“…The Himalayan leucogranites have a widespread distribution throughout the Himalayan orogenic belt, with emplacement ages varying from Eocene to Miocene (Goscombe et al, 2018;Kellett et al, 2019;Jessup et al, 2019;Cao et al, 2020;Zhang et al, 2020;Wu et al, 2021;Cao et al, 2022;Tang et al, 2022). These granites have extremely negative ε Hf (t) values, which gradually decreased with decreasing formation age (Cao et al, 2022) (Figure 7c) and are considered to have formed primarily by partial melting of metamorphic mudstone, orthogneiss, or metagraywacke of the Tethyan Himalayan Sequence and Greater Himalayan Crystalline Complex (Chen et al, 2022;Gu et al, 2022;Harris & Massey, 1994;Ji et al, 2022).…”