The dataset summarizes measurement data that were used to calculate IRSL rock surface burial ages for Holocene and Pleistocene littoral cobbles from Chile. It consists of sensitivity-corrected natural luminescence signals (Ln/Tn values) from the surfaces of 12 cobbles. For each sample Ln/Tn values for the uppermost 10-20 mm are presented in 1-mm steps. The information inferred from this dataset was used to investigate luminescence signal resetting in the littoral zone and to date Pleistocene marine terraces.