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The Southern Margin of the Late Cainozoic Ice Cap on the Central Plateau of Tasmania
journal contributionposted on 2023-05-16, 16:17 authored by Kiernan, K
The easternmost extremity of the ice cap that developed in the Tasmanian Central Highlands during the time of most extensive Late Cainozoic glaciation lay on the dolerite-capped Central Plateau east and north-east of Lake St Clair. During the Last Glacial Maximum (LGM), the more restricted ice cover included a small discrete ice cap (probably less than 250-300 m thick) that formed on the Central Plateau. The LGM ice limits on the southern part of the Central Plateau, including all five southern outlet valleys, are reported here. Earlier ice limits have been identified in two of these valleys, but on the plateau proper earlier glacial deposits have been generally extensively reworked beyond the LGM limit, such that confirmation of a glacial origin for diamictons on slopes is difficult. South of the plateau, the oldest deposits flooring lower reaches of two outlet valleys indicate that ice flowed southwards directly from the plateau, but later deposits indicate diffluent flow from the Derwent Glacier.
Publication titleAustralian Geographer
Department/SchoolSchool of Geography, Planning and Spatial Sciences
PublisherCarfax Publishing, Taylor & Francis Ltd
Place of publicationUnited Kingdom