Analysis of hydrochemical characteristics, hydrochemical origin and travertine deposition capacity in the eastern margin of the Qinghai-Tibet Plateau: A case study of the Shenxianchi scenic spot and the Mouni Valley - Jiyu Tang; Wenhao Gao; Qingle Zeng; Xinze Liu; Ronglin Xu; Dong Sun; Liang Qin; Zhipeng Zhang (Quaternary International, 2026)