Results 191 to 200 of about 4,284 (229)

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

OSL dates for the ancient geometric earthworks of Kazakhstan

Archaeological Research in Asia, 2016
Abstract Large-scale earthworks ranging from 90 m to over 400 m in length, recently discovered in northern Kazakhstan, have come to be commonly named as the “Geoglyphs of Turgai”. These monuments mainly have been found in northern Kazakhstan within the Turgai deflection.
G. Motuzaite Matuzeviciute, A.V. Logvin, I. Shevnina, A.M. Seitov, J. Feng, L. Zhou   +5 more
openaire   +1 more source

OSL properties of NaCl relative to dating and dosimetry

Radiation Measurements, 2000
Abstract The luminescence properties of NaCl are discussed. Attention is focussed predominantly upon the optically stimulated luminescence (OSL) signal (UV emission) of NaCl (420–560 nm stimulation). The results from experiments relevant to geological dating applications, such as signal resetting, dose response and thermal stability, are described ...
R.M. Bailey, G. Adamiec, E.J. Rhodes
openaire   +1 more source

Simultaneous OSL and TL dating of sediments

Quaternary Science Reviews, 2001
Abstract This paper presents examples of application of simultaneous OSL and TL dating to samples from two different sedimentary environments that usually give rise to a number of interpretation problems. The presented method provides means of quantifying the effectiveness of bleaching of grains during depositional processes and consequently enables ...
openaire   +1 more source

Progress towards a polymineral single-aliquot OSL dating procedure

Radiation Protection Dosimetry, 2006
Published single-aliquot regenerative-dose (SAR) procedures for quartz use a 'cutheat' different from the pre-heat. In contrast, previous work has shown that the SAR procedure can be used to correct for sensitivity changes exhibited by feldspars if the cutheat is equal to the pre-heat. In this paper, a procedure that corrects for sensitivity changes in
M W, Blair, E G, Yukihara, S W S, McKeever   +2 more
openaire   +2 more sources

OSL Dating in Archaeology

2006
The OSL (optically stimulated luminescence) dating method exploits dosimetric properties of grains of minerals naturally occurring in sediments and man-made materials.
openaire   +1 more source

OSL dating of sediments from the Gobi Desert, Southern Mongolia

Quaternary Geochronology, 2010
Abstract The present study focuses on the chronological relationship between alternating dune sand and silty water-lain sediments in the central part of the Khongoryn Els dune field in the Gobi Desert, Southern Mongolia. The 23 m high section evolved from the construction of a natural dam by west–east moving sand dunes and fluvial inundation by a ...
Hülle, D., Hilgers, Alexandra, Radtke, Ulrich, Stolz, C., Hempelmann, N., Grunert, J., Felauer, T., Lehmkuhl, F.   +7 more
openaire   +1 more source

Application of OSL dating on coastal sediments

2011
The main aim of this research work is the application of contemporary techniques in optically stimulated luminescence (OSL) dating to reveal the chronology of coastal deposits from various geographical and geological settings and to investigate the relationship between periods of sediment accumulation and climate change.
openaire   +1 more source

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.
Lee, J., Li, SH., Aitchison, J.C.
openaire   +5 more sources