“…This means that pedogenic Gt/Hm ratios exclude the effect of the duration of pedogenesis (e.g., Balsam et al., 2004), which has been a major issue in the application of various pedogenic and chemical weathering proxies to infer past climate and environment changes (e.g., Kong et al., 2020). Because of these advantages, the Gt/Hm ratios have been widely used as a valuable proxy of environmental and climatic changes in terrestrial (Ao et al., 2020; Balsam et al., 2004; Hao et al., 2009; Ji et al., 2001; Jia et al., 2018; Lepre & Olsen, 2021) and marine archives (Abrajevitch et al., 2009; Clift et al., 2014; Zhang et al., 2009; Zhou et al., 2021). However, the precondition for using Gt/Hm ratios necessitates the accurate quantification of their ratios.…”