globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2014.06.009
Scopus记录号: 2-s2.0-85027921988
论文题名:
AMS 14C and OSL/IRSL dating of the Dunaszekcső loess sequence (Hungary): Chronology for 20 to 150ka and implications for establishing reliable age-depth models for the last 40ka
作者: Újvári G.; Molnár M.; Novothny T.; Páll-Gergely B.; Kovács J.; Várhegyi A.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 106
起始页码: 140
结束页码: 154
语种: 英语
英文关键词: Hungary ; Loess ; Mollusc ; OSL and IRSL dating ; Paleosol ; Radiocarbon dating
Scopus关键词: Charcoal ; Sediments ; Hungary ; Loess ; OSL and IRSL dating ; Paleosol ; Radiocarbon dating ; Molluscs ; charcoal ; chronology ; gastropod ; loess ; paleoenvironment ; paleosol ; radiocarbon dating ; shell ; Atlantic Ocean ; Atlantic Ocean (North) ; Hungary ; Chondrula tridens ; Clausiliidae ; Gastropoda ; Mollusca ; Vitrea crystallina
英文摘要: As revealed by 18 AMS radiocarbon and 24 OSL/IRSL ages the Dunaszekcső loess-paleosol sequence is an excellent terrestrial record of paleoenvironmental change in the Carpathian Basin for the last 130ka, with significant soil forming episodes during the Eemian interglacial (130-115ka, MIS 5e) and in some subsequent MIS 5 stages, and distinct periods of loess accumulations during the MIS 4 and MIS 2. Charcoals from the sequence made it possible to test the accuracy of 14C ages from mollusc shells. This approach revealed that 14C ages from some gastropods having small shells (<10mm) (Succinella oblonga, Vitrea crystallina) are statistically indistinguishable from the ages of charcoals, while others (Clausiliidae sp., Chondrula tridens) show age anomalies up to 600-800 years. OSL and pIRIR@290 ages are found to be consistently older, while post-IR OSL ages are younger than the 14C ages from charcoals and molluscs by some thousands of years, except for pIRIR@225 ages that match the radiocarbon ages quite well. OSL and IRSL ages have scatters up to 7-10 thousand years within 40ka, while charcoals and small molluscs yield consistent ages with relatively low variability. Beyond the observation that some small molluscs seem to yield reliable 14C ages, calibrated 2σ age ranges of the radiocarbon data (ca500-800 years for 20 to 30ka) are an order of magnitude narrower than those of the OSL/IRSL methods (1800-4000 years for 25 to 35ka). Thus, for establishing chronologies within 40ka, which are both accurate and precise enough to address issues like synchroneity of millennial-scale paleoenvironmental events across regions (e.g. North Atlantic and Europe), AMS radiocarbon dating of shells of specific loess molluscs and charcoals may probably be a powerful chronological tool. However, additional work is definitely required involving 14C and OSL/IRSL dates from other loess sequences to further test the performance of these two supposedly robust chronometers. © 2014 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60091
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作者单位: Geodetic and Geophysical Institute, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, Csatkai E. u. 6-8., Sopron, Hungary; Hertelendi Laboratory of Environmental Studies, Institute for Nuclear Research, Hungarian Academy of Sciences, Bem tér 18/C, Debrecen, Hungary; Department of Physical Geography, Eötvös Loránd University, Pazmany Peter setany 1/c, Budapest, Hungary; Department of Biology, Shinshu University, Matsumoto, Japan; Department of Geology and Meteorology, University of Pécs, Ifjúság u. 6., Pécs, Hungary; Environmental Analytical and Geoanalytical Research Group, Szentágothai Research Centre, University of Pécs, Ifjúság útja 20., Pécs, Hungary; Department of Environmental Engineering, Polláck Mihály Faculty of Engineering and Information Technology, University of Pécs, Rozmaring u. 17., Pécs, Hungary

Recommended Citation:
Újvári G.,Molnár M.,Novothny T.,et al. AMS 14C and OSL/IRSL dating of the Dunaszekcső loess sequence (Hungary): Chronology for 20 to 150ka and implications for establishing reliable age-depth models for the last 40ka[J]. Quaternary Science Reviews,2014-01-01,106
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