IN THE ANGLO-PARIS BASIN 107 



matrix. This matrix is very similar to Bed n. Bed 12 at the base shows angular 

 pieces of clay indicating heavy erosion of previously deposited clay sediment. The 

 bed itself is sandy and contains very fragile but well preserved Inoceramus concen- 

 tricus, Anahoplites planus, A. splendens, and Dimorphoplites niobe, indicating the 

 niobe Subzone not previously recognised in the Pays de Caux. The loams of Bed 13 

 also contain /. concentricus in the lower 1 foot 3 inches (0-38 m.) but apparently no 

 ammonites. Post eodentatus Subzone Middle Albian sediments are, therefore, 

 present in this area. The Upper Albian sediments probably commence at some level 

 within Bed 13. 



(c) Octeville 



This section (text-fig. 47) also has not yielded age diagnostic Middle Albian fossils 

 to the writer. It is situated in the cliff immediately to the NE. of the cliff-top car 

 park, and again has not previously been described in detail. The lithological correla- 

 tion with the sequence at Cap de la Heve and Cauville is, however, more definite than 

 that of St. Jouin and Cauville (text-fig. 49). 



(d) Cap de la Heve 



This famous section can be seen high in the cliff on the northern side of the Cap 

 (text-fig. 48). It has been studied by a number of workers, but the best recent 

 description of the sequence is that given by Rioult (1962 ; 39-42). Cayeux (i960 ; 

 25) has recorded Goodhallites goodhalli from the base of the bed here numbered 6, and 

 Bed 4 is of mammillatum Zone age. In the Bucaille collection at Rouen, there is a 

 single example of Hoplites (H.) preserved in blackish, gritty phosphate stated to have 

 come from Cap de la Heve. The preservation is identical to fossils found occasionally 

 in Bed 5 which, therefore, probably contains eodentatus and possibly basal lyelli Sub- 

 zone fossils in remanie. 



(e) Summary, and comparison with the Isle of Wight 



The lithological correlation of the sections described above is shown in text-fig. 49. 

 It can be seen that Lower and Middle Albian sediments reach their maximum develop- 

 ment in the area of Cauville. Eodentatus Subzone sediments are present at all 

 localities with the possible exception of St. Jouin where it has not been proved. At 

 Cauville, the eodentatus Subzone is apparently less condensed, and is followed by 

 sediments of the niobe Subzone. To what extent higher Middle Albian sediments are 

 present, if at all, is unknown at this time. At Cap de la Heve it appears that Upper 

 Albian sediments rest directly upon the residue of basal dentatus Zone age. 



Even if the classification of these sections is unsatisfactory, it is immediately 

 apparent that all previous correlations of the ' Argiles du Gault ' of the Pays de Caux 

 with the Gault of the Isle of Wight are no longer tenable (p. 42). It appears that the 

 sequences in the Isle of Wight and the Pays de Caux are truly out of phase. In the 

 Isle of Wight the kitchini Subzone of the mammillatum Zone (Lower Albian) is 



