The cliffs to the east of the harbour are composed of Bridport Sand Formation and Inferior Oolite, while immediately to the west they are Frome Clay (Upper Fullers Earth) and Forest Marble. The Bridport Sands deposits were laid down in the Toarcian Age toward the end of the Early Jurassic; they are arranged horizontally with clear banding visible alternating between harder and softer material. The cliff's distinctive colour is a result of oxidisation of fine pyrite grains, resulting in limonite. The Frome Clay and Forest Marble of the West Cliff are younger and were formed in the Bathonian Age of the Middle Jurassic. The section of the West Cliff closest to the harbour has been engineered as part of coastal defence management; large protective boulders on the foreshore are backed by a sea wall, promenade and artificial grass-covered slope

Date: 02/05/2016

Location: West Bay

Photographer: Andy Kench