Belemnite Marl	Black Ven Marl	Down Cliff Sands	Eype Clay Bed
Green Ammonite Bed	Junction Bed	Shales with Beef	Thorncombe Sands	Three Tiers Bed

Three Tiers Bed

Overview

The Three Tiers Bed (averaging 10m) appears near to sea level at Broom Cliff, well to the east of Charmouth, but it tends to be hidden behind a covering of more recent slipped material that has from the top of the cliff. 

This bed is formed from courses of hard micaceous silty siltstone. Fallen blocks litter the beach below Golden Cap. 

The bottom Tier is the most fossiliferous.

Exposures

Three Tiers Bed as found between Charmouth and St. Gabriel's Mouth:

Three Tiers Bed as found between St. Gabriel's Mouth and Seatown:

Fossils

The lower of the tiers (Bed 6 by Howarth), has the common ammonite Amaltheus stokesi along with Tragophylloceras and the rare Lytoceras ammonite, as well as several gastropods.

Amaltheus stokesi ammonite
sourced from Herve Chatelier's Office

Zones, sub-zones and fossils

Beds, geology and fossils

Photographs

The Three Tiers Bed is the most distinctive marker on the cliffs at Golden Cap, from the east.

The Three Tiers Bed is the most distinctive marker on the cliffs at Golden Cap, from the west.

A close up of the Three Tiers Bed at Golden Cap, viewed from below.