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dc.contributor.authorKemp, Justine
dc.contributor.authorRadke, Lynda C
dc.contributor.authorOlley, Jon
dc.contributor.authorJuggins, Steve
dc.contributor.authorDe Deckker, Patrick
dc.date.accessioned2017-05-03T15:05:12Z
dc.date.available2017-05-03T15:05:12Z
dc.date.issued2012
dc.date.modified2012-09-20T22:29:20Z
dc.identifier.issn0033-5894
dc.identifier.doi10.1016/j.yqres.2011.09.013
dc.identifier.urihttp://hdl.handle.net/10072/46921
dc.description.abstractPalaeosalinity records for groundwater-influenced lakes in the southwest Murray Basin were constructed from an ostracod-based, weighted-averaging transfer function, supplemented with evidence from Campylodiscus clypeus (diatom), charophyte oogonia, Coxiella striata (gastropod), Elphidium sp. (foraminifera), Daphniopsis sp. ephippia (Cladocera), and brine shrimp (Parartemia zietziana) faecal pellets, the d18O of ostracods, and > 130 孠quartz sand counts. The chronology is based on optically stimulated luminescence and calibrated radiocarbon ages. Relatively wet conditions are marked by lower salinities between 9600 yr and 5700 yr ago, but mutually exclusive high- and low-salinity ostracod communities suggest substantial variability in effective precipitation in the early Holocene. A drier climate was firmly in place by 4500 yr and is marked at the groundwater-dominated NW Jacka Lake by an increase in aeolian quartz and, at Jacka Lake, by a switch from surface-water to groundwater dominance. Short-lived, low-salinity events at 8800, 7200, 5900, 4800, 2400, 1300 and 400 yr are similar in timing and number to those recorded on Australia's southern continental shelf, and globally, and provide evidence for the existence of the ~ 1500-yr cycle in mainland southern Australia. We surmise that these are cool events associated with periodic equatorward shifts in the westerly wind circulation.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.publisher.placeUnited States
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom65
dc.relation.ispartofpageto76
dc.relation.ispartofissue1
dc.relation.ispartofjournalQuaternary Research
dc.relation.ispartofvolume77
dc.rights.retentionY
dc.subject.fieldofresearchGeology
dc.subject.fieldofresearchPhysical geography and environmental geoscience
dc.subject.fieldofresearchEnvironmental management not elsewhere classified
dc.subject.fieldofresearchArchaeology
dc.subject.fieldofresearchcode3705
dc.subject.fieldofresearchcode3709
dc.subject.fieldofresearchcode410499
dc.subject.fieldofresearchcode4301
dc.titleHolocene lake salinity changes in the Wimmera, southeastern Australia, provide evidence for millennial-scale climate variability
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2012
gro.hasfulltextNo Full Text
gro.griffith.authorOlley, Jon M.
gro.griffith.authorKemp, Justine


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