Reconstruction of ice flow across the Bunger Hills, East Antarctica
In the Bunger Hills, mapping of glacial drift sheets and examination of striae patterns and other palaeo-ice flow direction indicators show that the largely ice-free region records the imprint of ice sheet expansion(s) during the late Cenozoic. In particular, ice moulded features and striae in south...
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1997
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crcambridgeupr:10.1017/s0954102097000424 2024-03-03T08:38:04+00:00 Reconstruction of ice flow across the Bunger Hills, East Antarctica Augustinus, Paul C. Gore, Damian B. Leishman, Michelle R. Zwartz, Dan Colhoun, Eric A. 1997 http://dx.doi.org/10.1017/s0954102097000424 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102097000424 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 9, issue 3, page 347-354 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 1997 crcambridgeupr https://doi.org/10.1017/s0954102097000424 2024-02-08T08:36:03Z In the Bunger Hills, mapping of glacial drift sheets and examination of striae patterns and other palaeo-ice flow direction indicators show that the largely ice-free region records the imprint of ice sheet expansion(s) during the late Cenozoic. In particular, ice moulded features and striae in southern Bunger Hills suggest formation during at least two episodes of ice sheet expansion, although whether they were formed during separate events or merely different phases of the same expansion of the ice sheet is not able to be discerned at present. The older event relates to thin ice with flow constrained by the topography, whilst the younger event relates to regional expansion of thick ice across the area. Discrimination of the order of emplacement of the cross-cutting striae patterns is possible at a number of sites. Palaeo-ice flow indicators confirm that ice sheet expansion over southern Bunger Hills was purely from the southern and eastern margins, although minor advances of the north-east flowing Edisto Glacier onto coastal areas occurred following retreat of the last extensive ice sheet phase. Article in Journal/Newspaper Antarc* Antarctic Science Antarctica East Antarctica Ice Sheet Cambridge University Press East Antarctica Bunger Hills ENVELOPE(100.883,100.883,-66.167,-66.167) Edisto ENVELOPE(-67.133,-67.133,-68.217,-68.217) Antarctic Science 9 3 347 354 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Augustinus, Paul C. Gore, Damian B. Leishman, Michelle R. Zwartz, Dan Colhoun, Eric A. Reconstruction of ice flow across the Bunger Hills, East Antarctica |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
In the Bunger Hills, mapping of glacial drift sheets and examination of striae patterns and other palaeo-ice flow direction indicators show that the largely ice-free region records the imprint of ice sheet expansion(s) during the late Cenozoic. In particular, ice moulded features and striae in southern Bunger Hills suggest formation during at least two episodes of ice sheet expansion, although whether they were formed during separate events or merely different phases of the same expansion of the ice sheet is not able to be discerned at present. The older event relates to thin ice with flow constrained by the topography, whilst the younger event relates to regional expansion of thick ice across the area. Discrimination of the order of emplacement of the cross-cutting striae patterns is possible at a number of sites. Palaeo-ice flow indicators confirm that ice sheet expansion over southern Bunger Hills was purely from the southern and eastern margins, although minor advances of the north-east flowing Edisto Glacier onto coastal areas occurred following retreat of the last extensive ice sheet phase. |
format |
Article in Journal/Newspaper |
author |
Augustinus, Paul C. Gore, Damian B. Leishman, Michelle R. Zwartz, Dan Colhoun, Eric A. |
author_facet |
Augustinus, Paul C. Gore, Damian B. Leishman, Michelle R. Zwartz, Dan Colhoun, Eric A. |
author_sort |
Augustinus, Paul C. |
title |
Reconstruction of ice flow across the Bunger Hills, East Antarctica |
title_short |
Reconstruction of ice flow across the Bunger Hills, East Antarctica |
title_full |
Reconstruction of ice flow across the Bunger Hills, East Antarctica |
title_fullStr |
Reconstruction of ice flow across the Bunger Hills, East Antarctica |
title_full_unstemmed |
Reconstruction of ice flow across the Bunger Hills, East Antarctica |
title_sort |
reconstruction of ice flow across the bunger hills, east antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
1997 |
url |
http://dx.doi.org/10.1017/s0954102097000424 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102097000424 |
long_lat |
ENVELOPE(100.883,100.883,-66.167,-66.167) ENVELOPE(-67.133,-67.133,-68.217,-68.217) |
geographic |
East Antarctica Bunger Hills Edisto |
geographic_facet |
East Antarctica Bunger Hills Edisto |
genre |
Antarc* Antarctic Science Antarctica East Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Science Antarctica East Antarctica Ice Sheet |
op_source |
Antarctic Science volume 9, issue 3, page 347-354 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102097000424 |
container_title |
Antarctic Science |
container_volume |
9 |
container_issue |
3 |
container_start_page |
347 |
op_container_end_page |
354 |
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1792504285339058176 |