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

Down Cliff Sands

Overview

Originally known as the Laminated Beds.

Consisting of blue, brown and grey silty micaceous sands, clays and marls, with ferruginous layers, becoming browner and sandier towards the top of the division. Also contains bands of sandstone and the occasional ironstone nodule.

Known for its large oyster-like Gryphae cymbium and the Pseudopecten aequivalvis.

Pseudopecten aequivalvis

Exposures

Down Cliff Sands as found between St. Gabriel's Mouth and Seatown:

Down Cliff Sands as found between Seatown and Eype Mouth:

Down Cliff Sands as found between Eype Mouth and West Bay:

Zones, sub-zones and fossils

Zone	Sub-zone	Fossils
Amaltheus margaritatus	Amaltheus gibbosus (margaritatus)	Amaltheus margaritatus

Beds, geology and fossils

Bed	Name	Geology	Fossils found
24	Margaritatus Stone	0.3m reddish-brown weathering band of ironshot grey limestone	Amaltheus margaritatus Amaltheus subnodosus
23		5" laminated calcareous sandstone	Gibbirhynchia muirwoodae Gryphaea cymbium Pseudopecten equivalvis
		2" flat pebbles and rolled Belemnites in clayey sand
		14" laminated calcareous sandstone

Top of division
62' up	a 21 inch 'Conglomerate Bed' forming one band
38' up	a 4 inch thick pebble bed containing reddish nodules
8-14' up	a 8 inch thick black marl bed containing Isocrinus ossicles
datum of Starfish Bed at top of Eype Clay Bed

Photographs

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At Hope Corner, most of the Down Cliff Sands are covered by land-slipped material.

Between Doghouse Hill and Thorncombe Beacon, most of the light coloured land-slipped
material is from the Down Cliff Sands [lower] and Thorncombe Sands [upper].