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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 .
Peloneustes is known from the Peterborough Member (formerly known as the Lower Oxford Clay) of the Oxford Clay Formation. [2] While Peloneustes has been listed as coming from the Oxfordian stage (spanning from about 164 to 157 million years ago [ 1 ] ) of the Upper Jurassic, [ 7 ] the Peterborough Member actually dates to the Callovian stage ...
The cutting exposes limestone and clay laid down in mid-Oxfordian stage of the Late Jurassic, around 160 million years ago. The deposit is part of the Stanford Formation, and the clay appears to have been deposited in a channel between coral reefs which then covered the Oxford area. [150] [151] Littleworth Brick Pit: 1.5 hectares (3.7 acres ...
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It is found in the British Isles, immediately above the Great Oolite Series: below the Oxford Clay Formation and above the Cornbrash. It consists of two layers, the Kellaways Sand, a light green-grey clayish silt and sand with layers of sand concretions, overlying the Kellaways Clay, a dark grey plastic fissile clay. [1]
[7] [17] The Oxford Clay Formation is a marine deposit of southern and middle England, known for the high-quality preservation of some fossils and the large diversity of taxa. [17] Sediments are generally brownish-grey mudstone, organic-rich with plentiful crushed ammonites and bivalves, at most 65 m (213 ft) thick. [38]
One of these was a poorly preserved partial skeleton excavated from the Oxford Clay of Fletton, England, housed in Institut für Geowissenschaften, University of Tübingen. The skeleton was mounted and missing regions were restored with material from other Liopleurodon specimens.
The outcrop known as Headington stone was quarried at Headington Quarry on the outskirts of Oxford and used for many of the historic University buildings there. Hilly outcrops above this corallian ridge, composed of Lower Greensand , occur at Badbury Hill , Faringdon (Folly Hill) and Boars Hill .