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Folded layered grey gneiss with steep E-W trending foliation (S 160-70) N is at the top of the image. Yarweelor Gneiss (reworked Yilgarn gneiss – protolith 3.7-2.4 Ga)

Folded layered grey gneiss with steep E-W trending foliation (S 160-70) N is at the top of the image. Yarweelor Gneiss (reworked Yilgarn gneiss – protolith 3.7-2.4 Ga)

Photograph: Cees Passchier