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. Optically stimulated luminescence (OSL) of quartz is anestablished technique for dating late Pleistocene to late Holocenesediments. Unfortunately, this method is often limited to up to 100 ka(thousands of years). Recent developments in new extended-range luminescencetechniques show great potential for dating older sediments of middle andeven early Pleistocene age. These methods include thermally transferred OSL(TT-OSL) and violet stimulated luminescence (VSL) for quartz and post-infrared infrared stimulated luminescence (pIRIR) for feldspar. Here weinvestigate the luminescence behaviour of the TT-OSL, VSL, and pIRIR signalsof quartz and feldspar minerals of aeolian sediments of Nilotic origin fromthe eastern Mediterranean. We sampled a 15 m thick sequence (Kerem Shalom)comprising sandy calcic palaeosols, which is part of a sand sheet that coversan extensive region in south-western Israel. Dose recovery and bleachingexperiments under natural conditions indicated that the pIRIR250 signalis the most suitable for dating the Nilotic feldspar. Luminescence intensityprofiles revealed natural saturation of the three signals at the same depthof ∼6 m, indicating that ages of samples below that depth areminimum ages. Using TT-OSL and pIRIR250, a minimum age of 715 ka forthe base of the section was obtained, suggesting aeolian sand accumulationalong the eastern Mediterranean coastal plain already since the earlyPleistocene. Our results indicate that both TT-OSL and pIRIR250 canaccurately date aeolian sediments of Nilotic origin up to 200 ka and thatminimum ages can be provided for older samples up to the early Pleistocene.

Extended-range luminescence dating of quartz and alkali feldspar from aeolian sediments in the eastern Mediterranean