Sketch map of the Songliao paleolake and Basin. Geochemistry of loess deposits in northeastern China: constraint on provenance and implication for disappearance of the large Songliao palaeolake

Supplementary Fig. 7 Sketch map of the Songliao paleolake and Basin, illustrating distribution and evolution of the large Songliao paleolake in the Quaternary (modified from Yang et al., 1983; Sun, 1990; Qiu et al., 2012).