Re-assessment of the mid to late Quaternary glacial and environmental history of the Boco Plain, western Tasmania

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dc.contributor.authorAugustinus, PCen_AU
dc.contributor.authorFink, Den_AU
dc.contributor.authorFletcher, MSen_AU
dc.contributor.authorThomas, Ien_AU
dc.date.accessioned2021-12-20T23:48:53Zen_AU
dc.date.available2021-12-20T23:48:53Zen_AU
dc.date.issued2017-03-15en_AU
dc.date.statistics2021-11-14en_AU
dc.description.abstractThe glacial geomorphology and drill core-based stratigraphy of the Boco Plain, western Tasmania, reveal a complex sequence of Quaternary glacial and non-glacial episodes. The upper part of the southern Boco Plain stratigraphy was previously dated by 14C and U-series on interbedded organics of MIS 1 to MIS 5 affinity. U-series dating of ferricretes associated with glacial diamictons from Boco Plain cores suggested that there were glacial advances broadly correlative with MIS 6, 8 and ≥10. However, terrestrial cosmogenic nuclide (10Be and 26Al) exposure ages for the moraine sequence preserved on the wider Boco Plain area indicate that moraines previously attributed to MIS 6 and 8 advances were deposited during MIS 10 or earlier cold stages. There is no evidence for MIS 2, 4 or 6 affinity glacial advances onto the Boco Plain with ice of this age restricted to the West Coast Range. New palynological records from the Boco Plain core 6690 confirmed the late Quaternary ages of the upper part of the sequence, whilst extinct palynomorphs indicate a pre-Quaternary age for the glacial diamictons at the base of core Boco 4 and 10. Consequently, the mid-Pleistocene glacial sequence preserved in the Boco Plain is significantly older than previously envisaged, with the post MIS 10 to 12 geomorphology of the plain dominated by fluvial deltaic, swamp peat and lacustrine environments. © 2017 Elsevier Ltd.en_AU
dc.identifier.citationAugustinus, P., Fink, D., Fletcher, M.-S., & Thomas, I. (2017). Re-assessment of the mid to late Quaternary glacial and environmental history of the Boco Plain, western Tasmania. Quaternary Science Reviews, 160, 31-44. doi:10.1016/j.quascirev.2017.01.015en_AU
dc.identifier.issn0277-3791en_AU
dc.identifier.journaltitleQuaternary Science Reviewsen_AU
dc.identifier.pagination31-44en_AU
dc.identifier.urihttps://doi.org/10.1016/j.quascirev.2017.01.015en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12598en_AU
dc.identifier.volume160en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectGlaciersen_AU
dc.subjectGeomorphologyen_AU
dc.subjectTasmaniaen_AU
dc.subjectAustraliaen_AU
dc.subjectStratigraphyen_AU
dc.subjectCarbon 14en_AU
dc.subjectMorainesen_AU
dc.subjectIceen_AU
dc.subjectQuaternary perioden_AU
dc.subjectPleistocene epochen_AU
dc.titleRe-assessment of the mid to late Quaternary glacial and environmental history of the Boco Plain, western Tasmaniaen_AU
dc.typeJournal Articleen_AU
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