About: Bagshot Formation

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In geology, the Bagshot Beds are a series of sands and clays of shallow-water origin, some being fresh-water, some marine. They belong to the upper Eocene formation of the London and Hampshire basins, in England and derive their name from Bagshot Heath in Surrey. They are also well developed in Hampshire, Berkshire and the Isle of Wight. The following divisions are generally accepted: * Upper Bagshot Beds — Barton sand and Barton clay. * Middle Bagshot Beds — Bracklesham Beds. * Lower Bagshot Beds — and .

Attributes	Values
rdf:type	television show
rdfs:label	Bagshot Formation (en)
rdfs:comment	In geology, the Bagshot Beds are a series of sands and clays of shallow-water origin, some being fresh-water, some marine. They belong to the upper Eocene formation of the London and Hampshire basins, in England and derive their name from Bagshot Heath in Surrey. They are also well developed in Hampshire, Berkshire and the Isle of Wight. The following divisions are generally accepted: * Upper Bagshot Beds — Barton sand and Barton clay. * Middle Bagshot Beds — Bracklesham Beds. * Lower Bagshot Beds — and . (en)
name	Bagshot Formation (en)
dcterms:subject	Paleogene England Geologic formations of England Geography of Surrey Ypresian Stage
Wikipage page ID	2928999 (xsd:integer)
Wikipage revision ID	1094199843 (xsd:integer)
Link from a Wikipage to another Wikipage	Paleogene England Bracklesham Beds Basingstoke Berkshire Billericay Bournemouth Brentwood, Essex Aralia Bagshot, Surrey London Clay Formation dbr:Windlesham_Formation Corfe Castle (village) Geological formation Clay England Eocene Geology Bracklesham Group Lignite London clay Caesalpinia Studland Ypresian Hampshire Basin Agglestone Rock Wareham, Dorset Weybridge Loam London Basin Aldershot Geologic formations of England Essex Eucalyptus Europe Flint Barton Beds Osmunda Gravel Hampshire Hampstead Harrow, London High Beach Highgate Isle of Wight Geography of Surrey Ypresian Stage Dorset Platanus Poole Populus Pipeclay Ramsdell Sequoioideae Woking Sand Sandstone Silt Polypodium Sarsen dbr:Alum_Bay_Beds dbr:Bournemouth_Beds dbr:Creechbarrow dbr:Greywether dbr:Nipadites
sameAs	Bagshot Formation Bagshot Formation Bagshot Formation Bagshot Formation
subunits	Swinley Clay Member (en)
underlies	dbr:Windlesham_Formation
unitof	Bracklesham Group
dbp:wikiPageUsesTemplate	dbt:EB1911_article_with_no_significant_updates dbt:Infobox_rockunit dbt:Convert dbt:Flag dbt:Reflist dbt:Use_dmy_dates dbt:Fossilrange dbt:Update-EB
period	Ypresian (en)
region	Europe
Thickness	up to (en)
type	Geological formation
has abstract	In geology, the Bagshot Beds are a series of sands and clays of shallow-water origin, some being fresh-water, some marine. They belong to the upper Eocene formation of the London and Hampshire basins, in England and derive their name from Bagshot Heath in Surrey. They are also well developed in Hampshire, Berkshire and the Isle of Wight. The following divisions are generally accepted: * Upper Bagshot Beds — Barton sand and Barton clay. * Middle Bagshot Beds — Bracklesham Beds. * Lower Bagshot Beds — and . The lower division consists of pale-yellow, current-bedded sand and loam, with layers of pipeclay and occasional beds of flint pebbles. In the London basin, wherever the junction of the Bagshot beds with the London clay is exposed, it is clear that no sharp line can be drawn between these formations. The Lower Bagshot Beds may be observed at Brentwood, Billericay and High Beach in Essex; outliers, capping hills of London clay, occur at Hampstead, Highgate and Harrow. In Surrey, considerable tracts of London clay are covered by heath-bearing Lower Bagshot Beds, as at Weybridge, Aldershot, Woking etc. The Ramsdell clay, N.W. of Basingstoke, belongs to this formation. In the Isle of Wight, the lower division is well exposed at Alum Bay (200 m.) and White Cliff Bay (140 ft.). Here it consists of unfossiliferous sands (white, yellow, brown, crimson and every intermediate shade) and clays with layers of lignite and ferruginous sandstone. Similar beds are visible at Bournemouth and in the neighborhood of Poole, Wareham, Corfe Castle and Studland. The leaf-bearing clays of Alum Bay and Bournemouth are well known and have yielded a large and interesting series of plant remains, including Eucalyptus, Caesalpinia, Populus, Platanus, Sequoia, Aralia, Polypodium, Osmunda, and many others. The clays of this formation are of great value for pottery manufacture; they are extensively mined near Wareham and Corfe, whence they are shipped from Poole and are consequently known as 'Poole clays'. Alum was formerly obtained from the clays of Alum Bay; and the lignites have been used as fuel near Corfe and at Bovey. The Bracklesham Beds are sometimes classed with the overlying Barton clay as Middle Bagshot. In the London basin the Barton Beds are unknown. In Surrey and Berkshire, the Bracklesham Beds are from 20 to 50 ft. thick; in Alum Bay they are 100 ft., with beds of lignite in the lower portion; and about here they are sharply marked off from the Barton clay by a bed of conglomerate formed of flint pebbles. The Upper Bagshot Beds, Barton sand and Barton clay, are from 140 to 200 ft. thick in the Isle of Wight. The Agglestone (or Haggerstone) rock and Puckstone rock, near Studland in Dorset are formed of large indurated masses of the Lower Bagshot beds that have resisted the weather; near Corfe is another striking feature due to the same beds. Many of the sarsen stones or of S.E. England have been derived from Bagshot strata. (en)
extent	London Basin
location ts	Heathland, near Bagshot (en)
namedfor	Bagshot (en)
otherlithology	Clay Gravel Silt

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