CHAP. XII. 



OF NORFOLK CLIFFS. 



221 



feet in perpendicular height. This appearance of concentric 

 arrangement around a nucleus is, nevertheless, delusive, being 

 produced by the intersection of beds bent into a convex 

 shape; and that which seems the nucleus being, in fact, the 

 innermost bed of the series, which has become partially visible 

 by the removal of the protuberant portions of the outer 

 layers. 



To the north of Cromer are other fine illustrations of con- 

 torted drift reposing on a floor of chalk horizontally stratified 

 and having a level surface. These phenomena, in themselves 

 suftieiently difficult of explanation, are rendered still more 

 anomalous by the occasional enclosure in the drift of huge 

 fragments of chalk many yards in diameter. One striking 

 instance occurs west of Sherringham, where an enormous 

 pinnacle of chalk, between seventy and eighty feet in height, 

 is flanked on both sides by vertical layers of loam, clay, and 

 gravel (fig. 32). 



FiR. 32. 



Till 



Included pinnacle of chalk at Old Hythe point, west of Sherringham. 



d Chalk with regular layers of chalk flints. 



c Layer called "the pan," of chalk, flints, and marine shells of recent 

 species, cemented by oxide of iron. 



This chalky fragment is only one of many detached masses 

 which have been included in the drift and forced along with 



