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Migmatitic gneiss with melt veins axial planar to older melt veins which have been folded; the last veins are deformed by the Errabiddy shear zone mylonites. Yarweelor Gneiss (reworked Yilgarn gneiss – protolith 3.7-2.4 Ga)

Migmatitic gneiss with melt veins axial planar to older melt veins which have been folded; the last veins are deformed by the Errabiddy shear zone mylonites. Yarweelor Gneiss (reworked Yilgarn gneiss – protolith 3.7-2.4 Ga)

Photograph: Cees Passchier