Results 171 to 180 of about 229,920 (215)

Fire history in arid and semi-arid regions of northwest China during the last glacial period inferred from a charcoal record in Hetao Basin. [PDF]

PLoS One
Liu S, Li X, Zhang S, Cai M, He X, Li S, Ma P.   +6 more
europepmc   +1 more source

Pleistocene chronology and history of hominins and fauna at Denisova Cave. [PDF]

Nat Commun
Jacobs Z, Zavala EI, Li B, O'Gorman K, Shunkov MV, Kozlikin MB, Derevianko AP, Uliyanov VA, Goldberg P, Agadjanian AK, Vasiliev SK, Brink F, Peyrégne S, Slon V, Pääbo S, Kelso J, Meyer M, Roberts RG.   +17 more
europepmc   +1 more source

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A theoretical model for a new dating protocol for quartz based on thermally transferred OSL (TT-OSL)

Radiation Measurements, 2008
Abstract Recently a new dating procedure has been suggested, which is based on the thermally transferred optically stimulated luminescence (TT-OSL) signal that is measured after irradiated quartz is optically bleached and then preheated. Experimentally the TT-OSL signal was measured after a high temperature preheat ( 260 ∘ C for 10 s ...
Reuven Chen, Vasilis Pagonis, A G Wintle   +2 more
exaly   +2 more sources

Testing a single-aliquot protocol for recuperated OSL dating

Radiation Measurements, 2007
Abstract A single-aliquot dating procedure for measuring the equivalent dose in fine-grained quartz extracted from Chinese loess has been developed and tested. The optically stimulated luminescence (OSL) signal used for construction of the dose–response curve is termed the recuperated OSL (ReOSL) signal; it is the difference between the thermally ...
A G Wintle
exaly   +2 more sources

OSL dating of flood sediments in the North China Plain

Quaternary Geochronology, 2019
Abstract Partial bleaching is a major challenge in OSL (Optically Stimulated Luminescence) dating of flood sediments. Here we investigated both modern and palaeoflood sediments in the North China Plain. It demonstrates that most of the OSL ages for either coarse-grained (CG) or fine-grained (FG) quartz were overestimated in different levels.
Hua Zhao, Zhe Liu, Lei Song, Chengmin Wang, Sheng-Hua Li   +4 more
openaire   +2 more sources

OSL dating of paleoshorelines at Lagkor Tso, western Tibet

Quaternary Geochronology, 2009
Lagkor Tso, a saline lake located south of Gertse in western Tibet exhibits spectacular flights of paleoshorelines. Optically stimulated luminescence (OSL) dating on quartz using the single-aliquot regenerative-dose (SAR) protocol from five paleoshoreline deposits shows that the lake level was 130 m higher than the present lake surface 5.2 ka ago.
Li Sh
exaly   +6 more sources

ESR and OSL dating of fossil-bearing deposits from Naracoorte Cave Complex palaeontological sites, south Australia

Quaternary Geochronology, 2022
Available online 5 March 2022Little work has been undertaken on combined dating of sedimentary quartz grains using electron spin resonance (ESR) and optically stimulated luminescence (OSL) techniques in Australia.
Martina Demuro, Mathieu Duval
exaly   +2 more sources

The detection filter choice of the OSL dating instrument

Proceedings of 2011 International Conference on Electronic & Mechanical Engineering and Information Technology, 2011
In this paper, the dating principle of the optically stimulated luminescence is introduced, the construction of the optically stimulated luminescence (OSL) dating system, the composition of the detection filters, and the select method of the OSL dating instrument detection filters.
Ping Liang, Guang-xiang Wang, Ji-hua Wen
openaire   +1 more source

Thermal pre-treatment in the OSL dating of quartz: is it necessary?

Radiation Protection Dosimetry, 2006
Thermal treatment before optically stimulated luminescence (OSL) measurement is an important step in all widely accepted OSL dating procedures used with quartz. This is a major constraint on the design of a portable luminescence instrument for estimating ages in the field.
Ankjærgaard, C., Murray, A. S.; id_orcid 0000-0001-5559-1862, Denby, P. M.   +2 more
openaire   +3 more sources

OSL dating of sediments from deserts in northern China

Quaternary Geochronology, 2007
Abstract Aeolian samples from deserts in northern China were studied using the optically stimulated luminescence (OSL) of quartz and potassium (K) feldspar separates. K-feldspar has shown advantages over quartz for dating samples younger than 100 years, due to its more homogeneous equivalent dose ( D e ) values, higher internal dose rate and higher ...
Sun, J, Chen, YY, Yang, LR, Li, B, Li, SH   +4 more
openaire   +4 more sources