East Cliff at West Bay near Bridport (14)

East Cliff at West Bay near Bridport (14) – Recently fallen rocks on the beach are a blue-grey colour and not yellow as on the face of the cliff. Blue-grey is the natural colour of Bridport Sands but the pyrite which it contains is oxidised on exposure to air to give a superficial rusting that gives the yellow colour to the cliffs. This boulder also shows unweathered bioturbations – ichno- or trace fossils of animal burrows. fP1260035aBlog14