RECONSTRUCTION OF MAXIMUM GLACIAL EXTENT IN THE CENTRAL SØR RONDANE MOUNTAINS, EAST ANTARCTICA

Glacial landforms and deposits indicating the past expansion of glaciers are described. It is conspicuous that thick erratics form an end-moraine ridge or an extensive depositional surface on the summit, and that roches moutonnees are developed on the sharp ridge. On the basis of these traces, a pal...

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Bibliographic Details
Main Authors: ヒラカワ カズオミ, マツオカ ノリカズ, モリワキ キイチ, Kazuomi HIRAKAWA, Norikazu MATSUOKA, Kiichi MORIWAKI
Format: Report
Language:English
Published: Department of Geography, Faculty of Education, Yamanashi University 1988
Subjects:
East Antarctica
Sør-Rondane
Sør Rondane Mountains
Moraine Ridge
Antarc*
Antarctica
Ice Sheet
Online Access:https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2569
http://id.nii.ac.jp/1291/00002569/
https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2569&item_no=1&attribute_id=18&file_no=1
Description
Summary:Glacial landforms and deposits indicating the past expansion of glaciers are described. It is conspicuous that thick erratics form an end-moraine ridge or an extensive depositional surface on the summit, and that roches moutonnees are developed on the sharp ridge. On the basis of these traces, a paleogeographical reconstruction during the time of the maximum glaciation is presented : (1) The southern half of the central Sør Rondane Mountains was mostly covered with the ice sheet from the ice plateau; (2) Ice fall was located 10km further north than at present; (3) Ice was about 300-350m thicker than at present; (4) The northern half of the central Sør Rondane Mountains rose relatively widely above the ice sheet and outlet glacier.

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