Mega-Scale Glacial Lineations and Grounding-Zone Wedges in Prydz Channel, East Antarctica

Michelle E. Guitard; Amelia E. Shevenell; Caroline Lavoie; Eugene W. Domack

doi:10.1144/M46.110

Mega-Scale Glacial Lineations and Grounding-Zone Wedges in Prydz Channel, East Antarctica

Michelle E. Guitard, Amelia E. Shevenell, Caroline Lavoie, Eugene W. Domack

College of Marine Science

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract

<p> <p id="x-x-x-x-p-2"> 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). </p></p>

Original language	American English
Title of host publication	Atlas of Submarine Glacial Landforms: Modern, Quaternary and Ancient
DOIs	https://doi.org/10.1144/M46.110
State	Published - Jan 1 2016

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Life Sciences

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title = "Mega-Scale Glacial Lineations and Grounding-Zone Wedges in Prydz Channel, East Antarctica",

abstract = " 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). ",

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language = "American English",

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T1 - Mega-Scale Glacial Lineations and Grounding-Zone Wedges in Prydz Channel, East Antarctica

AU - Guitard, Michelle E.

AU - Shevenell, Amelia E.

AU - Lavoie, Caroline

AU - Domack, Eugene W.

PY - 2016/1/1

Y1 - 2016/1/1

N2 - 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).

AB - 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).

UR - https://digitalcommons.usf.edu/msc_facpub/594

UR - https://doi.org/10.1144/M46.110

U2 - 10.1144/M46.110

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M3 - Chapter

BT - Atlas of Submarine Glacial Landforms: Modern, Quaternary and Ancient

ER -

Mega-Scale Glacial Lineations and Grounding-Zone Wedges in Prydz Channel, East Antarctica

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