Topographic and microclimatic impacts on glaciation of the Denison Range, southwest Tasmania

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dc.contributor.authorKiernan, Ken_AU
dc.contributor.authorMcMinn, MSen_AU
dc.contributor.authorFink, Den_AU
dc.date.accessioned2021-12-16T02:43:02Zen_AU
dc.date.available2021-12-16T02:43:02Zen_AU
dc.date.issued2014-08en_AU
dc.date.statistics2021-11-11en_AU
dc.description.abstractMorphostratigraphic relationships between landforms and sediments, comparative boulder weathering status, and paired 10Be and 26Al exposure ages indicate the occurrence of at least three separate glaciations that are interpreted as dating from MIS 2, 6 and possibly 8. The Rhona Glacier remained at or close to its greatest LGM extent until ∼17.6 ka due to a very favourable micro-climate that resulted from local topography. That these factors were sufficient to over-power relatively subtle zonal temperature shifts that caused significant changes in more exposed Tasmanian glaciers implies a need for caution in correlating between glacier systems in markedly different topographic settings when environmental conditions are only marginally supportive of glaciation. No evidence was detected for any greater ice extent during MIS 3 or MIS 4 than during MIS 2, but much more extensive glaciations occurred during earlier glacial climatic cycles. Reduced local precipitation in parallel with increasing aridity of the Australian continent may account for the progressively diminishing maximum extent of glaciers during the latter part of the Pleistocene, and it would have emphasized the importance of local topography and microclimate for the glaciers of southwest Tasmania. © 2014 Published by Elsevier Ltd.en_AU
dc.identifier.citationKiernan, K., McMinn, M. S., & Fink, D. (2014). Topographic and microclimatic impacts on glaciation of the Denison Range, southwest Tasmania. Quaternary Science Reviews, 97, 136-147. doi:10.1016/j.quascirev.2014.05.008en_AU
dc.identifier.issn0277-3791en_AU
dc.identifier.journaltitleQuaternary Science Reviewsen_AU
dc.identifier.pagination136-147en_AU
dc.identifier.urihttps://doi.org/10.1016/j.quascirev.2014.05.008en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12483en_AU
dc.identifier.volume97en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectLandformsen_AU
dc.subjectSedimentsen_AU
dc.subjectGlaciersen_AU
dc.subjectMorainesen_AU
dc.subjectAge estimationen_AU
dc.subjectTopographyen_AU
dc.subjectStratigraphyen_AU
dc.subjectWeatheringen_AU
dc.subjectMicroclimatesen_AU
dc.subjectPleistocene epochen_AU
dc.subjectTasmaniaen_AU
dc.titleTopographic and microclimatic impacts on glaciation of the Denison Range, southwest Tasmaniaen_AU
dc.typeJournal Articleen_AU
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