The geology and geomorphology of the Denton Hills, Southern Victoria Land, Antarctica.
This research is an integrated geological and geomorphological study into the Denton Hills area. The study area is part of the foothills to the Transantarctic Mountains, which divides East and West Antarctica, allowing an opportunity to investigate glacial events from both sides. As the study area i...
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University of Canterbury. Geological Sciences
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ftdatacite:10.26021/8706 2023-05-15T13:35:41+02:00 The geology and geomorphology of the Denton Hills, Southern Victoria Land, Antarctica. Carson, Nicholas Joseph 2012 https://dx.doi.org/10.26021/8706 https://ir.canterbury.ac.nz/handle/10092/7467 unknown University of Canterbury. Geological Sciences Copyright Nicholas Joseph Carson https://canterbury.libguides.com/rights/theses Antarctica Geomorphology Geology FOS Earth and related environmental sciences Cosmogenic Dating Denton Hills Last Glaical Maximum CreativeWork article 2012 ftdatacite https://doi.org/10.26021/8706 2021-11-05T12:55:41Z This research is an integrated geological and geomorphological study into the Denton Hills area. The study area is part of the foothills to the Transantarctic Mountains, which divides East and West Antarctica, allowing an opportunity to investigate glacial events from both sides. As the study area is ice-free, it has allows good examination of the bedrock geology and has preserved geomorphological features allowing them to be examined and sampled. Comprehensive geological map and geomorphological maps have been produced, extending the knowledge into the spatial distribution of units and features. Both the geological and geomorphological maps reveal a complex history of evolution. The original geological units have been subjected to deformation and intrusion of large plutons. The geomorphological mapping shows ice has flowed in alternate direction through the valleys, and the valleys have had long periods where they have been occupied by large proglacial lakes. As the Antarctic ice sheets expanded they flowed into the valleys either from the west, the Royal Society Range draining the East Antarctic Ice Sheet or from the east, McMurdo Sound. Ice would flow from McMurdo Sound when the West Antarctic Ice Sheet expanded causing the grounding line of the ice sheet to move north through the Ross Sea. Surface exposure dating completed during the study has correlated the timing of glacial events to global cycles. The dating confirmed the presence of the large proglacial lake during the Last Glacial Maximum in the Miers Valley, which drained about 14 ka. The Garwood Glacier has also been directly linked to the Last Glacial Maximum with a moraine forming about 22 ka. The dating has also shown that during the Last Glacial Maximum there was little fluctuation in the size of glaciers draining the East Antarctic Ice Sheet, with features being date to the onset of the Last Glacial Maximum. Article in Journal/Newspaper Antarc* Antarctic Antarctica Garwood Glacier Ice Sheet McMurdo Sound Ross Sea Victoria Land West Antarctica DataCite Metadata Store (German National Library of Science and Technology) Antarctic The Antarctic Ross Sea West Antarctica Victoria Land West Antarctic Ice Sheet McMurdo Sound East Antarctic Ice Sheet Transantarctic Mountains Miers ENVELOPE(163.850,163.850,-78.100,-78.100) Miers Valley ENVELOPE(164.200,164.200,-78.100,-78.100) Garwood ENVELOPE(164.283,164.283,-78.033,-78.033) Royal Society Range ENVELOPE(162.667,162.667,-78.167,-78.167) Denton Hills ENVELOPE(163.917,163.917,-78.083,-78.083) Garwood Glacier ENVELOPE(163.950,163.950,-78.017,-78.017) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Antarctica Geomorphology Geology FOS Earth and related environmental sciences Cosmogenic Dating Denton Hills Last Glaical Maximum |
spellingShingle |
Antarctica Geomorphology Geology FOS Earth and related environmental sciences Cosmogenic Dating Denton Hills Last Glaical Maximum Carson, Nicholas Joseph The geology and geomorphology of the Denton Hills, Southern Victoria Land, Antarctica. |
topic_facet |
Antarctica Geomorphology Geology FOS Earth and related environmental sciences Cosmogenic Dating Denton Hills Last Glaical Maximum |
description |
This research is an integrated geological and geomorphological study into the Denton Hills area. The study area is part of the foothills to the Transantarctic Mountains, which divides East and West Antarctica, allowing an opportunity to investigate glacial events from both sides. As the study area is ice-free, it has allows good examination of the bedrock geology and has preserved geomorphological features allowing them to be examined and sampled. Comprehensive geological map and geomorphological maps have been produced, extending the knowledge into the spatial distribution of units and features. Both the geological and geomorphological maps reveal a complex history of evolution. The original geological units have been subjected to deformation and intrusion of large plutons. The geomorphological mapping shows ice has flowed in alternate direction through the valleys, and the valleys have had long periods where they have been occupied by large proglacial lakes. As the Antarctic ice sheets expanded they flowed into the valleys either from the west, the Royal Society Range draining the East Antarctic Ice Sheet or from the east, McMurdo Sound. Ice would flow from McMurdo Sound when the West Antarctic Ice Sheet expanded causing the grounding line of the ice sheet to move north through the Ross Sea. Surface exposure dating completed during the study has correlated the timing of glacial events to global cycles. The dating confirmed the presence of the large proglacial lake during the Last Glacial Maximum in the Miers Valley, which drained about 14 ka. The Garwood Glacier has also been directly linked to the Last Glacial Maximum with a moraine forming about 22 ka. The dating has also shown that during the Last Glacial Maximum there was little fluctuation in the size of glaciers draining the East Antarctic Ice Sheet, with features being date to the onset of the Last Glacial Maximum. |
format |
Article in Journal/Newspaper |
author |
Carson, Nicholas Joseph |
author_facet |
Carson, Nicholas Joseph |
author_sort |
Carson, Nicholas Joseph |
title |
The geology and geomorphology of the Denton Hills, Southern Victoria Land, Antarctica. |
title_short |
The geology and geomorphology of the Denton Hills, Southern Victoria Land, Antarctica. |
title_full |
The geology and geomorphology of the Denton Hills, Southern Victoria Land, Antarctica. |
title_fullStr |
The geology and geomorphology of the Denton Hills, Southern Victoria Land, Antarctica. |
title_full_unstemmed |
The geology and geomorphology of the Denton Hills, Southern Victoria Land, Antarctica. |
title_sort |
geology and geomorphology of the denton hills, southern victoria land, antarctica. |
publisher |
University of Canterbury. Geological Sciences |
publishDate |
2012 |
url |
https://dx.doi.org/10.26021/8706 https://ir.canterbury.ac.nz/handle/10092/7467 |
long_lat |
ENVELOPE(163.850,163.850,-78.100,-78.100) ENVELOPE(164.200,164.200,-78.100,-78.100) ENVELOPE(164.283,164.283,-78.033,-78.033) ENVELOPE(162.667,162.667,-78.167,-78.167) ENVELOPE(163.917,163.917,-78.083,-78.083) ENVELOPE(163.950,163.950,-78.017,-78.017) |
geographic |
Antarctic The Antarctic Ross Sea West Antarctica Victoria Land West Antarctic Ice Sheet McMurdo Sound East Antarctic Ice Sheet Transantarctic Mountains Miers Miers Valley Garwood Royal Society Range Denton Hills Garwood Glacier |
geographic_facet |
Antarctic The Antarctic Ross Sea West Antarctica Victoria Land West Antarctic Ice Sheet McMurdo Sound East Antarctic Ice Sheet Transantarctic Mountains Miers Miers Valley Garwood Royal Society Range Denton Hills Garwood Glacier |
genre |
Antarc* Antarctic Antarctica Garwood Glacier Ice Sheet McMurdo Sound Ross Sea Victoria Land West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Garwood Glacier Ice Sheet McMurdo Sound Ross Sea Victoria Land West Antarctica |
op_rights |
Copyright Nicholas Joseph Carson https://canterbury.libguides.com/rights/theses |
op_doi |
https://doi.org/10.26021/8706 |
_version_ |
1766068961534803968 |