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Full-Text Articles in Social and Behavioral Sciences
Luminescence Dating Of Chinese Loess Beyond 130 Ka Using The Non-Fading Signal From K-Feldspar, Bo Li, Shenghua Li
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
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 …
Police Witness Identification Images: A Geometric Morphometric Analysis, Susan Hayes, Cameron Tullberg
Police Witness Identification Images: A Geometric Morphometric Analysis, Susan Hayes, Cameron Tullberg
Faculty of Science - Papers (Archive)
Research into witness identification images typically occurs within the laboratory and involves subjective likeness and recognizability judgments. This study analyzed whether actual witness identification images systematically alter the facial shapes of the suspects described. The shape analysis tool, geometric morphometrics, was applied to 46 homologous facial landmarks displayed on 50 witness identification images and their corresponding arrest photographs, using principal component analysis and multivariate regressions. The results indicate that compared with arrest photographs, witness identification images systematically depict suspects with lowered and medially located eyebrows (p=
Beeswax As Dental Filling On A Neolithic Human Tooth, Federico Bernardini, Claudio Tuniz, Alfredo Coppa, Lucia Mancini, Diego Dreossi, Diane Eichert, Gianluca Turco, Matteo Biasotto, Filippo Terrasi, Nicola De Cesare, Quan Hua, Vladimir Levchenko
Beeswax As Dental Filling On A Neolithic Human Tooth, Federico Bernardini, Claudio Tuniz, Alfredo Coppa, Lucia Mancini, Diego Dreossi, Diane Eichert, Gianluca Turco, Matteo Biasotto, Filippo Terrasi, Nicola De Cesare, Quan Hua, Vladimir Levchenko
Faculty of Science - Papers (Archive)
Evidence of prehistoric dentistry has been limited to a few cases, the most ancient dating back to the Neolithic. Here we report a 6500-year-old human mandible from Slovenia whose left canine crown bears the traces of a filling with beeswax. The use of different analytical techniques, including synchrotron radiation computed micro-tomography (micro-CT), Accelerator Mass Spectrometry (AMS) radiocarbon dating, Infrared (IR) Spectroscopy and Scanning Electron Microscopy (SEM), has shown that the exposed area of dentine resulting from occlusal wear and the upper part of a vertical crack affecting enamel and dentin tissues were filled with beeswax shortly before or after the …
Slip Rate Of The Aksay Segment Of Altyn Tagh Fault Revealed By Osl Dating Of River Terraces, Yiwei Chen, Sheng-Hua Li, Bo Li
Slip Rate Of The Aksay Segment Of Altyn Tagh Fault Revealed By Osl Dating Of River Terraces, Yiwei Chen, Sheng-Hua Li, Bo Li
Faculty of Science - Papers (Archive)
The slip rate of Altyn Tagh Fault (ATF) was studied near the Aksay segment (39°24.572´N, 94°16.012´E), China, based on dating the terraces of a river passing through the ATF. Two river terrace risers were offset by the ATF and the fault displacements were recorded. Average slip rate of the Aksay segment of the ATF was estimated using the offset of terrace risers divided by the corresponding ages. The ages of the terraces were determined by optical dating of the loess deposited on the river terrace. Our results demonstrated that: (1) The optically stimulated luminescence (OSL) ages of loess can be …
Testing A Multi-Step Post-Ir Irsl Dating Method Using Polymineral Fine Grains From Chinese Loess, Xiao Fu, Bo Li, Sheng-Hua Li
Testing A Multi-Step Post-Ir Irsl Dating Method Using Polymineral Fine Grains From Chinese Loess, Xiao Fu, Bo Li, Sheng-Hua Li
Faculty of Science - Papers (Archive)
The potential of multi-elevated-temperature post-IR IRSL (MET-pIRIR) dating [Li, B., Li, S.H., 2011. Luminescence dating of K-feldspar from sediments: a protocol without anomalous fading correction. Quaternary Geochronology 6, 468-479] using polymineral fine grains (FG) (4-11 μm) is tested using loess samples from the Luochuan section in the Chinese Loess Plateau. Nine FG samples with ages within the last glacial-interglacial period are tested using the MET-pIRIR protocol. The MET-pIRIR results for FG are compared with both the coarse grain (63-90 μm) K-feldspar MET-pIRIR dating results and the coarse grain quartz OSL dating results. The stratigraphic age of the profile also provides …