Stratigraphic range: Middle to Late Jurassic (Callovian-Oxfordian), 166–160 Ma
PreꞒ
Ꞓ
O
S
D
C
P
T
J
K
Pg
N
Coastal exposure of the Oxford Clay Formation near Weymouth
Type
Geological formation
Unit of
Ancholme Group
Sub-units
Peterborough Member, Stewartby Member, Weymouth Member
Underlies
West Walton Formation, Corallian Group
Overlies
Kellaways Formation, Osgodby Formation
Thickness
Up to 185 metres, typically 50 to 70 m on East Midlands Shelf
Lithology
Primary
Claystone
Other
Mudstone
Location
Region
Oxford, Peterborough, Dorset, Yorkshire
Country
England
Type section
Named for
Oxford
The Oxford Clay (or Oxford Clay Formation) is a Jurassic marine sedimentary rock formation underlying much of southeast England, from as far west as Dorset and as far north as Yorkshire. The Oxford Clay Formation dates to the Jurassic, specifically, the Callovian and Oxfordian ages,[1] and comprises two main facies. The lower facies comprises the Peterborough Member, a fossiliferous organic-rich mudstone. This facies and its rocks are commonly known as lower Oxford Clay. The upper facies comprises the middle Oxford Clay, the Stewartby Member, and the upper Oxford Clay, the Weymouth Member. The upper facies is a fossil poor assemblage of calcareous mudstones.
Oxford Clay appears at the surface around Oxford, Peterborough and Weymouth and is exposed in many quarries around these areas. The top of the Lower Oxford Clay shows a lithological change, where fissile shale changes to grey mudstone. The Middle and Upper Oxford Clays differ slightly, as they are separated by an argillaceous limestone in the South Midlands.
^"Oxford Clay Formation". The BGS Lexicon of Named Rock Units. British Geological Survey. Retrieved 21 August 2017.
The OxfordClay (or OxfordClay Formation) is a Jurassic marine sedimentary rock formation underlying much of southeast England, from as far west as Dorset...
Clay minerals are hydrous aluminium phyllosilicates (e.g. kaolin, Al2Si2O5(OH)4), sometimes with variable amounts of iron, magnesium, alkali metals, alkaline...
Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolinite, Al2Si2O5(OH)4). Most...
The Clay Mathematics Institute (CMI) is a private, non-profit foundation dedicated to increasing and disseminating mathematical knowledge. Formerly based...
that genus. These teeth had been collected by Alfred Leeds from the OxfordClay Formation, near Peterborough, England. In 1869, Harry Govier Seeley had...
"moderately-spined lizard") is a genus of metriacanthosaurid dinosaur from the upper OxfordClay of England, dating to the Late Jurassic period, about 160 million years...
boulder clays are derived from eroded schist; blue boulder clays are derived from eroded OxfordClay, dark blue or nearly black boulder clays are derived...
of England. Its remains are known from the Peterborough Member of the OxfordClay Formation, which is Callovian in age. It was originally described as...
The Clay Research Award is an annual award given by the Oxford-based Clay Mathematics Institute to mathematicians to recognize their achievements in mathematical...
Henry Clay Sr. (April 12, 1777 – June 29, 1852) was an American lawyer and statesman who represented Kentucky in both the U.S. Senate and House of Representatives...
The creation of life from clay can be seen as a miraculous birth theme that appears throughout world religions and mythologies. It can also be seen as...
Oxfordian is named after the city of Oxford in England and was named by Alcide d'Orbigny in 1844 in reference to the OxfordClay. The base of the Oxfordian lacks...
and Oxford. Its surface geology is primarily gently rolling Oxfordclay or, more formally: ... a portion of more or less dissected boulder clay plateau...
Similar septarian concretions have been found in the Kimmeridge Clay and OxfordClay of England, and at many other locations worldwide. The Moeraki Boulders...
Dinosaurs portal Wealden District London ClayOxfordClay List of dinosaur-bearing rock formations "Wealden Clay Formation". The BGS Lexicon of Named Rock...
the Trout Inn and St. John's Bridge. The low-lying land is alluvium, OxfordClay and river gravels and the town is surrounded by lakes created from disused...
The holotype specimen, BMNH P.6921, had been found in a layer of the OxfordClay Formation dating from the Callovian, about 165 million years old. It...
provenance from Oxford. The holotype, OUM J13558, was recovered by W. Parker from claystone in a marine layer of the Stewartby Member of the OxfordClay Formation...
(five kilometres) west of Sturminster Newton. The village is sited on Oxfordclay close to the small River Lydden. The parish – which includes the village...
later appointed an Honorary Fellow of the Queen's College. On leaving Oxford, Clay joined Vickers da Costa, a stockbroking firm based in the City of London...
The Vale of Pewsey has been cut through the chalk into Greensand and OxfordClay in the centre of the county. In the south west of the county is the Vale...
Airport in January 2021. A Clay Lacy Aviation FBO at Waterbury-Oxford Airport, announced in 2020, is set to open in 2024. In 1968, Clay Lacy Aviation began operations...
achieved, studies on the environment of the Peterborough member of the OxfordClay suggest that Ophthalmosaurus instead inhabited relatively shallow waters...
and 5.5 miles (8.9 km) southeast of Yeovil in Somerset. It is sited on Oxfordclay by the small Wriggle River at the western end of the Blackmore Vale....
lizard) is an extinct genus of cryptoclidid plesiosaur reptile from the OxfordClay of Southern England. The genus was given its name due to the eel-like...
Shaftesbury. It is sited on Corallian limestone soil and surrounded by OxfordClay, about 1⁄4 mile (400 metres) from the west bank of the River Stour. Its...
Global Information