Geomorphology and glacial history of Rauer Group, East Antarctica

Duanne White; Ole Bennike; Sonja Berg; Simon Harley; David Fink; Kevin Kiernan; Anne McConnell; Bernd Wagner

doi:10.1016/j.yqres.2009.04.001

Geomorphology and glacial history of Rauer Group, East Antarctica

Duanne White, Ole Bennike, Sonja Berg, Simon Harley, David Fink, Kevin Kiernan, Anne McConnell, Bernd Wagner

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Abstract

The presence of glacial sediments across the Rauer Group indicates that the East Antarctic ice sheet formerly covered the entire archipelago and has since retreated at least 15 km from its maximum extent. The degree of weathering of these glacial sediments suggests that ice retreat from this maximum position occurred sometime during the latter half of the last glacial cycle. Following this phase of retreat, the ice sheet margin has not expanded more than ~1 km seaward of its present position. This pattern of ice sheet change matches that recorded in Vestfold Hills, providing further evidence that the diminutive Marine Isotope Stage 2 ice sheet advance in the nearby Larsemann Hills may have been influenced by local factors rather than a regional ice-sheet response to climate and sea-level change.

Original language	English
Pages (from-to)	80-90
Number of pages	11
Journal	Quaternary Research
Volume	72
DOIs	https://doi.org/10.1016/j.yqres.2009.04.001
Publication status	Published - 2009

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title = "Geomorphology and glacial history of Rauer Group, East Antarctica",

abstract = "The presence of glacial sediments across the Rauer Group indicates that the East Antarctic ice sheet formerly covered the entire archipelago and has since retreated at least 15 km from its maximum extent. The degree of weathering of these glacial sediments suggests that ice retreat from this maximum position occurred sometime during the latter half of the last glacial cycle. Following this phase of retreat, the ice sheet margin has not expanded more than ~1 km seaward of its present position. This pattern of ice sheet change matches that recorded in Vestfold Hills, providing further evidence that the diminutive Marine Isotope Stage 2 ice sheet advance in the nearby Larsemann Hills may have been influenced by local factors rather than a regional ice-sheet response to climate and sea-level change.",

keywords = "Cosmogenic, Weathering, 10Be, Ice sheet, Schmidt hammer, Raised beach, Relative sea level.",

author = "Duanne White and Ole Bennike and Sonja Berg and Simon Harley and David Fink and Kevin Kiernan and Anne McConnell and Bernd Wagner",

year = "2009",

doi = "10.1016/j.yqres.2009.04.001",

language = "English",

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journal = "Quaternary Research",

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T1 - Geomorphology and glacial history of Rauer Group, East Antarctica

AU - White, Duanne

AU - Bennike, Ole

AU - Berg, Sonja

AU - Harley, Simon

AU - Fink, David

AU - Kiernan, Kevin

AU - McConnell, Anne

AU - Wagner, Bernd

PY - 2009

Y1 - 2009

N2 - The presence of glacial sediments across the Rauer Group indicates that the East Antarctic ice sheet formerly covered the entire archipelago and has since retreated at least 15 km from its maximum extent. The degree of weathering of these glacial sediments suggests that ice retreat from this maximum position occurred sometime during the latter half of the last glacial cycle. Following this phase of retreat, the ice sheet margin has not expanded more than ~1 km seaward of its present position. This pattern of ice sheet change matches that recorded in Vestfold Hills, providing further evidence that the diminutive Marine Isotope Stage 2 ice sheet advance in the nearby Larsemann Hills may have been influenced by local factors rather than a regional ice-sheet response to climate and sea-level change.

AB - The presence of glacial sediments across the Rauer Group indicates that the East Antarctic ice sheet formerly covered the entire archipelago and has since retreated at least 15 km from its maximum extent. The degree of weathering of these glacial sediments suggests that ice retreat from this maximum position occurred sometime during the latter half of the last glacial cycle. Following this phase of retreat, the ice sheet margin has not expanded more than ~1 km seaward of its present position. This pattern of ice sheet change matches that recorded in Vestfold Hills, providing further evidence that the diminutive Marine Isotope Stage 2 ice sheet advance in the nearby Larsemann Hills may have been influenced by local factors rather than a regional ice-sheet response to climate and sea-level change.

KW - Cosmogenic

KW - Weathering

KW - 10Be

KW - Ice sheet

KW - Schmidt hammer

KW - Raised beach

KW - Relative sea level.

U2 - 10.1016/j.yqres.2009.04.001

DO - 10.1016/j.yqres.2009.04.001

M3 - Article

SN - 0033-5894

VL - 72

SP - 80

EP - 90

JO - Quaternary Research

JF - Quaternary Research

ER -

Geomorphology and glacial history of Rauer Group, East Antarctica

Abstract

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