East Antarctic continental shelf:Prydz Bay and the Mac. Robertson Land Shelf
Prydz Bay and the Mac. Robertson Land Shelf exhibit many of the variations seen on Antarctic continental shelves. The Mac. Robertson shelf is relatively narrow with rugged, inner-shelf topography and shallow outer-shelf banks swept by the west-flowing Antarctic Coastal Current. U-shaped valleys cut...
Published in: | Geological Society, London, Memoirs |
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Geological Society of London
2014
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Online Access: | https://researchers.mq.edu.au/en/publications/c2b3cb52-601e-47a9-8975-41ae015ecf1b https://doi.org/10.1144/M41.18 http://www.scopus.com/inward/record.url?scp=84929855753&partnerID=8YFLogxK |
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/c2b3cb52-601e-47a9-8975-41ae015ecf1b 2024-06-02T07:54:55+00:00 East Antarctic continental shelf:Prydz Bay and the Mac. Robertson Land Shelf O'Brien, P. E. Harris, P. T. Post, A. L. Young, N. Chiocci, F. L. Chivas, A. R 2014 https://researchers.mq.edu.au/en/publications/c2b3cb52-601e-47a9-8975-41ae015ecf1b https://doi.org/10.1144/M41.18 http://www.scopus.com/inward/record.url?scp=84929855753&partnerID=8YFLogxK eng eng Geological Society of London info:eu-repo/semantics/closedAccess O'Brien , P E , Harris , P T , Post , A L & Young , N 2014 , East Antarctic continental shelf : Prydz Bay and the Mac. Robertson Land Shelf . in F L Chiocci & A R Chivas (eds) , Continental shelves of the world : their evolution during the last glacio-eustatic cycle . Geological Society memoir , no. 41 , Geological Society of London , Bath, UK , pp. 241-254 . https://doi.org/10.1144/M41.18 bookPart 2014 ftmacquarieunicr https://doi.org/10.1144/M41.18 2024-05-07T03:23:30Z Prydz Bay and the Mac. Robertson Land Shelf exhibit many of the variations seen on Antarctic continental shelves. The Mac. Robertson shelf is relatively narrow with rugged, inner-shelf topography and shallow outer-shelf banks swept by the west-flowing Antarctic Coastal Current. U-shaped valleys cut across the shelf. It has thin sedimentary cover, deposited and eroded by cycles of glacial advance and retreat through the Neogene and Quaternary. Modern sedimentation is diatom-rich siliceous, muddy ooze in shelf deeps, while, on the banks, phytodetritus, calcareous bioclasts and terrigenous material are mixed by iceberg ploughing. Prydz Bay is a large embayment fed by the Amery Ice Shelf. It has a broad inner-shelf deep area and outer bank, with depths ranging from 2400 m beneath the ice shelf to 100 m on the outer banks. A clockwise gyre flows through the bay. Fine mud and siliceous ooze drape the seafloor; however, banks are scoured by icebergs to depths as great as 500 m. The Mac. Robertson shelf has seen advances to the shelf edge during glacial episodes and retreat during warming and rising sea level. Prydz Bay shows more complexity, with parts of the bay showing partial advance of the ice-grounding zone. Book Part Amery Ice Shelf Antarc* Antarctic Ice Shelf Iceberg* Mac Robertson Land Mac. Robertson Land Prydz Bay Macquarie University Research Portal Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Amery Ice Shelf ENVELOPE(71.000,71.000,-69.750,-69.750) Antarctic Mac. Robertson Land ENVELOPE(65.000,65.000,-70.000,-70.000) Prydz Bay Geological Society, London, Memoirs 41 1 241 254 |
institution |
Open Polar |
collection |
Macquarie University Research Portal |
op_collection_id |
ftmacquarieunicr |
language |
English |
description |
Prydz Bay and the Mac. Robertson Land Shelf exhibit many of the variations seen on Antarctic continental shelves. The Mac. Robertson shelf is relatively narrow with rugged, inner-shelf topography and shallow outer-shelf banks swept by the west-flowing Antarctic Coastal Current. U-shaped valleys cut across the shelf. It has thin sedimentary cover, deposited and eroded by cycles of glacial advance and retreat through the Neogene and Quaternary. Modern sedimentation is diatom-rich siliceous, muddy ooze in shelf deeps, while, on the banks, phytodetritus, calcareous bioclasts and terrigenous material are mixed by iceberg ploughing. Prydz Bay is a large embayment fed by the Amery Ice Shelf. It has a broad inner-shelf deep area and outer bank, with depths ranging from 2400 m beneath the ice shelf to 100 m on the outer banks. A clockwise gyre flows through the bay. Fine mud and siliceous ooze drape the seafloor; however, banks are scoured by icebergs to depths as great as 500 m. The Mac. Robertson shelf has seen advances to the shelf edge during glacial episodes and retreat during warming and rising sea level. Prydz Bay shows more complexity, with parts of the bay showing partial advance of the ice-grounding zone. |
author2 |
Chiocci, F. L. Chivas, A. R |
format |
Book Part |
author |
O'Brien, P. E. Harris, P. T. Post, A. L. Young, N. |
spellingShingle |
O'Brien, P. E. Harris, P. T. Post, A. L. Young, N. East Antarctic continental shelf:Prydz Bay and the Mac. Robertson Land Shelf |
author_facet |
O'Brien, P. E. Harris, P. T. Post, A. L. Young, N. |
author_sort |
O'Brien, P. E. |
title |
East Antarctic continental shelf:Prydz Bay and the Mac. Robertson Land Shelf |
title_short |
East Antarctic continental shelf:Prydz Bay and the Mac. Robertson Land Shelf |
title_full |
East Antarctic continental shelf:Prydz Bay and the Mac. Robertson Land Shelf |
title_fullStr |
East Antarctic continental shelf:Prydz Bay and the Mac. Robertson Land Shelf |
title_full_unstemmed |
East Antarctic continental shelf:Prydz Bay and the Mac. Robertson Land Shelf |
title_sort |
east antarctic continental shelf:prydz bay and the mac. robertson land shelf |
publisher |
Geological Society of London |
publishDate |
2014 |
url |
https://researchers.mq.edu.au/en/publications/c2b3cb52-601e-47a9-8975-41ae015ecf1b https://doi.org/10.1144/M41.18 http://www.scopus.com/inward/record.url?scp=84929855753&partnerID=8YFLogxK |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(71.000,71.000,-69.750,-69.750) ENVELOPE(65.000,65.000,-70.000,-70.000) |
geographic |
Amery Amery Ice Shelf Antarctic Mac. Robertson Land Prydz Bay |
geographic_facet |
Amery Amery Ice Shelf Antarctic Mac. Robertson Land Prydz Bay |
genre |
Amery Ice Shelf Antarc* Antarctic Ice Shelf Iceberg* Mac Robertson Land Mac. Robertson Land Prydz Bay |
genre_facet |
Amery Ice Shelf Antarc* Antarctic Ice Shelf Iceberg* Mac Robertson Land Mac. Robertson Land Prydz Bay |
op_source |
O'Brien , P E , Harris , P T , Post , A L & Young , N 2014 , East Antarctic continental shelf : Prydz Bay and the Mac. Robertson Land Shelf . in F L Chiocci & A R Chivas (eds) , Continental shelves of the world : their evolution during the last glacio-eustatic cycle . Geological Society memoir , no. 41 , Geological Society of London , Bath, UK , pp. 241-254 . https://doi.org/10.1144/M41.18 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1144/M41.18 |
container_title |
Geological Society, London, Memoirs |
container_volume |
41 |
container_issue |
1 |
container_start_page |
241 |
op_container_end_page |
254 |
_version_ |
1800744353478475776 |