“…In detail, the pre‐110 Ma mafic rocks across central and eastern Asia generally have calc‐alkaline compositions with enriched radiogenic isotopes and negative anomalies in Nb and Ta (Gao et al., 2008; Kong et al., 2019; Sheldrick, Hahn, et al., 2020; Zhang et al., 2003), and carry significant contributions from lithospheric mantle (Geng, Liu, et al., 2019; Sheldrick et al., 2018; Zhang et al., 2002). In contrast, their post‐110 Ma counterparts (Figure 1b) are characterized by alkaline compositions with depleted radiogenic isotopes and positive anomalies in Nb and Ta (Meng et al., 2018; Togtokh et al., 2018; Wu, Ling, et al., 2017; Xu et al., 2018), and are sourced directly from the asthenosphere (Barry et al., 2003; Ma et al., 2014; Menzies et al., 1993; Xu et al., 2004). It is still unclear if the coincident transition represents a ubiquitous physicochemical process operating across central and eastern Asia, especially when the sources of mantle melts appear to be so diverse.…”