Formation ages and environmental conditions of paleo-periglacial involutions in the Yellow River source area, northeastern Tibetan Plateau - Yao Jin; Yuzhu Zhang; Ninglian Wang; Chun Chang Huang; Jiangli Pang; Yan Zhu; Longsheng Wang; Mengting Li; Sikai Wang; Pengpeng Cao; Qili Xiao; Jinpeng Zhou; et al. (Palaeogeography, Palaeoclimatology, Palaeoecology, 2025)