Osl dating sediments
The correlated composite core of 12.26 m length represents continuous accumulation of sediments in the lake basin since 31 ka. The age results of the two dating methods are generally in agreement.
Low lake levels after 6.5 ka were probably caused by declining temperatures after the warmer early Holocene, which had caused a reduction in water resources stored as snow, ice and frozen ground in the catchment.
(2017): Radiocarbon and optically stimulated luminescence dating of sediments from Lake Karakul, Tajikistan , Quaternary Geochronology, 41 , pp. doi: 10.1016/j.quageo.20 Lake Karakul in the eastern Pamirs is a large and closed-basin lake in a partly glaciated catchment.
The relatively close position of the coring location near the eastern shore of the lake implies that high Sed ARs resulted from low lake levels.
The cores were correlated using XRF analysis and dated using radiocarbon and OSL techniques.
Two parallel sediment cores were collected from 12 m water depth.
Aeolian samples from deserts in northern China were studied using the optically stimulated luminescence (OSL) of quartz and potassium (K) feldspar separates.