Terrestrial and submarine evidence for the extent and timing of the last glacial maximum and the onset of deglaciation on the maritime-Antarctic and sub-Antarctic islands
This paper is the maritime and sub-Antarctic contribution to the Scientific Committee for Antarctic Research (SCAR) Past Antarctic Ice Sheet Dynamics (PAIS) community Antarctic Ice Sheet reconstruction. The overarching aim for all sectors of Antarctica was to reconstruct the Last Glacial Maximum (LG...
Main Authors: | , , , , , , , , , , , , , , , , , , , , , |
---|---|
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Pergamon Press
2014
|
Subjects: | |
Online Access: | http://hdl.handle.net/1959.13/1304134 |
id |
ftunivnewcastnsw:uon:20805 |
---|---|
record_format |
openpolar |
spelling |
ftunivnewcastnsw:uon:20805 2023-05-15T13:54:38+02:00 Terrestrial and submarine evidence for the extent and timing of the last glacial maximum and the onset of deglaciation on the maritime-Antarctic and sub-Antarctic islands Hodgson, Dominic A. Graham, Alastair G. C. Verfaillie, Deborah Colhoun, Eric A. Saunders, Krystyna M. Selkirk, Patrick M. Mackintosh, Andrew Hedding, David W. Nel, Werner Hall, Kevin McGlone, Matt S. Van der Putten, Nathalie Roberts, Stephen J. Dickens, William A. Smith, James A. Bentley, Michael J. Cofaigh, Colm Ó Verleyen, Elie Vyverman, Wim Jomelli, Vincent Favier, Vincent Brunstein, Daniel The University of Newcastle. Faculty of Science & Information Technology, Faculty of Science and Information Technology 2014 http://hdl.handle.net/1959.13/1304134 eng eng Pergamon Press Quaternary Science Reviews Vol. 100, p. 137-158 10.1016/j.quascirev.2013.12.001 Antartic ice sheet sub-Antartica maritime Antartica glaciation deglaciation quaternary climate journal article 2014 ftunivnewcastnsw 2018-07-27T00:45:10Z This paper is the maritime and sub-Antarctic contribution to the Scientific Committee for Antarctic Research (SCAR) Past Antarctic Ice Sheet Dynamics (PAIS) community Antarctic Ice Sheet reconstruction. The overarching aim for all sectors of Antarctica was to reconstruct the Last Glacial Maximum (LGM) ice sheet extent and thickness, and map the subsequent deglaciation in a series of 5000 year time slices. However, our review of the literature found surprisingly few high quality chronological constraints on changing glacier extents on these timescales in the maritime and sub-Antarctic sector. Therefore, in this paper we focus on an assessment of the terrestrial and offshore evidence for the LGM ice extent, establishing minimum ages for the onset of deglaciation, and separating evidence of deglaciation from LGM limits from those associated with later Holocene glacier fluctuations. Evidence included geomorphological descriptions of glacial landscapes, radiocarbon dated basal peat and lake sediment deposits, cosmogenic isotope ages of glacial features and molecular biological data. We propose a classification of the glacial history of the maritime and sub-Antarctic islands based on this assembled evidence. These include: (Type I) islands which accumulated little or no LGM ice; (Type II) islands with a limited LGM ice extent but evidence of extensive earlier continental shelf glaciations; (Type III) seamounts and volcanoes unlikely to have accumulated significant LGM ice cover; (Type IV) islands on shallow shelves with both terrestrial and submarine evidence of LGM (and/or earlier) ice expansion; (Type V) Islands north of the Antarctic Polar Front with terrestrial evidence of LGM ice expansion; and (Type VI) islands with no data. Finally, we review the climatological and geomorphological settings that separate the glaciological history of the islands within this classification scheme. Article in Journal/Newspaper Antarc* Antarctic Antarctica antartic* Ice Sheet SCAR NOVA: The University of Newcastle Research Online (Australia) Antarctic The Antarctic |
institution |
Open Polar |
collection |
NOVA: The University of Newcastle Research Online (Australia) |
op_collection_id |
ftunivnewcastnsw |
language |
English |
topic |
Antartic ice sheet sub-Antartica maritime Antartica glaciation deglaciation quaternary climate |
spellingShingle |
Antartic ice sheet sub-Antartica maritime Antartica glaciation deglaciation quaternary climate Hodgson, Dominic A. Graham, Alastair G. C. Verfaillie, Deborah Colhoun, Eric A. Saunders, Krystyna M. Selkirk, Patrick M. Mackintosh, Andrew Hedding, David W. Nel, Werner Hall, Kevin McGlone, Matt S. Van der Putten, Nathalie Roberts, Stephen J. Dickens, William A. Smith, James A. Bentley, Michael J. Cofaigh, Colm Ó Verleyen, Elie Vyverman, Wim Jomelli, Vincent Favier, Vincent Brunstein, Daniel Terrestrial and submarine evidence for the extent and timing of the last glacial maximum and the onset of deglaciation on the maritime-Antarctic and sub-Antarctic islands |
topic_facet |
Antartic ice sheet sub-Antartica maritime Antartica glaciation deglaciation quaternary climate |
description |
This paper is the maritime and sub-Antarctic contribution to the Scientific Committee for Antarctic Research (SCAR) Past Antarctic Ice Sheet Dynamics (PAIS) community Antarctic Ice Sheet reconstruction. The overarching aim for all sectors of Antarctica was to reconstruct the Last Glacial Maximum (LGM) ice sheet extent and thickness, and map the subsequent deglaciation in a series of 5000 year time slices. However, our review of the literature found surprisingly few high quality chronological constraints on changing glacier extents on these timescales in the maritime and sub-Antarctic sector. Therefore, in this paper we focus on an assessment of the terrestrial and offshore evidence for the LGM ice extent, establishing minimum ages for the onset of deglaciation, and separating evidence of deglaciation from LGM limits from those associated with later Holocene glacier fluctuations. Evidence included geomorphological descriptions of glacial landscapes, radiocarbon dated basal peat and lake sediment deposits, cosmogenic isotope ages of glacial features and molecular biological data. We propose a classification of the glacial history of the maritime and sub-Antarctic islands based on this assembled evidence. These include: (Type I) islands which accumulated little or no LGM ice; (Type II) islands with a limited LGM ice extent but evidence of extensive earlier continental shelf glaciations; (Type III) seamounts and volcanoes unlikely to have accumulated significant LGM ice cover; (Type IV) islands on shallow shelves with both terrestrial and submarine evidence of LGM (and/or earlier) ice expansion; (Type V) Islands north of the Antarctic Polar Front with terrestrial evidence of LGM ice expansion; and (Type VI) islands with no data. Finally, we review the climatological and geomorphological settings that separate the glaciological history of the islands within this classification scheme. |
author2 |
The University of Newcastle. Faculty of Science & Information Technology, Faculty of Science and Information Technology |
format |
Article in Journal/Newspaper |
author |
Hodgson, Dominic A. Graham, Alastair G. C. Verfaillie, Deborah Colhoun, Eric A. Saunders, Krystyna M. Selkirk, Patrick M. Mackintosh, Andrew Hedding, David W. Nel, Werner Hall, Kevin McGlone, Matt S. Van der Putten, Nathalie Roberts, Stephen J. Dickens, William A. Smith, James A. Bentley, Michael J. Cofaigh, Colm Ó Verleyen, Elie Vyverman, Wim Jomelli, Vincent Favier, Vincent Brunstein, Daniel |
author_facet |
Hodgson, Dominic A. Graham, Alastair G. C. Verfaillie, Deborah Colhoun, Eric A. Saunders, Krystyna M. Selkirk, Patrick M. Mackintosh, Andrew Hedding, David W. Nel, Werner Hall, Kevin McGlone, Matt S. Van der Putten, Nathalie Roberts, Stephen J. Dickens, William A. Smith, James A. Bentley, Michael J. Cofaigh, Colm Ó Verleyen, Elie Vyverman, Wim Jomelli, Vincent Favier, Vincent Brunstein, Daniel |
author_sort |
Hodgson, Dominic A. |
title |
Terrestrial and submarine evidence for the extent and timing of the last glacial maximum and the onset of deglaciation on the maritime-Antarctic and sub-Antarctic islands |
title_short |
Terrestrial and submarine evidence for the extent and timing of the last glacial maximum and the onset of deglaciation on the maritime-Antarctic and sub-Antarctic islands |
title_full |
Terrestrial and submarine evidence for the extent and timing of the last glacial maximum and the onset of deglaciation on the maritime-Antarctic and sub-Antarctic islands |
title_fullStr |
Terrestrial and submarine evidence for the extent and timing of the last glacial maximum and the onset of deglaciation on the maritime-Antarctic and sub-Antarctic islands |
title_full_unstemmed |
Terrestrial and submarine evidence for the extent and timing of the last glacial maximum and the onset of deglaciation on the maritime-Antarctic and sub-Antarctic islands |
title_sort |
terrestrial and submarine evidence for the extent and timing of the last glacial maximum and the onset of deglaciation on the maritime-antarctic and sub-antarctic islands |
publisher |
Pergamon Press |
publishDate |
2014 |
url |
http://hdl.handle.net/1959.13/1304134 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica antartic* Ice Sheet SCAR |
genre_facet |
Antarc* Antarctic Antarctica antartic* Ice Sheet SCAR |
op_relation |
Quaternary Science Reviews Vol. 100, p. 137-158 10.1016/j.quascirev.2013.12.001 |
_version_ |
1766260702661574656 |