Figure 2

A-CN-K ternary diagram in molecular proportions with CIA values of PSAs from published literature (see Supplementary Table S1): the Sahara desert (red field); European loess deposits (blue field); the Gobi Desert (brown field); the Taklimakan Desert (dark brown field); Chinese Loess Plateau (olive field); northern China (purple field); Ordos Plateau (gold field); North American and Siberian loess deposits and southern West Greenland (dashed fields); and upper continental crust (UCC, white diamond) (see Supplementary Fig. S3). CIA values of NEEM ice core samples (Table 1) are shown in different colored stars.