“…Australia hosts geochemically diverse source areas 29,32,40 dominating the dust deposition in the mid-latitude South Pacific in the present day 15,32,34 . The Nd isotope compositions of PSAs in West (ɛ Nd of −17 ± 8.3, 2 SD, n = 21) and South Australia (ɛ Nd of −12.2 ± 6.1, 2 SD, n = 38) (Supplementary Table 2) 29,40 are inconsistent with the observed endmember ɛ Nd range between− 4 and~−6. The large Murray and Darling river basins in East Australia have been considered as important dust source regions during the last glacial period 29,52,53 .…”