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Article: Maximum age limitation in luminescence dating of Chinese loess using the multiple-aliquot MET-pIRIR signals from K-feldspar

TitleMaximum age limitation in luminescence dating of Chinese loess using the multiple-aliquot MET-pIRIR signals from K-feldspar
Authors
Issue Date2015
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/wps/find/journaldescription.cws_home/706731/description?navopenmenu=1
Citation
Quaternary Geochronology, 2015, v. 30 n. pt. B, p. 207-212 How to Cite?
AbstractNumerical dating of loess is important for Quaternary studies. Recent progress in post-infrared infrared-stimulated luminescence (pIRIR) signals from potassium-rich feldspar has allowed successful dating of Chinese loess beyond the conventional dating limit based on quartz optically stimulated luminescence (OSL) signals. In this study we tested the multiple-aliquot regenerative-dose (MAR) pre-dose multiple-elevated-temperature post-IR IRSL (pMET-pIRIR) procedure on samples from the palaeosol S5 (∼480 ka) and S8 (∼780 ka) layers from the Luochuan and Jingbian sections, respectively. The results show that (1) compared to sensitivity-corrected signal (Lx/Tx), a higher saturation dose is observed for the sensitivity-uncorrected MET-pIRIR signals (Lx), suggesting that MAR is advantageous for dating old samples; (2) negligible fading component can be achieved using the pMET-pIRIR procedure; (3) for the sample from the top of palaeosol S5, De values (1360 + 226/-167 Gy) broadly consistent with expected De (1550 ± 72 Gy) can be obtained using the sensitivity-uncorrected 300 °C MET-pIRIR signal. Our study suggests that a De value of about 1800 Gy may be the maximum dating limit of Chinese loess using the MAR pMET-pIRIR procedure.
Persistent Identifierhttp://hdl.handle.net/10722/216823
ISSN
2015 Impact Factor: 3.142
2015 SCImago Journal Rankings: 1.931

 

DC FieldValueLanguage
dc.contributor.authorChen, Y-
dc.contributor.authorLi, SH-
dc.contributor.authorLi, B-
dc.contributor.authorHao, QZ-
dc.contributor.authorSun, JM-
dc.date.accessioned2015-09-18T05:40:28Z-
dc.date.available2015-09-18T05:40:28Z-
dc.date.issued2015-
dc.identifier.citationQuaternary Geochronology, 2015, v. 30 n. pt. B, p. 207-212-
dc.identifier.issn1871-1014-
dc.identifier.urihttp://hdl.handle.net/10722/216823-
dc.description.abstractNumerical dating of loess is important for Quaternary studies. Recent progress in post-infrared infrared-stimulated luminescence (pIRIR) signals from potassium-rich feldspar has allowed successful dating of Chinese loess beyond the conventional dating limit based on quartz optically stimulated luminescence (OSL) signals. In this study we tested the multiple-aliquot regenerative-dose (MAR) pre-dose multiple-elevated-temperature post-IR IRSL (pMET-pIRIR) procedure on samples from the palaeosol S5 (∼480 ka) and S8 (∼780 ka) layers from the Luochuan and Jingbian sections, respectively. The results show that (1) compared to sensitivity-corrected signal (Lx/Tx), a higher saturation dose is observed for the sensitivity-uncorrected MET-pIRIR signals (Lx), suggesting that MAR is advantageous for dating old samples; (2) negligible fading component can be achieved using the pMET-pIRIR procedure; (3) for the sample from the top of palaeosol S5, De values (1360 + 226/-167 Gy) broadly consistent with expected De (1550 ± 72 Gy) can be obtained using the sensitivity-uncorrected 300 °C MET-pIRIR signal. Our study suggests that a De value of about 1800 Gy may be the maximum dating limit of Chinese loess using the MAR pMET-pIRIR procedure.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/wps/find/journaldescription.cws_home/706731/description?navopenmenu=1-
dc.relation.ispartofQuaternary Geochronology-
dc.rights© 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleMaximum age limitation in luminescence dating of Chinese loess using the multiple-aliquot MET-pIRIR signals from K-feldspar-
dc.typeArticle-
dc.identifier.emailLi, SH: shli@hku.hk-
dc.identifier.authorityLi, SH=rp00740-
dc.description.naturepostprint-
dc.identifier.doi10.1016/j.quageo.2015.01.002-
dc.identifier.hkuros250473-
dc.identifier.volume30-
dc.identifier.issuept. B-
dc.identifier.spage207-
dc.identifier.epage212-
dc.publisher.placeNetherlands-

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