Title

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

Document Type

Book Chapter

Publication Date

2016

Digital Object Identifier (DOI)

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

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).

Was this content written or created while at USF?

Yes

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

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