Comparison of radiocarbon ages from different organic fractions in tropical peat cores: insights from Kalimantan, Indonesia

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dc.contributor.authorWust, RAJen_AU
dc.contributor.authorJacobsen, GEen_AU
dc.contributor.authorvan der Gaast, Hen_AU
dc.contributor.authorSmith, AMen_AU
dc.date.accessioned2009-11-09en_AU
dc.date.accessioned2010-04-30T05:04:30Zen_AU
dc.date.available2009-11-09en_AU
dc.date.available2010-04-30T05:04:30Zen_AU
dc.date.issued2008-12en_AU
dc.date.statistics2008-12en_AU
dc.description.abstractVarious organic fractions of an Indonesian tropical peat deposit were dated using radiocarbon accelerator mass spectrometry (AMS). Four different depth layers, deposited during the last 28,000 14C yr, were analyzed and the data compared to bulk sample analyses. The pollen extracts consistently produced the oldest dates. The bulk samples (<250 μm and <100 μm) often yielded the youngest dates. The age difference between the individual fractions depended on the layer depth and hence the true age of the sampled peats. The age discrepancy was highest (~16,000 14C yr) in the oldest peat material. We interpret this to be a consequence of the input of organic matter over a long period of time, with peat oxidation and/or no peat accumulation during the last glacial maximum (LGM). The age discrepancies were smaller (between 10 and 900 14C yr) for the Holocene peat samples. It was concluded that the pollen extract fraction might be the most reliable fraction for dating tropical peat deposits that are covered by deeply rooting vegetation. © 2008, University of Arizonaen_AU
dc.identifier.citationWust, R. A. J., Jacobsen, G. E., van der Gaast, H., & Smith, A. M. (2008). Comparison of radiocarbon ages from different organic fractions in tropical peat cores: insights from Kalimantan, Indonesia. Radiocarbon, 50(3), 359-372. doi:10.1017/S0033822200053492en_AU
dc.identifier.govdoc1293en_AU
dc.identifier.issn0033-8222en_AU
dc.identifier.issue3en_AU
dc.identifier.journaltitleRadiocarbonen_AU
dc.identifier.pagination359-372en_AU
dc.identifier.urihttps://doi.org/10.1017/S0033822200053492en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/2234en_AU
dc.identifier.volume50en_AU
dc.language.isoenen_AU
dc.publisherUniversity of Arizonaen_AU
dc.subjectIsotope datingen_AU
dc.subjectIndonesiaen_AU
dc.subjectPeaten_AU
dc.subjectMass spectroscopyen_AU
dc.subjectOrganic matteren_AU
dc.subjectPollenen_AU
dc.titleComparison of radiocarbon ages from different organic fractions in tropical peat cores: insights from Kalimantan, Indonesiaen_AU
dc.typeJournal Articleen_AU
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