Redcar Mudstone Formation

The Redcar Mudstone Formation is a geological formation in North Yorkshire, England. Part of the Lias Group, it was deposited in the Hettangian to Pliensbachian stages of the Early Jurassic. The lithology consists of fissile mudstones and siltstones, with the lower part having thin beds of limestone and the upper part having thin beds of sandstone.^[1] The Redcar Mudstone Formation at Wine Haven, Robin Hood's Bay, Yorkshire contains the Global Boundary Stratotype Section and Point (GSSP) for the base of the Pliensbachian.^[2]

Redcar Mudstone Formation
Stratigraphic range: Hettangian-Pliensbachian ~201–189 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Redcar Rocks exposed near Redcar, Yorkshire
Type	Geological formation
Unit of	Lias Group
Underlies	Staithes Sandstone Formation
Overlies	Lilstock Formation
Thickness	up to 283 metres (930 ft)
Lithology
Primary	Mudstone, siltstone
Other	Sandstone, limestone
Location
Coordinates	54.6°N 1.1°W / 54.6; -1.1
Approximate paleocoordinates	41.1°N 2.3°E / 41.1; 2.3
Region	North Yorkshire
Country	United Kingdom
Extent	Cleveland Basin
Type section
Named for	Redcar
Redcar Mudstone Formation (the United Kingdom) Show map of the United Kingdom Redcar Mudstone Formation (North Yorkshire) Show map of North Yorkshire