Barton Group

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Barton Group
Stratigraphic range: Lutetian - Priabonian

Friar's Cliff, cliffs - geograph.org.uk - 1210129.jpg

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 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.

Hampshire Basin

The Hampshire Basin is a geological basin of Palaeogene age in southern England, underlying parts of Hampshire, the Isle of Wight, Dorset, and Sussex. Like the London Basin to the northeast, it is filled with sands and clays of Paleocene and younger ages and it is surrounded by a broken rim of chalk hills of Cretaceous age.

Southern England Place in England

Southern England, or the South of England, also known as the South, refers roughly to the southern counties of England. The extent of this area can take a number of different interpretations depending on the context, including geographical, cultural, political and economic.

The Lutetian is, in the geologic timescale, a stage or age in the Eocene. It spans the time between 47.8 and41.2 Ma. The Lutetian is preceded by the Ypresian and is followed by the Bartonian. Together with the Bartonian it is sometimes referred to as the Middle Eocene subepoch.

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

The Bartonian is, in the ICS's geologic time scale, a stage or age in the middle Eocene epoch or series. The Bartonian age spans the time between 41.2 and37.8 Ma. It is preceded by the Lutetian and is followed by the Priabonian age.

A geologic age is a subdivision of geologic time that divides an epoch into smaller parts. A succession of rock strata laid down in a single age on the geologic timescale is a stage.

In geochronology, an epoch is a subdivision of the geologic timescale that is longer than an age but shorter than a period. The current epoch is the Holocene Epoch of the Quaternary Period. Rock layers deposited during an epoch are called a series. Series are subdivisions of the stratigraphic column that, like epochs, are subdivisions of the geologic timescale. Like other geochronological divisions, epochs are normally separated by significant changes in the rock layers to which they correspond.

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Colwell Bay


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Barton on Sea coastal village in Hampshire, England

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References

  1. "Barton Group". The BGS Lexicon of Named Rock Units. British Geological Survey. Retrieved 25 March 2015.