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Faculty of Science - Papers (Archive)

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Luminescence Dating Of Chinese Loess Beyond 130 Ka Using The Non-Fading Signal From K-Feldspar, Bo Li, Shenghua Li Jan 2012

Luminescence Dating Of Chinese Loess Beyond 130 Ka Using The Non-Fading Signal From K-Feldspar, Bo Li, Shenghua Li

Faculty of Science - Papers (Archive)

A multi-elevated-temperature post-IR IRSL (MET-pIRIR) protocol, which utilizes the IRSL signals measured by progressively increasing the stimulation temperature from 50 to 300 ℃ in a step of 50 ℃, was applied to date the potassium-rich feldspar (K-feldspar) extracts from loess samples at the Luochuan section of the Chinese Loess Plateau. It was observed that the MET-pIRIR ages obtained at elevatedtemperatures (250 and 300 ℃) are consistent with independent chronological control for the samples from the first loess layer (L1) to the third paleosol layer (S3), which correspond to the marine isotope stages (MIS) 2e9. Our results indicate that the MET-pIRIR …


A Reply To The Comments By Thomsen Et Al. On "Luminescence Dating Of K-Feldspar From Sediments: A Protocol Without Anomalous Fading Correction", Bo Li, Shenghua Li Jan 2012

A Reply To The Comments By Thomsen Et Al. On "Luminescence Dating Of K-Feldspar From Sediments: A Protocol Without Anomalous Fading Correction", Bo Li, Shenghua Li

Faculty of Science - Papers (Archive)

We are pleased that Thomsen et al. (2012) has tested our newly proposed multi-elevated-temperature post-IR IRSL (MET-pIRIR) procedure (Li and Li, 2011) using their own samples, which provides an independent test on the validity of this procedure. In their study, Thomsen et al. (2012) found that the METpIRIR procedure gave consistent results with the two-step post-IR IRSL (TS-pIRIR) procedure originally proposed by [Thomsen et al., 2008] and [Buylaert et al., 2009] and Thiel et al. (2010), indicating the validity of both methods for their samples investigated. Based on this observation, they argued that the MET-pIRIR procedure has no advantage over …