{"refrec":{"BRefID":209577,"RR":"<b>De Batist, M.; ENSO-CHILE Project Team</b> (2007). An 18,000-year multiproxy lacustrine record of climate variability in south-central Chile (40°S): Lago Puyehue, Chilean Lake District. <i>Geophys. Res. Abstr. 9(11395)</i>","BEntID":201557,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":". <i>Geophys. Res. Abstr. 9(11395)</i>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"De Batist, M.; ENSO-CHILE Project Team","OrigTitleTranslFlag":0,"Authorstringtrunc":"De Batist, M.; ENSO-CHILE Project Team","Englishabstract":"An 11-m-long sediment core was collected in Lago Puyehue (40ºS, Lake District, Chile). The coring site had been selected on basis of a seismic-stratigraphic analysis that highlighted it as an area of relatively condensed, continuous and undisturbed sedimentation in this otherwise highly dynamic post-glacial lake. The 11-m core extends back to 17,915 cal yr BP. An age-depth model was established by 9 AMS <sup>14</sup>C dates, constrained by <sup>210</sup>Pb, <sup>237</sup>Cs, <sup>241</sup>Am measurements, by the identification of event-deposits related to earthquakes and/or volcanic eruptions, and by varve-counting for the past 600 yr. The core was submitted to a multi-proxy analysis, including sedimentology, mineralogy, grain-size, major geochemistry and organic geochemistry (C/N ratio, d<sup>13</sup>C), loss-on-ignition, magnetic susceptibility, diatom analysis and palynology. Along-core variations in sediment composition reveal that the area of Lago Puyehue was characterised since the Last Glacial Maximum (LGM) by a series of rapid climate fluctuations superimposed on a long-term warming trend. These rapid climate changes are: (1) an abrupt warming at the end of the LGM at 17,300 cal yr BP, (2) a short, relatively cold interval between 13,100-12,300 cal yr BP, (3) a second abrupt warming, possibly with increased precipitation, at about 12,300 cal yr BP, and (4) an increase in climate variability in the late Holocene at 5000-6000 cal yr BP. The timing of these rapid climate changes confirms previously reported climate trends from continental southern South America and their out-of-phase relationship with those from the northern hemisphere and from Antarctica.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"An 18,000-year multiproxy lacustrine record of climate variability in south-central Chile (40°S): Lago Puyehue, Chilean Lake District","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:01.897972","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2007,"MonPub":null,"DateUpdate":"2011-11-16","DateCreate":"2011-11-16","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1},"refs":null,"anarec":{"AnaID":209577,"PubliDate":2007,"Pagination":null,"XtraPublOfAnaID":null,"ISBN":null,"Volume":"9","Issue":"11395","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":77248,"SerRR":"Geophysical Research Abstracts. 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