By Cope J.C.W., Duff K.L., Parsons C.F., Torrens H.S., Wimbledon W.A., Wright J.K.
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Extra info for A correlation of Jurassic rocks in the British Isles. Part Two: Middle and Upper Jurassic
C. The Blisworth Limestone is a fully marine horizon from which rare ammonites have been found to the south. The most northerly is an old and unconfirmed record of Ammonites macrocephalus Schlotheim from Uffington (SK0607) (see Torrens 1967, p. 79). The Kalliihynchia sharpi marker beds at the base of the formation occur at Lincoln (Torrens 1967, p. 81) and persist as far north as Spital (SK 9690) (Kent 1971, p. v). B 16. North Yorkshire Based on Black (1929). No detailed correlation with the standard is possible for the Bathonian rocks of North Yorkshire.
353), but its fauna is largely facies-controlled and unlikely to occur at a single synchronous horizon (Palmer & Fiirsich 1974; Barker 1976). Consequently, its use to separate the Forest Marble into Wychwood and Kemble Beds as formerly advocated is not accepted here. The age of the Kirtlington Mammal Bed (Freeman 1979) in the basal bed of the Forest Marble (Palmer 1974, 1979), or at the top of the White Limestone (Barker 1976, fig. 1 , 17 and p. 50) is not known with certainty. It seems likely to be of aspidoides Zone age.
The Forest Marble sequence at Cirencester is based on a horehole record (Richardson 1933, p. 75 with references). No correlation here with the standard is yet possible. c. The Whitc Limestone and lower beds of the Bathonian are known from the descriptions of the old railway cuttings hetween Chedworth and Cirencester and nearby sections described by Richardson (1911b, 1930, 1933), Arkell & Donovan (1952, p. 246 and map 5) and Callomon & Torrens (1969, pp. 12-3). The correlation of the White Limestone Formation, Beds 5-28 of Richardson 1933, p.
A correlation of Jurassic rocks in the British Isles. Part Two: Middle and Upper Jurassic by Cope J.C.W., Duff K.L., Parsons C.F., Torrens H.S., Wimbledon W.A., Wright J.K.