Extending the age limit of quartz OSL dating of Chinese loess using a new multiple-aliquot regenerative-dose (MAR) protocol with carefully selected preheat conditions

2021 ◽  
Vol 62 ◽  
pp. 101144
Author(s):  
Xulong Wang ◽  
Jun Peng ◽  
Grzegorz Adamiec
Keyword(s):  
Osl Dating ◽  
Chinese Loess ◽  
Age Limit

scholarly journals Recuperated OSL dating of fine-grained quartz in Chinese loess

2006 ◽  
Vol 1 (2) ◽  
pp. 89-100 ◽  
Author(s):  
X.L. Wang ◽  
Y.C. Lu ◽  
A.G. Wintle
Keyword(s):  
Osl Dating ◽  
Chinese Loess ◽  
Fine Grained

scholarly journals Assessing the dating potential of violet stimulated luminescence protocols

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Mariana Sontag-gonzález ◽  
Marine Frouin ◽  
Bo Li ◽  
Jean-Luc Schwenninger
Keyword(s):  
Osl Dating ◽  
Archaeological Sites ◽  
High Dose ◽  
Measurement Protocol ◽  
New Development ◽  
Age Limit ◽  
Del Rio ◽  
Validation Tests ◽  
Further Development ◽  
Higher Doses

AbstractViolet stimulation is a new development in optical dating which has been suggested to extend the upper age limit of optically simulated luminescence (OSL) dating of quartz. Despite the reported advantage, few validation tests and applications have been published so far. The present study investigated the violet stimulated luminescence (VSL) using a single aliquot regenerative dose (SAR) protocol and a multiple aliquot additive dose (MAAD) protocol. Sedimentary quartz samples from four archaeological sites in Europe with independent age controls spanning 40–900 ka were used, including Grotte Mandrin (France), Brooksby Quarry (UK), Cueva Negra del Estrecho del Río Quípar (Spain) and Sima de las Palomas del Cabezo Gordo (Spain). The equivalent dose of a relatively young sample (~40 ka) was successfully determined. However, significant underestimations were observed for older samples with higher doses. These findings indicate the need for further development of the measurement protocol to date high-dose natural samples.

Examining the potential of high sampling resolution OSL dating of Chinese loess

2007 ◽  
Vol 2 (1-4) ◽  
pp. 15-22 ◽  
Author(s):  
Thomas Stevens ◽  
Simon J. Armitage ◽  
Huayu Lu ◽  
David S.G. Thomas
Keyword(s):  
Osl Dating ◽  
Chinese Loess ◽  
High Sampling

TT-OSL dating of Longyadong Middle Paleolithic site and paleoenvironmental implications for hominin occupation in Luonan Basin (central China)

2013 ◽  
Vol 79 (2) ◽  
pp. 168-174 ◽  
Author(s):  
Xuefeng Sun ◽  
Huayu Lu ◽  
Shejiang Wang ◽  
Shuangwen Yi ◽  
Chen Shen ◽  
...  
Keyword(s):  
Osl Dating ◽  
Central China ◽  
Chinese Loess Plateau ◽  
Middle Pleistocene ◽  
Middle Paleolithic ◽  
Paleolithic Site ◽  
Chinese Loess ◽  
Dry Climates ◽  
Luonan Basin ◽  
The Chinese Loess Plateau

AbstractDating middle Pleistocene hominin occupations alongside the reconstruction of paleoenvironments in China between 700 and 100 ka has always been a challenging task. In this paper, we report thermally transferred optically stimulated luminescence (TT-OSL) dating results for a Middle Paleolithic site in the Luonan Basin, central China, which we have named Longyadong Cave. The results suggest that the age of cave infilling and the deposition of sediments outside the cave range between 389 ± 18 and 274 ± 14 ka. These deposits are stratigraphically and geochronologically correlated with the L4 loess and S3 paleosol units of the typical loess–paleosol sequence of the Chinese Loess Plateau, and with Marine Isotope Stages (MIS) 10 to 9, respectively. On the basis of these new ages and the available paleoenvironmental data, it is suggested that the Longyadong hominins might have occupied the site both in glacial and interglacial periods, demonstrating that they coped well with environmental change in this mountainous region in warm/wet and cold/dry climates. The study further implies that the hominins abandoned the Longyadong Cave between 274 ± 14 and 205 ± 19 ka, when it was sealed by alluvial and slope deposits.

scholarly journals Optically stimulated luminescence and isothermal thermoluminescence dating of high sensitivity and well bleached quartz from Brazilian sediments: from Late Holocene to beyond the Quaternary?

2016 ◽  
Vol 46 (suppl 1) ◽  
pp. 209-226 ◽  
Author(s):  
André Oliveira Sawakuchi ◽  
Vinicius Ribau Mendes ◽  
Fabiano do Nascimento Pupim ◽  
Thays Desiree Mineli ◽  
Ligia Maria Almeida Leite Ribeiro ◽  
...  
Keyword(s):  
Late Holocene ◽  
High Sensitivity ◽  
Equivalent Dose ◽  
Optically Stimulated Luminescence ◽  
Osl Dating ◽  
Fluvial Sediments ◽  
Dose Distributions ◽  
Age Limit ◽  
Sediment Mixture

ABSTRACT: The development of optically stimulated luminescence (OSL) dating of sediments has led to considerable advance in the geochronology of the Quaternary. OSL dating is a well established technique to determine sediment burial ages from tens of years to few hundred thousand years. Recent studies have shown that Quaternary sediments of Brazil are dominated by quartz grains with high luminescence sensitivity, allowing the determination of precise and reliable OSL burial ages. In this paper, we show examples of OSL dating of quartz aliquots and single grains from different regions in Brazil, including young coastal-eolian Late Holocene (< 100 years) to Late Pleistocene (~ 150 ka) fluvial sediments. We discuss the OSL data and ages of sediments from carbonate and terrigenous (distributary and tributary systems) fluvial depositional contexts in Brazil. Most of the studied fluvial sediments show equivalent dose distributions with low to moderate dispersion, suggesting well bleached sediments. The comparison between aliquot and single grain data suggests that high overdispersion in equivalent dose distributions of some samples is more related with sediment mixture due to bioturbation than with incomplete bleaching during transport. Well bleached fluvial sediments contrast with the poor bleached pattern usually described for fluvial sediments in the literature. A large part of the fluvial sedimentary record in Brazil is older than the age limit for quartz OSL dating using blue light stimulation. Thus, isothermal thermoluminescence (ITL) dating protocols were tested for dating of fluvial sands from the Xingu River (eastern Amazonia). The studied sample can recover reliable equivalent doses up to 1600 Gy using the ITL 310oC signal. Therefore, this signal would be suitable to extend the age limit of quartz luminescence to the whole Quaternary or beyond (> 2 Ma) in the low dose rate (0.5 - 1.0 Gy/ka) environments typical for Brazilian sediments.

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