A 250,000-year record of lunette dune accumulation on the Southern High Plains, USA and implications for past climates

► We optically date 30 Southern High Plains (SHP) lunette samples. ► Timing of sample emplacement helps to evaluate history of landscape change. ► Samples show lunette processes are impacted by climate change. ► Lunettes accrete in discrete phases from penultimate glaciation through historic. ► Understanding of SHP landscape evolution expanded to over 250,000 years.