438 



Rev. Mr. Vernon on the Strata 



[June, 



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A similar belemnite was shown us from the 

 clay at Brantinghara, and we had heard of 

 a similar oyster procured near Welton ; at 

 AVelton we saw a large ammonite which 

 had been found in a nodule in the same 

 bed. 



The similarity of appearances at Ellough- 

 ton dale and Specton would lead to the 

 supposition that the clay at those places 

 belongs to one stratum ; Mr. Phillips has 

 found the Ostrea deltoidea also at Kirby 

 Moorside, and it is probable that the whole 

 substratum of the Vale of Pickering con- 

 sists of the same clay. Its unconformity 

 with the chalk, its position, as it should 

 seem, above the coral rag, and the disco- 

 very of the Ostrea deltoidea, decide us to 

 consider it as the Kimmeridge clay, over- 

 lying in the district which we are now 

 describing, the coral rag, calcareous grit, 

 and Oxford clay, which reappear to the 

 northward. 



Between the Kimmeridge clay and the 

 soft aluminous chalk which forms the base 

 of the Wolds, and which we consider as 

 the chalk marie of Webster and Smith, no 

 indications appear of any of the beds which 

 intervene further south, except of the gault 

 or Folkstone clay ; the small transparent 

 belemnite described by Lister seems to 

 mark the red chalk marie as the represen- 

 tative of this bed. 



Upon the whole then a section of the 

 district which we have examined would 

 probably exhibit a series of beds such as is 

 described in the sketch accompanying this 

 paper. 



It only remains to add, that on our return 

 we met with the red marie again a mile to 

 the west of Shipton, and that at Holme, we 

 observed the gravel to consist of the same 

 fragments of sandstone and grit, mountain 

 lime and slate, as in other parts of the Vale 

 of York, but that at every point where we 

 met with gravel near the chalk hills, it 

 consisted of materials brought from a very 

 short distance ; and though the soft chalk 

 pebbles were rounded, the gryphites and 



