Osl dating sand
Optically stimulated luminescence (OSL) dating and Infrared stimulated luminescence (IRSL) dating of sand sized (100–200 µm) grains of quartz and feldspar, respectively, were tested in the present study.
The luminescence properties of quartz were not suitable for OSL dating.
The Ghaggar River flood plain at Rajasthan, northwestern India, in the northern margin of the Thar Desert, is bordered by sand dunes.
Elucidation of the environmental changes of the Ghaggar Basin requires knowledge of many aspects of sand dune formation.
We measured optically stimulated luminescence (OSL) using the single aliquot regenerative-dose (SAR) protocol for sand of eight palaeo-dunes and two flood silts of both sides of the present Ghaggar Basin and Chautang Basin flood plains.
Their OSL ages were obtained respectively, as 15–10 ka or 5 ka, and 9–8 ka.
Optically stimulated luminescence (OSL) dating analysis has indicated an age ranging from 15,161 ± 744 to 17,434 ± 896 years for the liquefaction features.
Although volcanic eruptions in Iceland cannot be discounted as a contributory factor, a more likely driver of change in sand dune systems is the enhanced N Atlantic storminess suggested by ice core records from Greenland.
Hence, IRSL dating of feldspar grains was applied to all samples with subsequent correction for anomalous fading.
Two periods of increased aeolian activity were identified in the sediment succession at Tura.
During periods of climatic deterioration the declining productivity of other agricultural land places enhanced demands on agriculturally marginal sand dunes, leading to further destabilization and the potential for enhanced sand transport events.
A sand dune intercalated by soil horizons was investigated using luminescence and radiocarbon dating methods, to determine the time of aeolian activity and soil formation in the north-eastern part of the Gödöllő Hills in Hungary.