Early to middle Miocene ice sheet dynamics in the westernmost Ross Sea (Antarctica): Regional correlations
The present-day morpho-stratigraphy of the Ross Sea is the result of Cenozoic tectonic and cryospheric events, and constitutes a key record of Antarctica's cryospheric evolution. An enduring problem in interpreting this record in a broader regional context is that the correlation between easter...
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Online Access: | https://hdl.handle.net/1911/113187 https://doi.org/10.1016/j.gloplacha.2022.103891 |
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ftriceuniv:oai:scholarship.rice.edu:1911/113187 2023-05-15T13:44:55+02:00 Early to middle Miocene ice sheet dynamics in the westernmost Ross Sea (Antarctica): Regional correlations Pérez, Lara F. McKay, Robert M. De Santis, Laura Larter, Robert D. Levy, Richard H. Naish, Timothy R. Anderson, John B. Bart, Philip J. Busetti, Martina Dunbar, Gavin Sauli, Chiara Sorlien, Christopher C. Speece, Marvin 2022 application/pdf https://hdl.handle.net/1911/113187 https://doi.org/10.1016/j.gloplacha.2022.103891 eng eng Elsevier Pérez, Lara F., McKay, Robert M., De Santis, Laura, et al. "Early to middle Miocene ice sheet dynamics in the westernmost Ross Sea (Antarctica): Regional correlations." Global and Planetary Change, 216, (2022) Elsevier: https://doi.org/10.1016/j.gloplacha.2022.103891. https://hdl.handle.net/1911/113187 1-s2-0-S0921818122001588-main https://doi.org/10.1016/j.gloplacha.2022.103891 This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/) http://creativecommons.org/licenses/by/4.0/) CC-BY Journal article Text publisher version 2022 ftriceuniv https://doi.org/10.1016/j.gloplacha.2022.103891 2022-09-10T22:30:18Z The present-day morpho-stratigraphy of the Ross Sea is the result of Cenozoic tectonic and cryospheric events, and constitutes a key record of Antarctica's cryospheric evolution. An enduring problem in interpreting this record in a broader regional context is that the correlation between eastern and western Ross Sea stratigraphy has remained uncertain due to the limited number of drill sites. We correlate the glacial-related features observed on a dense network of seismic reflection profiles in McMurdo Sound with those identified in the Nordenskjöld and Drygalski Basins, as well as the basins farther east in the central Ross Sea. We present an improved correlation of the regional patterns of early to middle Miocene ice-sheet variance across the Ross Sea constrained by new evaluation of seismic facies and age models from one site recovered by the Antarctic Drilling Project (ANDRILL) in the southwestern most part of McMurdo Sound. We also integrate this correlation with the recently published seismic framework in the central Ross Sea. The formation of U-shaped valleys during the early Miocene in McMurdo Sound, together with prograding sedimentary wedges in the western-most basins, and the central Ross Sea, suggest two major phases of overall advance of a marine-terminating ice sheet between ~18 Ma and ~17.4 Ma. Widespread formation of turbiditic channel-levee systems in McMurdo Sound and rapid sediment deposition in Nordernskjöld Basin point to subsequent ice-sheet retreat between ~17.4 Ma and ~15.8 Ma, coinciding with the onset of the Miocene Climate Optimum (MCO; ~17–14.5 Ma). However, the carving of troughs and formation of irregular morphologic features suggest that an extensive ice sheet still remained along the western Ross margin at ~17.4 Ma and a brief episode of ice-sheet advance occurred at ~16.8 Ma in the earliest interval of the MCO. Subsequent marine-based ice sheet advance during the Middle Miocene Climate Transition (MMCT, ~14.0–13.8 Ma) is indicated by widespread erosional features. Our results ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet McMurdo Sound Ross Sea Rice University: Digital Scholarship Archive Antarctic Drygalski ENVELOPE(-61.000,-61.000,-64.717,-64.717) McMurdo Sound Nordenskjöld ENVELOPE(-60.583,-60.583,-64.667,-64.667) Ross Sea The Antarctic Global and Planetary Change 216 103891 |
institution |
Open Polar |
collection |
Rice University: Digital Scholarship Archive |
op_collection_id |
ftriceuniv |
language |
English |
description |
The present-day morpho-stratigraphy of the Ross Sea is the result of Cenozoic tectonic and cryospheric events, and constitutes a key record of Antarctica's cryospheric evolution. An enduring problem in interpreting this record in a broader regional context is that the correlation between eastern and western Ross Sea stratigraphy has remained uncertain due to the limited number of drill sites. We correlate the glacial-related features observed on a dense network of seismic reflection profiles in McMurdo Sound with those identified in the Nordenskjöld and Drygalski Basins, as well as the basins farther east in the central Ross Sea. We present an improved correlation of the regional patterns of early to middle Miocene ice-sheet variance across the Ross Sea constrained by new evaluation of seismic facies and age models from one site recovered by the Antarctic Drilling Project (ANDRILL) in the southwestern most part of McMurdo Sound. We also integrate this correlation with the recently published seismic framework in the central Ross Sea. The formation of U-shaped valleys during the early Miocene in McMurdo Sound, together with prograding sedimentary wedges in the western-most basins, and the central Ross Sea, suggest two major phases of overall advance of a marine-terminating ice sheet between ~18 Ma and ~17.4 Ma. Widespread formation of turbiditic channel-levee systems in McMurdo Sound and rapid sediment deposition in Nordernskjöld Basin point to subsequent ice-sheet retreat between ~17.4 Ma and ~15.8 Ma, coinciding with the onset of the Miocene Climate Optimum (MCO; ~17–14.5 Ma). However, the carving of troughs and formation of irregular morphologic features suggest that an extensive ice sheet still remained along the western Ross margin at ~17.4 Ma and a brief episode of ice-sheet advance occurred at ~16.8 Ma in the earliest interval of the MCO. Subsequent marine-based ice sheet advance during the Middle Miocene Climate Transition (MMCT, ~14.0–13.8 Ma) is indicated by widespread erosional features. Our results ... |
format |
Article in Journal/Newspaper |
author |
Pérez, Lara F. McKay, Robert M. De Santis, Laura Larter, Robert D. Levy, Richard H. Naish, Timothy R. Anderson, John B. Bart, Philip J. Busetti, Martina Dunbar, Gavin Sauli, Chiara Sorlien, Christopher C. Speece, Marvin |
spellingShingle |
Pérez, Lara F. McKay, Robert M. De Santis, Laura Larter, Robert D. Levy, Richard H. Naish, Timothy R. Anderson, John B. Bart, Philip J. Busetti, Martina Dunbar, Gavin Sauli, Chiara Sorlien, Christopher C. Speece, Marvin Early to middle Miocene ice sheet dynamics in the westernmost Ross Sea (Antarctica): Regional correlations |
author_facet |
Pérez, Lara F. McKay, Robert M. De Santis, Laura Larter, Robert D. Levy, Richard H. Naish, Timothy R. Anderson, John B. Bart, Philip J. Busetti, Martina Dunbar, Gavin Sauli, Chiara Sorlien, Christopher C. Speece, Marvin |
author_sort |
Pérez, Lara F. |
title |
Early to middle Miocene ice sheet dynamics in the westernmost Ross Sea (Antarctica): Regional correlations |
title_short |
Early to middle Miocene ice sheet dynamics in the westernmost Ross Sea (Antarctica): Regional correlations |
title_full |
Early to middle Miocene ice sheet dynamics in the westernmost Ross Sea (Antarctica): Regional correlations |
title_fullStr |
Early to middle Miocene ice sheet dynamics in the westernmost Ross Sea (Antarctica): Regional correlations |
title_full_unstemmed |
Early to middle Miocene ice sheet dynamics in the westernmost Ross Sea (Antarctica): Regional correlations |
title_sort |
early to middle miocene ice sheet dynamics in the westernmost ross sea (antarctica): regional correlations |
publisher |
Elsevier |
publishDate |
2022 |
url |
https://hdl.handle.net/1911/113187 https://doi.org/10.1016/j.gloplacha.2022.103891 |
long_lat |
ENVELOPE(-61.000,-61.000,-64.717,-64.717) ENVELOPE(-60.583,-60.583,-64.667,-64.667) |
geographic |
Antarctic Drygalski McMurdo Sound Nordenskjöld Ross Sea The Antarctic |
geographic_facet |
Antarctic Drygalski McMurdo Sound Nordenskjöld Ross Sea The Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet McMurdo Sound Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet McMurdo Sound Ross Sea |
op_relation |
Pérez, Lara F., McKay, Robert M., De Santis, Laura, et al. "Early to middle Miocene ice sheet dynamics in the westernmost Ross Sea (Antarctica): Regional correlations." Global and Planetary Change, 216, (2022) Elsevier: https://doi.org/10.1016/j.gloplacha.2022.103891. https://hdl.handle.net/1911/113187 1-s2-0-S0921818122001588-main https://doi.org/10.1016/j.gloplacha.2022.103891 |
op_rights |
This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/) http://creativecommons.org/licenses/by/4.0/) |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1016/j.gloplacha.2022.103891 |
container_title |
Global and Planetary Change |
container_volume |
216 |
container_start_page |
103891 |
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1766208550934151168 |