Elgol Sandstone Formation
Stratigraphic range: Bajocian–Bathonian PreꞒ Ꞓ O S D C P T J K Pg N
Sandstones of the Elgol Sandstone Formation, exposed in the cliff behind Elgol school
Type	Geological formation
Unit of	Great Estuarine Group
Underlies	Lealt Shale Formation
Overlies	Cullaidh Shale Formation
Thickness	up to 32 metres (100 ft)
Lithology
Primary	Sandstone
Other	Mudstone
Location
Region	Europe
Country	Scotland
Extent	Inner Hebrides
Type section
Named for	Elgol
Named by	Harris and Hudson
Location	Port Na Cullaidh
Year defined	1980
Thickness at type section	22 metres (70 ft)

The Elgol Sandstone Formation is a geological formation in Scotland, part of the Great Estuarine Group. It spans the transition between the Bajocian and Bathonian stages of the Middle Jurassic. The lithology consists of clay rich sandstone interbedded with silty fissile mudstone. ^[1]