Early and middle Miocene ice sheet dynamics in the Ross Sea : Results from integrated core-log-seismic interpretation
Oscillations in ice sheet extent during early and middle Miocene are intermittently preserved in the sedimentary record from the Antarctic continental shelf, with widespread erosion occurring during major ice sheet advances, and open marine deposition during times of ice sheet retreat. Data from sei...
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
---|---|
Other Authors: | , |
Language: | English |
Published: |
2022
|
Subjects: | |
Online Access: | https://dspace.library.uu.nl/handle/1874/413033 |
id |
ftunivutrecht:oai:dspace.library.uu.nl:1874/413033 |
---|---|
record_format |
openpolar |
spelling |
ftunivutrecht:oai:dspace.library.uu.nl:1874/413033 2023-12-10T09:41:54+01:00 Early and middle Miocene ice sheet dynamics in the Ross Sea : Results from integrated core-log-seismic interpretation Pérez, Lara F. De Santis, Laura McKay, R. Larter, Robert D. Ash, Jeanine Bart, Phil J. Böhm, Gualtiero Brancatelli, Giuseppe Browne, Imogen B. Colleoni, Florence Dodd, J.P. Geletti, Riccardo Harwood, D.M. Kuhn, G. Laberg, Jan Sverre Leckie, R. Mark Levy, R.H. Marschalek, James Mateo, Zenon Naish, Timothy Sangiorgi, Francesca Shevenell, Amelia Sorlien, Christopher C. Van De Flierdt, Tina IODP Expedition 374 Scientists Marine palynology and palaeoceanography Marine Palynology 2022 application/pdf https://dspace.library.uu.nl/handle/1874/413033 eng eng https://dspace.library.uu.nl/handle/1874/413033 info:eu-repo/semantics/OpenAccess 2022 ftunivutrecht 2023-11-15T23:18:34Z Oscillations in ice sheet extent during early and middle Miocene are intermittently preserved in the sedimentary record from the Antarctic continental shelf, with widespread erosion occurring during major ice sheet advances, and open marine deposition during times of ice sheet retreat. Data from seismic reflection surveys and drill sites from Deep Sea Drilling Project Leg 28 and International Ocean Discovery Program Expedition 374, located across the present-day middle continental shelf of the central Ross Sea (Antarctica), indicate the presence of expanded early to middle Miocene sedimentary sections. These include the Miocene climate optimum (MCO ca. 17–14.6 Ma) and the middle Miocene climate transition (MMCT ca. 14.6–13.9 Ma). Here, we correlate drill core records, wireline logs and reflection seismic data to elucidate the depositional architecture of the continental shelf and reconstruct the evolution and variability of dynamic ice sheets in the Ross Sea during the Miocene. Drill-site data are used to constrain seismic isopach maps that document the evolution of different ice sheets and ice caps which influenced sedimentary processes in the Ross Sea through the early to middle Miocene. In the early Miocene, periods of localized advance of the ice margin are revealed by the formation of thick sediment wedges prograding into the basins. At this time, morainal bank complexes are distinguished along the basin margins suggesting sediment supply derived from marine-terminating glaciers. During the MCO, biosiliceous-bearing sediments are regionally mapped within the depocenters of the major sedimentary basin across the Ross Sea, indicative of widespread open marine deposition with reduced glacimarine influence. At the MMCT, a distinct erosive surface is interpreted as representing large-scale marine-based ice sheet advance over most of the Ross Sea paleo-continental shelf. The regional mapping of the seismic stratigraphic architecture and its correlation to drilling data indicate a regional transition through the ... Other/Unknown Material Antarc* Antarctic Antarctica Ice Sheet Ross Sea Utrecht University Repository Antarctic Ross Sea The Antarctic |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
description |
Oscillations in ice sheet extent during early and middle Miocene are intermittently preserved in the sedimentary record from the Antarctic continental shelf, with widespread erosion occurring during major ice sheet advances, and open marine deposition during times of ice sheet retreat. Data from seismic reflection surveys and drill sites from Deep Sea Drilling Project Leg 28 and International Ocean Discovery Program Expedition 374, located across the present-day middle continental shelf of the central Ross Sea (Antarctica), indicate the presence of expanded early to middle Miocene sedimentary sections. These include the Miocene climate optimum (MCO ca. 17–14.6 Ma) and the middle Miocene climate transition (MMCT ca. 14.6–13.9 Ma). Here, we correlate drill core records, wireline logs and reflection seismic data to elucidate the depositional architecture of the continental shelf and reconstruct the evolution and variability of dynamic ice sheets in the Ross Sea during the Miocene. Drill-site data are used to constrain seismic isopach maps that document the evolution of different ice sheets and ice caps which influenced sedimentary processes in the Ross Sea through the early to middle Miocene. In the early Miocene, periods of localized advance of the ice margin are revealed by the formation of thick sediment wedges prograding into the basins. At this time, morainal bank complexes are distinguished along the basin margins suggesting sediment supply derived from marine-terminating glaciers. During the MCO, biosiliceous-bearing sediments are regionally mapped within the depocenters of the major sedimentary basin across the Ross Sea, indicative of widespread open marine deposition with reduced glacimarine influence. At the MMCT, a distinct erosive surface is interpreted as representing large-scale marine-based ice sheet advance over most of the Ross Sea paleo-continental shelf. The regional mapping of the seismic stratigraphic architecture and its correlation to drilling data indicate a regional transition through the ... |
author2 |
Marine palynology and palaeoceanography Marine Palynology |
author |
Pérez, Lara F. De Santis, Laura McKay, R. Larter, Robert D. Ash, Jeanine Bart, Phil J. Böhm, Gualtiero Brancatelli, Giuseppe Browne, Imogen B. Colleoni, Florence Dodd, J.P. Geletti, Riccardo Harwood, D.M. Kuhn, G. Laberg, Jan Sverre Leckie, R. Mark Levy, R.H. Marschalek, James Mateo, Zenon Naish, Timothy Sangiorgi, Francesca Shevenell, Amelia Sorlien, Christopher C. Van De Flierdt, Tina IODP Expedition 374 Scientists |
spellingShingle |
Pérez, Lara F. De Santis, Laura McKay, R. Larter, Robert D. Ash, Jeanine Bart, Phil J. Böhm, Gualtiero Brancatelli, Giuseppe Browne, Imogen B. Colleoni, Florence Dodd, J.P. Geletti, Riccardo Harwood, D.M. Kuhn, G. Laberg, Jan Sverre Leckie, R. Mark Levy, R.H. Marschalek, James Mateo, Zenon Naish, Timothy Sangiorgi, Francesca Shevenell, Amelia Sorlien, Christopher C. Van De Flierdt, Tina IODP Expedition 374 Scientists Early and middle Miocene ice sheet dynamics in the Ross Sea : Results from integrated core-log-seismic interpretation |
author_facet |
Pérez, Lara F. De Santis, Laura McKay, R. Larter, Robert D. Ash, Jeanine Bart, Phil J. Böhm, Gualtiero Brancatelli, Giuseppe Browne, Imogen B. Colleoni, Florence Dodd, J.P. Geletti, Riccardo Harwood, D.M. Kuhn, G. Laberg, Jan Sverre Leckie, R. Mark Levy, R.H. Marschalek, James Mateo, Zenon Naish, Timothy Sangiorgi, Francesca Shevenell, Amelia Sorlien, Christopher C. Van De Flierdt, Tina IODP Expedition 374 Scientists |
author_sort |
Pérez, Lara F. |
title |
Early and middle Miocene ice sheet dynamics in the Ross Sea : Results from integrated core-log-seismic interpretation |
title_short |
Early and middle Miocene ice sheet dynamics in the Ross Sea : Results from integrated core-log-seismic interpretation |
title_full |
Early and middle Miocene ice sheet dynamics in the Ross Sea : Results from integrated core-log-seismic interpretation |
title_fullStr |
Early and middle Miocene ice sheet dynamics in the Ross Sea : Results from integrated core-log-seismic interpretation |
title_full_unstemmed |
Early and middle Miocene ice sheet dynamics in the Ross Sea : Results from integrated core-log-seismic interpretation |
title_sort |
early and middle miocene ice sheet dynamics in the ross sea : results from integrated core-log-seismic interpretation |
publishDate |
2022 |
url |
https://dspace.library.uu.nl/handle/1874/413033 |
geographic |
Antarctic Ross Sea The Antarctic |
geographic_facet |
Antarctic Ross Sea The Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Ross Sea |
op_relation |
https://dspace.library.uu.nl/handle/1874/413033 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1784884601841254400 |