“…10 m north to HSZ1 section, and only one OSL sample was taken. Some dry sheep dungs and bones were found in three different layers, where three OSL samples were taken from, in the HSZ3 section, and a (Han et al, 2014), Erfang site , Xiao Qaidam site (Huang et al, 1987, Brantingham andSun et al, 2010), Lenghu site in the northern QB (Owen et al, 2006, Brantingham and, Nuomuhong site (Zeng, 2006), Jiangxigou site (e.g., Madsen et al, 2006;Brantingham and Gao, 2006;Sun et al, 2012), and some sites in this study (HSZ, HBC and XRH). The red dots with white centers display the towns and sections in this region, respectively.…”