Mega-Scale Glacial Lineations and Grounding-Zone Wedges in Prydz Channel, East Antarctica
Digital Object Identifier (DOI)
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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Citation / Publisher Attribution
Mega-Scale Glacial Lineations and Grounding-Zone Wedges in Prydz Channel, East Antarctica, in J. A. Dowdeswell, M. Canals, M. Jakobsson, B. J. Todd, E. K. Dowdeswell & K. A. Hogan (Eds.), Atlas of Submarine Glacial Landforms: Modern, Quaternary and Ancient, Geological Society of London Publications, v. 46, p. 185-186
Scholar Commons Citation
Guitard, Michelle E.; Shevenell, Amelia E.; Lavoie, Caroline; and Domack, Eugene W., "Mega-Scale Glacial Lineations and Grounding-Zone Wedges in Prydz Channel, East Antarctica" (2016). Marine Science Faculty Publications. 594.