Central Facilities. Luminescence dating is based on the principle that certain naturally occurring minerals e. Depending on the type of stimulation source, the phenomenon is termed thermally stimulated luminescence TL or optically stimulated luminescence OSL.
Recent work on infrared stimulated luminescence IRSL dating has focussed on finding and testing signals which show less or negligible fading. For Early Pleistocene samples of both European and Chinese loess natural post-IR IRSL signals lying in the saturation region of the laboratory dose response curve have been observed; this suggests that there is no significant fading in nature. As a contribution to the further testing of post-IR IRSL dating, we have used 18 samples from two Japanese loess profiles for which quartz OSL and tephra ages up to ka provide age control.
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.
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.
Late Pleistocene marine terraces formed during interglacial sea-level highstands are widely distributed across the Japanese islands. Tephrochronology has been used to correlate these terraces with marine isotope stages MIS Machida and Arai, Marker tephras, such as Ontake Pm1 On-Pm1,
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Optical dating is based on an anti-Stokes photon emission generated by electron-hole recombination within quartz or feldspar; it relies, by default, on destructive read-out of the stored chronometric information. We present here a fundamentally new method of optical read-out of the trapped electron population in feldspar. Since IRPL can be induced even in traps remote from recombination centers, it is likely to contain a stable non-fadingsteady-state component.
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.
Portable Spectrofluorimeter for non-invasive analysis of cultural heritage artworks using LED sources. Luminescence spectroscopy - Spatially resolved luminescence - Time resolved luminescence - Electron spin resonance ESR. Flint and heated rocks - Ceramics and pottery - Unheated rock surfaces - Tooth enamel and quartz grains - Sediment dating.