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The loess sediments widely distributed in the Central Shandong Mountains are sensitive records of East Asian monsoon changes for situating in a key region connected to the Eurasian Plate and the Pacific Ocean. However, the detailed processes of palaeoclimatic changes are poorly understood for the lack of high-resolution chronology. In this study, the chronology of Heishan loess palaeosol sequence in the Central Shandong Mountains is investigated using quartz SAR OSL and K-feldspar post-IR infrared (IR) stimulated luminescence (post-IR IRSL) dating method. The quartz is sensitive, fast component dominated and saturate at ~150 Gy (~50 ka). The measured K-feldspar pIRIR 290  D e  showed no dependency on the first IR stimulation temperature between 50°C and 260°C. The K-feldspar pIRIR 290  ages are consistent with the stratigraphy up to ~75 ka. In establishing the chronological sequence for the study section, quartz OSL ages  50 ka were selected. Derived sedimentation rates show two relatively rapid stages of ~32.0 ± 5.5 cm/ka for the palaeosol (~11–8 ka) and ~54.8 ± 1.1 cm/ka for the loess (~34–30 ka). An erosional hiatus of loess between ~30 ka and ~17 ka is identified. We conclude that the pIRIR 290  of loess sediments is applicable for samples during ~8–75 ka.

High resolution quartz OSL and K-feldspar post-IR IRSL dating of loess in the central Shandong Mountains (eastern China)