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DO RADIOCARBON AGES OF PLANT WAX BIOMARKERS AGREE WITH 14C-TOC/OSL-BASED AGE MODELS IN AN ARID HIGH-ALTITUDE LAKE SYSTEM?

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cris.lastimport.scopus2024-02-12T19:59:55Z
dc.abstract.enTo elucidate the dynamics of terrestrial leaf waxes in a high-altitude lake system, we performed compound-specific radiocarbon analysis (CSRA) of long-chain n-alkanes in two sediment core sections from Lake Karakul (Pamirs, Tajikistan) and in surface soil samples from the catchment area. We aimed to answer the question whether the n-alkanes are delivered into the lake sediment with substantial delay due to storage in soils, which may cause a potential bias when used as paleoenvironmental proxies. In the surface soils, the CSRA results reveal an age range of n-alkanes from modern to 2278 ± 155 cal BP. In the two sediment core samples, three of the four n-alkane ages fell on the lower ends of the 1σ-uncertainty ranges of modeled ages of the sediments (based on AMS 14C-TOC and OSL dating results). We conclude that sedimentary leaf waxes represent compounds with intermediate turnover time in soils, for example originating from alluvial plains close to the shores. Overall, the results provide evidence that sedimentary leaf wax compounds in this cold and arid setting are potentially older than the conventional age model indicates, but these findings need to be interpreted in context of the generally large uncertainty ranges of such age models.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorMętrak, Monika
dc.contributor.authorMischke, Steffen
dc.contributor.authorRajabov, Ilhomjon
dc.contributor.authorSachse, Dirk
dc.contributor.authorAichner, Bernhard
dc.contributor.authorGierga, Merle
dc.contributor.authorRajabov, Nasimjon
dc.contributor.authorStolz, Alexander
dc.contributor.authorRethemeyer, Janet
dc.contributor.authorSuska-Malawska, Małgorzata
dc.contributor.authorWilk, Mateusz
dc.date.accessioned2024-01-24T22:13:34Z
dc.date.available2024-01-24T22:13:34Z
dc.date.issued2021
dc.description.financePublikacja bezkosztowa
dc.identifier.doi10.1017/RDC.2021.78
dc.identifier.issn0033-8222
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/105320
dc.identifier.weblinkhttps://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822221000783
dc.languageeng
dc.pbn.affiliationearth and related environmental sciences
dc.relation.ispartofRadiocarbon
dc.relation.pages1-16
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.enchronology
dc.subject.encompound-specific radiocarbon analysis
dc.subject.enleaf waxes
dc.subject.enn-alkanes
dc.subject.enPamirs
dc.subject.enCentral Asia
dc.titleDO RADIOCARBON AGES OF PLANT WAX BIOMARKERS AGREE WITH 14C-TOC/OSL-BASED AGE MODELS IN AN ARID HIGH-ALTITUDE LAKE SYSTEM?
dc.typeJournalArticle
dspace.entity.typePublication