M DESCRIPTION OF THE STRATA. 



be seen at Cayton point, and other nabs to the south of Scarborough; 

 and still more on the north, between Peaseholm beck and Cloughton 

 wyke. 



These successive elevations and depressions are also attended 

 ■s\ itli another phenomenon, — the freqiient derangement of the strata, 

 particularly towards the bottoms of the recesses on the shore. There 

 the upper strata, as well as the lower, are often deranged; nay, in 

 several instances the upper beds are wholly interrupted or broken off. 

 This is the case at Cayton mill, and still more at Scarborough sands ; 

 as also at Peaseholm beck, Scalby mill, and other places to the north 

 of the town; where the alluvium comes down to the beach. 



From these facts, and the general appearance of this part of the 

 shore, we may presvune, that not only the strata which have slipped 

 down between Cayton mill and Scarborough, but the other rocks 

 along- a great part of the coast, have at some distant era occupied a 

 much more elevated place, from whence they have sunk down to their 

 present broken, undulating, and irregular position. This idea is cor- 

 roborated, by the low and compressed state of the strata at Scarbo- 

 rough castle, compared with that of the corresponding strata of 

 Oliver's Mount and Seamer moor ; and by the irregular dip of the 

 strata along this shore, which is far from being conformable to that 

 of the strata in the inland hills. 



It has been intimated, that the ironstone and sandstone beds, are 

 not only subject to undulations, in their progress northward, but to 

 various other changes. Even at Cayton point, there is a perceptible 

 change, both in the number and qualities of the beds; and it is much 

 more perceptible at the White Nab. Here, however, we still find 

 four beds of ironstone, interstratified with several beds of sandstone. 

 The beds in general appear to be harder than on the Gristhorp shore, 

 and rather more calcareous, containing a greater number of petrified 

 sliells. A thick compact bed, apparently corresponding with No. 19 



