de Broekert: Stratigraphy and origin of regolith, SW Yilgarn Craton 
Nuendah Formation 
(composite section) 
Figure 10. Composite stratigraphic section of Nuendah Formation lithofacies with representative optical photomicrographs. A: Gravelly 
muddy sand lithofacies. Note rounded quartz grains (R) and ferruginous nodules (N). B: Muddy sand lithofacies. C: Clayey sand. 
Dominant minerals are quartz (Q), microcline (M), and plagioclase (P). A,B = sample YN43 12.6 m, B = sample EY57/1, C = sample 
YN43 2.0 m. A cross-polarized light; B,C plane-polarized light. 
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