Mega-Scale Glacial Lineations and Grounding-Zone Wedges in Prydz Channel, East Antarctica
The Prydz Bay continental shelf was sculpted by the Lambert Glacier–Amery Ice Shelf system, a large outlet glacier that drains 16% of the East Antarctic Ice Sheet (Allison 1979; Fig. 1a). Prydz Channel (71–73° E; Fig. 1b) is a NW-trending cross-shelf trough (500–700 m deep) in western Prydz Bay that...
Published in: | Geological Society, London, Memoirs |
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Online Access: | https://digitalcommons.usf.edu/msc_facpub/594 https://doi.org/10.1144/M46.110 |
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ftusouthflorida:oai:digitalcommons.usf.edu:msc_facpub-1566 2023-07-30T03:55:57+02:00 Mega-Scale Glacial Lineations and Grounding-Zone Wedges in Prydz Channel, East Antarctica Guitard, Michelle E. Shevenell, Amelia E. Lavoie, Caroline Domack, Eugene W. 2016-01-01T08:00:00Z https://digitalcommons.usf.edu/msc_facpub/594 https://doi.org/10.1144/M46.110 unknown Digital Commons @ University of South Florida https://digitalcommons.usf.edu/msc_facpub/594 doi:10.1144/M46.110 https://doi.org/10.1144/M46.110 Marine Science Faculty Publications Life Sciences book_chapter 2016 ftusouthflorida https://doi.org/10.1144/M46.110 2023-07-13T20:45:14Z The Prydz Bay continental shelf was sculpted by the Lambert Glacier–Amery Ice Shelf system, a large outlet glacier that drains 16% of the East Antarctic Ice Sheet (Allison 1979; Fig. 1a). Prydz Channel (71–73° E; Fig. 1b) is a NW-trending cross-shelf trough (500–700 m deep) in western Prydz Bay that formed in the Pliocene, when the Lambert-Amery system first developed a fast-flowing ice stream (Fig. 1b; Cooper & O'Brien 2004). In Prydz Channel mega-scale glacial lineations (MSGLs) delineate the direction and orientation of past ice flow, and large grounding-zone wedges (GZWs; Batchelor & Dowdeswell 2015) in the inner channel mark the limit of the Last Glacial Maximum (LGM) ice advance about 250 km from the shelf edge (Fig. 1c, d, e). Book Part Amery Ice Shelf Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelf Lambert Glacier Prydz Bay University of South Florida St. Petersburg: Digital USFSP Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Amery Ice Shelf ENVELOPE(71.000,71.000,-69.750,-69.750) Antarctic East Antarctic Ice Sheet East Antarctica Lambert Glacier ENVELOPE(67.490,67.490,-73.065,-73.065) Prydz Bay Prydz Channel ENVELOPE(73.000,73.000,-67.000,-67.000) Geological Society, London, Memoirs 46 1 185 186 |
institution |
Open Polar |
collection |
University of South Florida St. Petersburg: Digital USFSP |
op_collection_id |
ftusouthflorida |
language |
unknown |
topic |
Life Sciences |
spellingShingle |
Life Sciences Guitard, Michelle E. Shevenell, Amelia E. Lavoie, Caroline Domack, Eugene W. Mega-Scale Glacial Lineations and Grounding-Zone Wedges in Prydz Channel, East Antarctica |
topic_facet |
Life Sciences |
description |
The Prydz Bay continental shelf was sculpted by the Lambert Glacier–Amery Ice Shelf system, a large outlet glacier that drains 16% of the East Antarctic Ice Sheet (Allison 1979; Fig. 1a). Prydz Channel (71–73° E; Fig. 1b) is a NW-trending cross-shelf trough (500–700 m deep) in western Prydz Bay that formed in the Pliocene, when the Lambert-Amery system first developed a fast-flowing ice stream (Fig. 1b; Cooper & O'Brien 2004). In Prydz Channel mega-scale glacial lineations (MSGLs) delineate the direction and orientation of past ice flow, and large grounding-zone wedges (GZWs; Batchelor & Dowdeswell 2015) in the inner channel mark the limit of the Last Glacial Maximum (LGM) ice advance about 250 km from the shelf edge (Fig. 1c, d, e). |
format |
Book Part |
author |
Guitard, Michelle E. Shevenell, Amelia E. Lavoie, Caroline Domack, Eugene W. |
author_facet |
Guitard, Michelle E. Shevenell, Amelia E. Lavoie, Caroline Domack, Eugene W. |
author_sort |
Guitard, Michelle E. |
title |
Mega-Scale Glacial Lineations and Grounding-Zone Wedges in Prydz Channel, East Antarctica |
title_short |
Mega-Scale Glacial Lineations and Grounding-Zone Wedges in Prydz Channel, East Antarctica |
title_full |
Mega-Scale Glacial Lineations and Grounding-Zone Wedges in Prydz Channel, East Antarctica |
title_fullStr |
Mega-Scale Glacial Lineations and Grounding-Zone Wedges in Prydz Channel, East Antarctica |
title_full_unstemmed |
Mega-Scale Glacial Lineations and Grounding-Zone Wedges in Prydz Channel, East Antarctica |
title_sort |
mega-scale glacial lineations and grounding-zone wedges in prydz channel, east antarctica |
publisher |
Digital Commons @ University of South Florida |
publishDate |
2016 |
url |
https://digitalcommons.usf.edu/msc_facpub/594 https://doi.org/10.1144/M46.110 |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(71.000,71.000,-69.750,-69.750) ENVELOPE(67.490,67.490,-73.065,-73.065) ENVELOPE(73.000,73.000,-67.000,-67.000) |
geographic |
Amery Amery Ice Shelf Antarctic East Antarctic Ice Sheet East Antarctica Lambert Glacier Prydz Bay Prydz Channel |
geographic_facet |
Amery Amery Ice Shelf Antarctic East Antarctic Ice Sheet East Antarctica Lambert Glacier Prydz Bay Prydz Channel |
genre |
Amery Ice Shelf Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelf Lambert Glacier Prydz Bay |
genre_facet |
Amery Ice Shelf Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelf Lambert Glacier Prydz Bay |
op_source |
Marine Science Faculty Publications |
op_relation |
https://digitalcommons.usf.edu/msc_facpub/594 doi:10.1144/M46.110 https://doi.org/10.1144/M46.110 |
op_doi |
https://doi.org/10.1144/M46.110 |
container_title |
Geological Society, London, Memoirs |
container_volume |
46 |
container_issue |
1 |
container_start_page |
185 |
op_container_end_page |
186 |
_version_ |
1772810373682954240 |