DescriptionParagneis Nontron.jpg English: Neoproterozoic plagioclase-bearing paragneis sequence below Nontron Château, Dordogne, France. Original grauwacke...
DescriptionParagneisNontron.jpg English: Paragneiss from the Arvernian Domain near Nontron, Dordogne, France. Showing orthogonal porphyroblasts (C/S structures)...
