OSL, TL and IRSL emission spectra of sedimentary quartz and feldspar samples

Lomax, Johanna; Mittelstraß, Dirk; Kreutzer, Sebastian; Fuchs, Markus

doi:10.1016/j.radmeas.2015.02.018

Cited by 14 publications

(10 citation statements)

References 33 publications

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“…This combination restricts the detection window to ca. 350 nm to 400 nm, thus is centered on the main OSL emission of quartz (Huntley, Godfrey‐Smith, & Haskell, ; Lomax, Mittelstraß, Kreutzer, & Fuchs, ). Stimulation with infrared (IR) laser diodes (850 ± 3 nm) was used to check for the purity of the quartz extracts.…”

Section: Sampling Strategy and Methodsmentioning

confidence: 99%

Chronology of an ancient water reservoir and the history of human activity in the Negev Highlands, Israel

et al. 2018

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In antiquity, the development of techniques to collect and store water was fundamental to sustain life in arid regions. One way to overcome the problem of water supply in the desert was to construct water reservoirs and cisterns which collect surface runoff during rare rain events. Indeed, open reservoirs and rock‐cut cisterns are widely spread over the arid zone of the Negev Highlands. They were an important component of human activity in the area. Today, they can serve as sedimentary archives for archaeological and paleoenvironmental reconstruction. To shed more light on this valuable archive, the chronology of an ancient stone‐lined, open reservoir was established by optically stimulated luminescence dating. By determining the age of the deposition of sediments associated with the reservoir, it was possible to constrain its construction (8th–11th centuries C.E.), duration of use (up to ca. 15th century C.E.), and final refilling (from the 15th century C.E. to the modern era). These results indicate that most human activity related to the reservoir occurred between the 8th‐to‐11th and the 15th centuries C.E., when permanent settlements are not recorded archaeologically in the region, suggesting that the studied water reservoir was primarily utilized by pastoral nomads.

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Section: Sampling Strategy and Methodsmentioning

confidence: 99%

Chronology of an ancient water reservoir and the history of human activity in the Negev Highlands, Israel

et al. 2018

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“…; Lomax et al . ). To test for potential feldspar contamination, IR laser diodes (850±3 nm) and a filter combination with a Semrock HC414/46 and a Schott BG39 were used.…”

Section: Luminescence Datingmentioning

confidence: 97%

A luminescence‐based chronology for the Harletz loess sequence, Bulgaria

Lomax

Fuchs

Antoine

et al. 2018

Boreas

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The Harletz loess‐palaeosol sequence is located in northwestern Bulgaria and represents an important link between well‐studied loess sequences in eastern Romania and further sites to the west of the Carpathians (e.g. Serbia and Hungary). The aim of this study was to establish a chronostratigraphy of the deposits, using various methods of luminescence dating, together with basic stratigraphical field observations as well as magnetic properties. Luminescence dating was carried out using the quartz fine grain fraction and a SAR protocol, and the feldspar coarse grain fraction, applying the MET‐pIRIR protocol. Due to underestimation of the quartz fine grain fraction in the lower parts of the sequence, the resulting chronology is mainly based on the feldspar ages, which are derived from the stimulation temperature at 150 °C. A comparison with nearby sequences from Serbia, Hungary and Romania, and interpretations obtained through the stratigraphical and sedimentological signature of the sequence, supports the established chronology. Our data suggest that the prominent palaeosol (soil complex) in the upper quarter of the sequence was formed during MIS 5. It would follow that large parts of the Last Glacial loess overlying this palaeosol were probably eroded, and that the thick loess accumulation underlying this soil complex can be allocated to the penultimate glacial (MIS 6). A prominent MIS 6 tephra, which has been reported from other sequences in the area, is also present at Harletz.

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“…Optically stimulated luminescence signals from quartz: a review 16Recently, Lomax et al (2015) have measured both TL and OSL emission spectra on the same samples of sedimentary quartz. TL spectra were obtained for both naturally irradiated and laboratory irradiated grains, the latter enabling the 110°C peak to be measured.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…The importance of the measurements of Lomax et al (2015) relates to an early discussion of whether there is a shift in wavelength of the TL emission as a function of temperature. Franklin et al (1995) observed a shift of wavelength from 376 nm for the 110°C TL peak to 430 nm for the 325°C TL peak.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Optically stimulated luminescence signals from quartz: A review

Wintle

Adamiec

2017

Radiation Measurements

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Optically stimulated luminescence (OSL) was first observed from natural quartz 30 years ago. Since it increases with exposure to radiation, OSL has been developed as a dating tool for sediments. Most commonly, the OSL signal is observed using optical filters that pass wavelengths centred on 340 nm during optical stimulation at 470 nm. Experimental evidence behind the choice of measurement conditions for dating is presented, for example, information on the emission spectra. Different methods of optical stimulation are reviewed, including non-linear application of stimulation power; these are related to isolation of the fast OSL component that is most appropriate for dating sediments. Practical methods for fast OSL component separation are mentioned. Information on the stimulation process has been obtained by varying the wavelength during measurement and by varying the stimulation temperature. On the other hand, information on the recombination process is provided by observing the OSL emitted when the stimulation source is pulsed; this has practical applications when feldspar contamination is expected. Although laboratory experiments imply more than adequate thermal stability of the fast OSL signal for dating back to a million years, ages determined in the laboratory using the single aliquot regenerative dose procedure do not agree with independent ages. To address this problem, luminescence signals derived from the same electron trap, as well as those resulting from stimulation in the infrared (875 nm) and in the violet (405 nm), have been investigated as potential dating tools.

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OSL, TL and IRSL emission spectra of sedimentary quartz and feldspar samples

Cited by 14 publications

References 33 publications

Chronology of an ancient water reservoir and the history of human activity in the Negev Highlands, Israel

Chronology of an ancient water reservoir and the history of human activity in the Negev Highlands, Israel

A luminescence‐based chronology for the Harletz loess sequence, Bulgaria

Optically stimulated luminescence signals from quartz: A review

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