Coast, East Antarctica, has allowed the determination of the acoustic features that are indicative of major evolution steps of the East Antarctic Ice Sheet (EAIS) and highlights the role of meltwater that originated from Totten Glacier in shaping the margin architecture. The arrival of marine-terminating glaciers into the coastal region was recorded by an enhanced sediment input on the continental rise and the nucleation of channel-levees. Downslope sedimentary processes were dominant throughout the Late Cenozoic, testifying to the progressive growth of a highly dynamic, temperate ice sheet on the continent. The last evolutionary step marks the transition to when a full polar glacial regime occurred. The development of a prograding wedge with steeply dipping foresets on the continental shelf and slope exemplifies sedimentation at this time. Other sub-sea-floor observations indicate that downslope fluxes, triggered by glacial meltwater, were still able to deeply erode and deliver sediments to the rise area. This study's findings have led to the identification of expanded and well-preserved sedimentary successions, which we suggest should be considered as priority targets for future International Ocean Discovery Program deep drilling due to the sensitivity of the ice sheet in this area. This study is funded by Italian Programma Nazionale di Ricerche in Antartide (PNRA) under the TYTAN Project. The Marine National Facility Survey IN2017-V01 survey was supported by the Australian Government through Australian Antarctic Science grant AAS#4333 and Australian Research Council grant DP170100557. G. Leitchenkov acknowledges the Russian Science Foundation grant 16-17-10139. |
author2 |
Russian Science Foundation Australian Research Council |
format |
Article in Journal/Newspaper |
author |
Donda, F. Leitchenkov, G. Brancolini, G. Romeo, Roberto De Santis, Laura Escutia, Carlota O'Brien, Philip |
author_facet |
Donda, F. Leitchenkov, G. Brancolini, G. Romeo, Roberto De Santis, Laura Escutia, Carlota O'Brien, Philip |
author_sort |
Donda, F. |
title |
The influence of Totten Glacier on the Late Cenozoic sedimentary record |
title_short |
The influence of Totten Glacier on the Late Cenozoic sedimentary record |
title_full |
The influence of Totten Glacier on the Late Cenozoic sedimentary record |
title_fullStr |
The influence of Totten Glacier on the Late Cenozoic sedimentary record |
title_full_unstemmed |
The influence of Totten Glacier on the Late Cenozoic sedimentary record |
title_sort |
influence of totten glacier on the late cenozoic sedimentary record |
publisher |
Cambridge University Press |
publishDate |
2020 |
url |
http://hdl.handle.net/10261/228206 https://doi.org/10.1017/S0954102020000188 https://doi.org/10.13039/501100000923 https://doi.org/10.13039/501100006769 |
long_lat |
ENVELOPE(118.550,118.550,-67.000,-67.000) ENVELOPE(116.333,116.333,-66.833,-66.833) |
geographic |
Antarctic East Antarctic Ice Sheet East Antarctica Sabrina Coast Totten Glacier |
geographic_facet |
Antarctic East Antarctic Ice Sheet East Antarctica Sabrina Coast Totten Glacier |
genre |
Antarc* Antarctic Antarctic Science Antarctica Antartide East Antarctica Ice Sheet Totten Glacier |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica Antartide East Antarctica Ice Sheet Totten Glacier |
op_relation |
http://dx.doi.org/10.1017/S0954102020000188 Sí doi:10.1017/S0954102020000188 issn: 1365-2079 Antarctic Science 32(4): 288-00 (2020) http://hdl.handle.net/10261/228206 http://dx.doi.org/10.13039/501100000923 http://dx.doi.org/10.13039/501100006769 |
op_rights |
none |
op_doi |
https://doi.org/10.1017/S095410202000018810.13039/50110000092310.13039/501100006769 |
container_title |
Antarctic Science |
container_volume |
32 |
container_issue |
4 |
container_start_page |
288 |
op_container_end_page |
300 |
_version_ |
1790594043340652544 |