Barton Group

The Barton Group is a geological group found in the Hampshire Basin of Southern England. It ranges in age from Lutetian (Lower Eocene) to Priabonian (Upper Eocene).^[1] It is exposed on the coast in southern Hampshire and in the northern part of the Isle of Wight. The type section is sea cliffs east of Christchurch, between Cliff End and Paddy's Gap.

Barton Group
Stratigraphic range: Lutetian - Priabonian
Boscombe Sand Formation near the base of the Barton Group, at Friar's Cliff near Highcliffe
Type	Group
Sub-units	Boscombe Sand Formation, Barton Clay Formation, Chama Sand Formation & Becton Sand Formation
Underlies	Solent Group
Overlies	Bracklesham Group
Thickness	~190 m
Lithology
Primary	clay
Other	sand
Location
Region	Hampshire Basin, England
Country	United Kingdom
Type section
Named for	Barton on Sea

The Barton Group corresponds with the Bartonian age, which spans the time between 41.2 and 37.8 Ma in the middle Eocene epoch.