196 F. L. Kitcliin & J. Pr ingle — lite U'p'per Gault in 



leu tides have the character of a limestone-breccia, a composite 

 rock containing many fragments of pinkish limestone, often showing 

 minute, polished black grains. The closely similar rock occurring 

 at the base of the varians-y.one at Matringhem, in Northern France, 

 has yielded ammonites of the i;anaws-fauna, as communicated to one 

 of us in conversation by Dr. P. Pravost. For niany years we have 

 been struck by the lithological resemblance between the pink 

 limestone-constituents in the lenticles at Shenley Hill and the paler 

 parts of the uppermost red bed at Hunstanton, which is striking. 

 It must be noted that the specimens of Terehratula cnpillata 

 d'Archiac found in the uppermost red bed are identical with those 

 occurring in the pink limestone at Shenley Hill. This species is 

 found in the varians-zone in this country and in France. The record 

 of its occurrence in the lower red beds at Hunstanton requires to 

 be tested, while there are ample reasons for believing that the 

 similar Terehratula occurring in the Lower Greensand of Upware 

 belongs to a separate stock. It suffices for our joresent purpose to 

 point out that limestone closely akin to that found iti the upper- 

 most red bed at Hunstanton entered into the composition of the basal 

 bed of the varians-Chalk of more southerly districts. A furtlier 

 discussion of the facts and their implications would involve a some- 

 what lengthy digression and must be omitted here. 



Lincolnshire and Yorkshire. — We have as yet been unable to visit 

 more than two sections in Lincolnshire, in which county the Red 

 Rock passes transgressively across the Lower Greensand. In places 

 a sandy basement-bed has been observed, and the red colour persists 

 up through an increasing thickness of the Chalk above. Inoceramus 

 sulcatus has been found at South Willuagham. Hill recorded 

 Ammonites interruptus at Withcall, but we have already pointed 

 out that fossils so named from the Red Rock have been wrongly 

 identified. 



In Yorkshire the extension of the overlap of the " Red Chalk " 

 on to older rocks is well known. At North Ferriby we have examined 

 the relation of the transgressive beds to the substrata and find that 

 they there rest upon a clay belonging either to a basal Kimmeridge 

 or Upper Corallian zone.^ At South Cave the " Red Chalk " probably 

 lies on Corallian clay. At that locality Inoceramus sulcatus and 

 Ammonites rostratus were recorded by Hill,^ who also noted the 

 occurrence of Inoceramus sulcatus at Wharram Grange. At Market 

 Weighton, where the base of the Red Rock is markedly con- 

 glomeratic, it can be seen resting on the clays and ironstones of the 

 Lower Lias. Mr. T. Sheppard kindly drew our attention to a newly 

 made opening at the Rifle Butts in the Goodmanham Valley, and 

 accompanied one of us on a visit to this locality. It was observed 

 here that the basal transgressive bed contained constituents of 

 variable character, including much oolitic material. 



1 "Summary of Progress for 1920": Mem. Geol. Siirv., 1921, p. 63. 

 ^ W. Hill, " On the Lower Beds of the Upper Cretaceous Series in Lincoln- 

 shire and Yorkshire " : Quart. Journ. Geol. Soc, vol. xliv, 1888, p. 347. 



