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

Journal Article


Abstract


  • Numerical 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.

UOW Authors


  •   Chen, Yiwei (external author)
  •   Li, Sheng-Hua (external author)
  •   Li, Bo
  •   Hao, Qinzhen (external author)
  •   Sun, Jimin (external author)

Publication Date


  • 2015

Citation


  • Chen, Y., Li, S., Li, B., Hao, Q. & Sun, J. (2015). Maximum age limitation in luminescence dating of Chinese loess using the multiple-aliquot MET-pIRIR signals from K-feldspar. Quaternary Geochronology, 30 (Part B), 207-212.

Scopus Eid


  • 2-s2.0-84947026048

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/3439

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 207

End Page


  • 212

Volume


  • 30

Issue


  • Part B

Place Of Publication


  • Netherlands

Abstract


  • Numerical 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.

UOW Authors


  •   Chen, Yiwei (external author)
  •   Li, Sheng-Hua (external author)
  •   Li, Bo
  •   Hao, Qinzhen (external author)
  •   Sun, Jimin (external author)

Publication Date


  • 2015

Citation


  • Chen, Y., Li, S., Li, B., Hao, Q. & Sun, J. (2015). Maximum age limitation in luminescence dating of Chinese loess using the multiple-aliquot MET-pIRIR signals from K-feldspar. Quaternary Geochronology, 30 (Part B), 207-212.

Scopus Eid


  • 2-s2.0-84947026048

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/3439

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 207

End Page


  • 212

Volume


  • 30

Issue


  • Part B

Place Of Publication


  • Netherlands