Luminescence dating refers to a group of methods of determining how long ago mineral grains were last exposed to sunlight or sufficient heating. It is useful to geologists and archaeologists who want to know when such an event occurred. It uses various methods to stimulate and measure luminescence. All sediments and soils contain trace amounts of radioactive isotopes of elements such as potassium , uranium , thorium , and rubidium. These slowly decay over time and the ionizing radiation they produce is absorbed by mineral grains in the sediments such as quartz and potassium feldspar. The radiation causes charge to remain within the grains in structurally unstable “electron traps”. The trapped charge accumulates over time at a rate determined by the amount of background radiation at the location where the sample was buried. Stimulating these mineral grains using either light blue or green for OSL; infrared for IRSL or heat for TL causes a luminescence signal to be emitted as the stored unstable electron energy is released, the intensity of which varies depending on the amount of radiation absorbed during burial and specific properties of the mineral.
This erratum provides corrected Table 3 , Fig. Residual dose was D e after artificial sunlight bleaching for 3 h except for modern beach sand gsj which was bleached for h. Fading correction was performed based on Kars et al. To calculate the uncorrected ages, residual dose of modern beach sand gsjH was subtracted from D e of each sample.
D o values were calculated based on Wintle and Murray Fading test results.
A new approach towards anomalous fading correction for feldspar IRSL dating—tests on samples in field saturation. RH Kars, J Wallinga, KM Cohen. Radiation.
This article describes the principles of optical dating—an umbrella term for a family of related techniques based on the storage of radiation energy in light-sensitive traps in natural minerals—and its application to rock art. Only a few studies have used OSL or IRSL dating to constrain the age of rock paintings and engravings, and these applications can be grouped under two broad headings: dating of associated sediments and dating of rock surfaces.
These studies are briefly reviewed in this chapter, together with some comments on future directions and challenges for OSL and IRSL dating of rock art. Access to the complete content on Oxford Handbooks Online requires a subscription or purchase. Public users are able to search the site and view the abstracts and keywords for each book and chapter without a subscription.
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This paper aims to provide an overview concerning the optically stimulated luminescence OSL dating method and its applications for geomorphological research in France. An outline of the general physical principles of luminescence dating is given. A case study of fluvial sands from the lower terrace of the Moselle valley is then presented to describe the range of field and laboratory procedures required for successful luminescence dating. The paper also reviews the place of OSL dating in geomorphological research in France and assesses its potential for further research, by focusing on the diversity of sedimentary environments and topics to which it can be usefully applied.
Hence it underlines the increasing importance of the method to geomorphological research, especially by contributing to the development of quantitative geomorphology. They are now largely used to date not only palaeontological or organic remains, but also minerals that characterise detrital clastic sedimentary material.
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Knowledge of the age of fluvial deposits is an important aspect in the understanding of river dynamics, which is pre-requisite for sustainable river management and restoration back to more natural conditions and processes. Presented here is a case study on using feldspar Infrared Stimulated Luminescence IRSL to date low-energy fluvial sediments that formed after correction of the Upper Rhine River in the first half of the 19 th century.
A rigorous testing programme is carried out to characterise the IRSL properties of the samples, including thermal transfer, dose recovery and fading. All samples reveal complex distributions of equivalent dose, implying the presence of differential bleach-ing in the samples. It is shown that multi-grain aliquots overestimate the known-age by up-to years, i. The use of single grains results in ages that are in excellent agreement with the expected age, therefore the age overestimation in multi-grain aliquot measurements is likely explained by signal averaging effects.
While the application of single grains appears mandatory for dating young low-energy fluvial deposits, the small absolute offset associated with the multi-grain approach might be acceptable when dating sediments of such type that are older than a few years. Understanding centennial to millennial scale morpho-dynamics of fluvial systems is considered important for sustainable management and restoration of rivers Brierley and Fryirs, ; David et al.
To place local observations within the broader context of the environmental and human history, it is necessary to determine the timing of fluvial dynamics.
Luminescence dating of a gigantic palaeolandslide in the Gobi-Altay mountains, Mongolia
Seven heated stones and seven potshards were collected from three different archaeological sites in Denmark: one site from the early Pre-Roman Iron Age BC to AD , and two from the Viking period between AD and We first derive quartz OSL ages for these samples, to support the archaeological age control. The luminescence characteristics of the pIRIR signal are then investigated; in particular the dose recovery ratios are shown to be close to unity.
agreement with the sedimentation rate deduced from IRSL dating (±). Keywords: IRSL/OSL dating, fine grains, Lake Baikal, Last climate cycle. 1.
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Infrared stimulated Luminescence dating
An initial trial of IRSL dating of colluvium on an archaeological site has been outlined in Section ; a more comprehensive application, at Bruchsal Aue in.
Quartz has been the main mineral used for optically stimulated luminescence OSL dating of sediments over the last decade. The application of IRSL dating of feldspars, however, has long been hampered by the anomalous fading effect. These procedures have raised the prospect of isolating a non-fading IRSL component for dating Quaternary deposits containing feldspars. In this study, we review the recent progress made on 1 overcoming anomalous fading of feldspar, and 2 the development of pIRIR dating techniques for feldspar.
The potential and problems associated with these methods are discussed. This is a preview of subscription content, log in to check access. Aitken MJ,
Luminescence Dating: Applications in Earth Sciences and Archaeology
Special issue: Initial results from lake El’gygytgyn, western Beringia: first Research article 14 Mar This study tests the paleomagnetic and proxy-data based Mid- to Upper Pleistocene sediment deposition history of Lake El’gygytgyn by applying different approaches of luminescence dating techniques on sediment cores taken from the centre of the m deep lake. According to the independent age model, the lowest sample from
The paper also reviews the place of OSL dating in geomorphological research LEDs), or infrared light for feldspars (Infrared Stimulated Luminescence IRSL).
Luminescence dating is a geochronological technique that spans the Late Quaternary. It is particularly useful for minerogenic sediments, for example as optically stimulated luminescence OSL dating of quartz and infrared stimulated luminescence IRSL dating of feldspar. Thermoluminescence TL dating can also be used to determine the age of pottery. The Lund Luminescence Laboratory was established in , as the first of its kind in Sweden. In the adjoining rooms mechanical and chemical preparation of samples can be carried out under darkroom conditions.
Quartz has been the main mineral used for optically stimulated luminescence OSL dating of sediments over the last decade. The application of IRSL dating of feldspars, however, has long been hampered by the anomalous fading effect. These procedures have raised the prospect of isolating a non-fading IRSL component for dating Quaternary deposits containing feldspars.
In this study, we review the recent progress made on 1 overcoming anomalous fading of feldspar, and 2 the development of pIRIR dating techniques for feldspar. The potential and problems associated with these methods are discussed.
Neither low temperature IRSL measurements at. 50 ◦C nor any OSL dating approach on quartz yielded re- liable results. Deconvolution of.
Toggle navigation. Have you forgotten your login? Journal articles. Lamothe 3 M. Auclair 3 M. Balescu 1 AuthorId : Mail : Correspondent author. Lamothe 3 AuthorId : Author. Auclair 3 AuthorId : Author. Todbileg 4 AuthorId : Author. Hide details. Abstract : In an attempt to date a palaeolandslide that took place along the Baga Bogd Massif, in Mongolia, the infrared stimulated luminescence IRSL method has been applied to lacustrine silty sediments directly overlying the landslide mass.
The IRSL ages on alkali feldspars corrected for long-term fading using the protocol of Mejdahl , suggest that the palaeolandslide occurred at the beginning of the Last Interglacial. These are in good agreement with the ;10;Be cosmogenic dates obtained on faulted and abandoned alluvial fans in the Gobi-Altay mountains.
Lund Luminescence Laboratory
Published in Quaternary Geochronology in April, Terrace correlation was based upon: a analysis of aerial photographs, geomorphological mapping and field topographic survey; b sedimentology of the deposits; and c luminescence dating. Sediment sampled for luminescence dating gave unusually high dose rates, of between 3.
Geological records indicate that the hyper-aridity in the Atacama Desert has prevailed since at least the mid-Miocene, with shorter periods of increased humidity punctuating long-term aridity. While 10 Be surface exposure ages point to long-term surface stability of the flat upslope surface, a combination of humidity-driven soil creep, overland flow and soil creep related to seismic shaking, caused denudation of the hillslope and accumulation of several metres of colluvium over much shorter timescales during the last ka.
A robust chronology for the hillslope sediments has been established by using Infrared Stimulated luminescence pIR-IR protocol on K-feldspar extracts from nine samples collected within the accumulation. A series of tests has been carried out to confirm the suitability of the method. The estimated ages indicate accelerated sedimentation at 35—80 ka, and — ka, which are interpreted as periods with more humid climate conditions than present.
These findings agree with climate variations in the hyper-arid Atacama indicated by the activity of coastal alluvial fans and river catchments. Identification of humid periods in the Atacama Desert through hillslope activity established by infrared stimulated luminescence IRSL dating. T1 – Identification of humid periods in the Atacama Desert through hillslope activity established by infrared stimulated luminescence IRSL dating. N2 – Geological records indicate that the hyper-aridity in the Atacama Desert has prevailed since at least the mid-Miocene, with shorter periods of increased humidity punctuating long-term aridity.
While 10Be surface exposure ages point to long-term surface stability of the flat upslope surface, a combination of humidity-driven soil creep, overland flow and soil creep related to seismic shaking, caused denudation of the hillslope and accumulation of several metres of colluvium over much shorter timescales during the last ka.
AB – Geological records indicate that the hyper-aridity in the Atacama Desert has prevailed since at least the mid-Miocene, with shorter periods of increased humidity punctuating long-term aridity. Earth Sciences. Overview Fingerprint. Abstract Geological records indicate that the hyper-aridity in the Atacama Desert has prevailed since at least the mid-Miocene, with shorter periods of increased humidity punctuating long-term aridity.
Skup 4. In the easternmost part of Croatia, from Vukovar to Ilok, loess and loess-like deposits up to 30 m thick predominate, forming a loess plateau. This paper presents the result of the infrared stimulated luminescence IRSL dating from the three samples.
sensitive to infrared photons, so they are usually stimulated using infrared LEDs and the violet/blue IRSL. emissions are chosen for dating. The contrasting.
Over the last 60 years, luminescence dating has developed into a robust chronometer for applications in earth sciences and archaeology. The technique is particularly useful for dating materials ranging in age from a few decades to around ,—, years. In this chapter, following a brief outline of the historical development of the dating method, basic principles behind the technique are discussed.
This is followed by a look at measurement equipment that is employed in determining age and its operation. Luminescence properties of minerals used in dating are then examined after which procedures used in age calculation are looked at. Sample collection methods are also reviewed, as well as types of materials that can be dated. Continuing refinements in both methodology and equipment promise to yield luminescence chronologies with improved accuracy and extended dating range in the future and these are briefly discussed.
Luminescence – An Outlook on the Phenomena and their Applications. Luminescence dating refers to age-dating methods that employ the phenomenon of luminescence to determine the amount of time that has elapsed since the occurrence of a given event. In this chapter, the application of luminescence techniques in dating geological and archaeological events is examined. Generally, the term luminescence dating is a collective reference to numerical age-dating methods that include thermoluminescence TL and optically stimulated luminescence OSL dating techniques.
Other terms used to describe OSL include optical dating [ 1 ] and photon-stimulated luminescence dating or photoluminescence dating [ 2 ]. Luminescence dating methods are based on the ability of some dielectric and semiconducting materials to absorb and store energy from environmental ionizing radiation.