Cromer Forest Bed

Cromer Forest-bed Formation
Stratigraphic range: Early Middle Pleistocene 0.8–0.5 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Cromer Forest-bed Formation exposed at the base of the West Runton Cliffs
Type	Geological formation
Unit of	Dunwich Group
Sub-units	Sheringham Member, Runton Member, West Runton Member, and Bacton Member
Underlies	Middle Pleistocene glacial deposits
Overlies	Wroxham Crag Formation or unconformity with Chalk Group
Thickness	6-to-8-metre (20 to 26 ft)
Lithology
Primary	sands and silts
Other	peat, mud, silty marl
Location
Coordinates	52°56′28″N 1°15′11″E / 52.941°N 1.253°E / 52.941; 1.253
Region	Norfolk
Country	England
Type section
Named for	Cromer
Named by	Clement Reid
Location	The coast of North Norfolk from Weybourne to Happisburgh
Year defined	1882
Country	England

The Cromer Forest-bed Formation, sometimes known as the Cromer Forest Bed, is a geological formation in Norfolk, England. It consists of river gravels, estuary and floodplain sediments predominantly silt, sand, and muds as well as peat along the coast of northern Norfolk.^[1] It is the type locality for the Cromerian Stage of the Pleistocene between 0.8 and 0.5 million years ago.^[2] The deposit itself range varies in age from about 0.8 to 0.5 million years ago. It is about 6-to-8-metre (20 to 26 ft) thick and is exposed in cliff section near the village of West Runton.