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Browsing Quaternary Environmental Change Group by Author "Wintle, Ann G."

Now showing items 1-19 of 19

Anomalous fading: A reply to the comment by Huntley on “Isochron measurements of naturally irradiated K-feldspar grains”

Li, Bo; Li, Sheng-Hua; Wintle, Ann G.; Zhao, Hui (2011-01)
Characteristics of thermally transferred optically stimulated luminescence (TT-OSL) in quartz and its potential for dating sediments

Tsukamoto, Sumiko; Duller, Geoffrey A. T.; Wintle, Ann G. (2008-08)

The temperature dependence, dose response and bleaching characteristics of the thermally transferred optically stimulated luminescence (TT-OSL) of sedimentary quartz were studied, in order to assess the potential of the ...
The dating and interpretation of a Mode 1 site in the Luangwa Valley, Zambia

Barham, Lawrence; Phillips, William M.; Maher, Barbara A.; Karloukovski, Vassil; Duller, Geoffrey A. T.; Jain, Mayank; Wintle, Ann G. (2011-05)

Flake based assemblages (Mode 1) comprise the earliest stone technologies known, with well-dated Oldowan sites occurring in eastern Africa between similar to 2.6-1.7 Ma, and in less securely dated contexts in central, ...
Emergence of modern human behavior: Middle Stone Age engravings from South Africa

Henshilwood, Christopher S.; d'Errico, Francesco; Yates, Royden; Jacobs, Zenobia; Tribolo, Chantal; Duller, Geoff A. T.; Mercier, Norbert; Sealy, Judith C.; Valladas, Helene; Watts, Ian; Wintle, Ann G. (2002-02-15)

In the Eurasian Upper Paleotithic after about 35,000 years ago, abstract or depictional images provide evidence for cognitive abilities considered integral to modern human behavior. Here we report on two abstract representations ...
Equivalent dose determinations for polymineralic fine-grains using the SAR protocol: application to a Holocene sequence of the Chinese Loess Plateau

Roberts, Helen M.; Wintle, Ann G. (2001-12-01)

A single-aliquot regenerative-dose (SAR) protocol, involving stimulation of the same disc with an infra-red laser diode followed by blue LEDs, was applied to polymineralic fine-grains. Infra-red stimulated luminescence ...
Equivalent dose distributions from single grains of quartz at Sibudu, South Africa: context, causes and consequences for optical dating of archaeological deposits

Jacobs, Zenobia; Wintle, Ann G.; Roberts, Richard G.; Duller, Geoffrey A. T. (2008-07)

Optical ages for 14 sediment samples collected from the post-Howiesons Poort, late Middle Stone Age (MSA) and final MSA deposits at Sibudu, KwaZulu-Natal, South Africa were reported in a companion paper (Jacobs, Z., Wintle, ...
Extending the chronology of deposits at Blombos Cave, South Africa, back to 140 ka using optical dating ot single an multiple grains of quartz

Jacobs, Zenobia; Duller, Geoff A. T.; Henshilwood, C. S.; Wintle, Ann G. (2006-09)

Optically stimulated luminescence (OSL) measurements are reported for both single aliquots (of two different sizes) and single grains of quartz from deposits within Blombos Cave. Ages have been obtained for six sediments ...
Holocene sediment-accumulation rates in the western Loess Plateau, China, and a 2500-year record of agricultural activity, revealed by OSL dating

Roberts, Helen M.; Wintle, Ann G.; Maher, Barbara A.; Hu, Mengyu (2001-05-01)

High-resolution optically stimulated luminescence (OSL) dating of a terraced loess section in the western margins of the Chinese Loess Plateau provides evidence of continuous and varying accumulation of dust throughout the ...
Infrared stimulated luminescence measurements of single grains of K-rich feldspar for isochron dating

Li, Bo; Li, Sheng-Hua; Duller, Geoff A. T.; Wintle, Ann G. (2011-02-01)

This paper explores the use of single grain luminescence measurements in isochron dating of K-rich feldspars. The thermal stability of individual feldspar grains was investigated using pulse annealing methods, which appears ...
Investigating quartz optically stimulated luminescence dose–response curves at high doses

Lowick, Sally E.; Preusser, Frank; Wintle, Ann G. (2010-10)

Despite the general expectation that optically stimulated luminescence (OSL) growth should be described by a simple saturating exponential function, an additional high dose component is often reported in the dose response ...
Isochron measurements of naturally irradiated K-feldspar grains

Li, Bo; Li, Sheng-Hua; Wintle, Ann G.; Zhao, Hui (2007-09)

The equivalent doses of K-feldspar grains in a range of grain sizes from 90 to View the MathML source diameter were measured using a single-aliquot regenerative-dose protocol for the infrared stimulated luminescence (IRSL) ...
Late-Holocene (post-4000 years BP) coastal dune development in Northumberland, northeast England

Wilson, Peter; Orford, Julian D.; Knight, Jasper; Braley, Sharon M.; Wintle, Ann G. (2001-02)

The recent environmental history of coastal dune systems in Northumberland, northeast England, has been examined using geomorphological, stratigraphical and sedimentological techniques linked to radiocarbon and infrared-stimulated ...
New ages for the post-Howiesons Poort, late and final Middle Stone Age at Sibudu, South Africa

Jacobs, Zenobia; Wintle, Ann G.; Duller, Geoffrey A. T.; Roberts, Richard G.; Wadley, Lyn (2008-07-01)

Optically stimulated luminescence (OSL) measurements are reported for single grains of quartz from deposits within Sibudu rock shelter. Such measurements enable rejection of unrepresentative grains and application of the ...
Optically stimulated luminescence dosimetry

Bøtter-Jensen, Lars; McKeever, Stephen W. S.; Wintle, Ann G. (Elsevier, 2003-10-24)

Optically Stimulated Luminescence (OSL) has become the technique of choice for many areas of radiation dosimetry. The technique is finding widespread application in a variety of radiation dosimetry fields, including personal ...
Overcoming environmental dose rate changes in luminescence dating of waterlain deposits

Li, B.; Li, S. H.; Wintle, Ann G. (Versita Publications, 2008-03-28)

This study investigates lacustrine and fluvial sediments on the Sala Us River in the Mu Us Desert in central north China. Significant changes in environmental dose rate in part of the section could be shown to have occurred ...
Rates of dust deposition between 50 ka and 20 ka revealed by OSL dating at Yuanbao on the Chinese Loess Plateau

Lai, ZhongPing; Wintle, Ann G.; Thomas, David S. G. (2007-05)

A new chronology has been constructed for an 18-m section of Malan Loess at Yuanbao, near Linxia, on the western edge of the Chinese Loess Plateau. The chronology has been obtained using the optically stimulated luminescence ...
A record of Holocene climate change in the Guanzhong Basin, China, based on optical dating of a loess-palaeosol sequence

Zhao, Hui; Chen, Fa-Hu; Li, Sheng-Hua; Wintle, Ann G.; Fan, Yu-Xin; Xia, Dun-Sheng (2007-11)

Optical dating was used to obtain a chronology for a loess-palaeosol sequence in the Guanzhong Basin on the Loess Plateau in China. The sedimentary sequence recorded two dry episodes (3.7 similar to 2.4 ka and 1.2 similar ...
Unprecedented last-glacial mass accumulation rates determined by luminescence dating of loess from western Nebraska

Roberts, Helen M.; Muhs, Daniel R.; Wintle, Ann G.; Duller, Geoff A. T.; Bettis III, E. Arthur (2003-05)

A high-resolution chronology for Peoria (last glacial period) Loess from three sites in Nebraska, midcontinental North America, is determined by applying optically stimulated luminescence (OSL) dating to 35–50 μm quartz. ...
Widespread middle Holocene dune formation in the eastern Upper Peninsula of Michigan and the relationship to climate and outlet-controlled lake level

Arbogast, Alan F.; Wintle, Ann G.; Packman, Susan C. (2002-01)

Dating of five widely spaced (noncoastal) dunes in eastern upper Michigan by optically stimulated luminescence of quartz establishes that eolian sand was last mobilized between ca. 7 and 5.5 ka in the region. Although this ...

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