Cosmogenic nuclide concentrations and burial ages for Xujiayao-Houjiayao site.

† The [26Al]1 values were initially measured with relative counting errors of 5–10%. The [26Al]2 values were obtained by re-measuring the remaining Al2O3 powder after the installation of a gas-filled magnet into the AMS at PRIME Lab. The weighted mean of the two measurements, 1.722 ± 0.034 and 0.316 ± 0.013 (106 at/g), respectively, were used to calculate the 26Al/10Be ratios and then the age results.Cosmogenic nuclide concentrations and burial ages for Xujiayao-Houjiayao site.