globalchange  > 气候变化与战略
DOI: 10.5194/cp-9-719-2013
Scopus记录号: 2-s2.0-84881130233
论文题名:
Potential and limits of OSL, TT-OSL, IRSL and pIRIR290 dating methods applied on a Middle Pleistocene sediment record of Lake El'gygytgyn, Russia
作者: Zander A.; Hilgers A.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2013
卷: 9, 期:2
起始页码: 719
结束页码: 733
语种: 英语
Scopus关键词: dating method ; luminescence dating ; mineral ; paleomagnetism ; Pleistocene ; proxy climate record ; sediment analysis ; Chukchi ; Elgygytgyn Lake ; Russian Federation
英文摘要: This study tests the paleomagnetic and proxy-data based Mid- to Upper Pleistocene sediment deposition history of Lake El'gygytgyn by applying different approaches of luminescence dating techniques on sediment cores taken from the centre of the 175m deep lake. For dating polymineral and quartz fine grains (4-11 μm grain size range) were extracted from nine different levels from the upper 28m of sediment cores 5011-1A and 5011-1B. According to the independent age model, the lowest sample from 27.8-27.9m below lake bottom level correlates to the Brunhes-Matuyama (B/M) reversal. Polymineral sub-samples were analysed by infra-red stimulated luminescence (IRSL) and post-IR IRSL measured at 290 C (pIRIR290) using single aliquot regenerative dose (SAR) sequences. SAR protocols were further applied to measure the blue light optically stimulated luminescence (OSL) and thermally-transferred OSL (TT-OSL) of fine-grained quartz supplemented by a multiple aliquot approach. Neither low temperature IRSL measurements at 50 C nor any OSL dating approach on quartz yielded reliable results. Deconvolution of their dose response curves revealed a pseudo-increase of the dose response curves and explains the observed underestimation. The pIRIR protocol applied to polymineral fine grains was the only luminescence technique able to provide dating results of acceptable accuracy up to ca. 700 ka when correlated to the existing proxydata and paleomagnetic based age record.We present the potential and limits of the different dating techniques and a correlation of pIRIR290 results with the proxy-data based age model. © Author(s) 2013.
资助项目: NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49423
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Recommended Citation:
Zander A.,Hilgers A.. Potential and limits of OSL, TT-OSL, IRSL and pIRIR290 dating methods applied on a Middle Pleistocene sediment record of Lake El'gygytgyn, Russia[J]. Climate of the Past,2013-01-01,9(2)
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