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.

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

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.