Holocene depositional environments and surface-level changes at Lake Fryxell, Antarctica

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dc.contributor.authorWhittaker, T. E.
dc.contributor.authorHall, B. L.
dc.contributor.authorHendy, Chris H.
dc.contributor.authorSpaulding, S. A.
dc.date.accessioned2013-12-05T22:59:03Z
dc.date.available2013-12-05T22:59:03Z
dc.date.copyright2008-08-01
dc.date.issued2008
dc.description.abstractWe report on Holocene surface-level variations of Lake Fryxell, Antarctica, as determined from multi-proxy analyses of 18 sediment cores. During this time accumulating sediments were predominantly aeolian sand with algal and carbonate laminae. Based on stratigraphy, mineralogy and diatom assemblages we suggest some carbonate laminae were deposited when lake level dropped, leading to concentration and subsequent precipitation of salts. Although lake level appears to have remained relatively stable throughout the Holocene, minor (<4.5 m below present) lowstands occurred at approximately 6400, 4700, 3800 and ~ 1600 cal. yr BP. The stability of Lake Fryxell during the Holocene contrasts with large-scale variability at other Dry Valleys lakes (eg, Lake Vanda) and with suggestions from chemical diffusion models of a near-desiccation at ~1200 cal. yr BP. The reason for the comparative stability of Lake Fryxell is uncertain, but may be the result of basin morphology and the number, aspect and proximity of meltwater sources.en_NZ
dc.identifier.citationWhittaker, T. E., Hall, B. L., Hendy, C. H., & Spaulding, S. A. (2008). Holocene depositional environments and surface-level changes at Lake Fryxell, Antarctica. The Holocene, 18(5), 775-786.en_NZ
dc.identifier.doi10.1177/0959683608091797en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/8298
dc.language.isoenen_NZ
dc.publisherSageen_NZ
dc.relation.isPartOfThe Holoceneen_NZ
dc.relation.ispartofThe Holocene
dc.relation.urihttp://hol.sagepub.com/content/18/5/775.refsen_NZ
dc.subjectDry Valleysen_NZ
dc.subjectdepositional environmentsen_NZ
dc.subjectlake-level variationsen_NZ
dc.subjectsediment coresen_NZ
dc.subjectcarbonatesen_NZ
dc.subjectdiatomsen_NZ
dc.subjectLake Fryxellen_NZ
dc.subjectAntarcticaen_NZ
dc.titleHolocene depositional environments and surface-level changes at Lake Fryxell, Antarcticaen_NZ
dc.typeJournal Articleen_NZ
pubs.begin-page775en_NZ
pubs.elements-id33291
pubs.end-page786en_NZ
pubs.issue5en_NZ
pubs.volume18en_NZ
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