78 DESCRIPTION OF THE COAST. 



calcareous grit. (See pp. 78, 79, for a statement of the complete series.) 

 The remainder of the oolite and the upper calcareous grit above it, 

 which occur in situ a few miles inland, had been removed before the 

 diluvial matter was laid upon the wasted surface of the present rocks. 



In the enlarged section of these appearances, it will be seen that the 

 diluvium rests on rubbly oolite, five feet in thickness ; beneath are two 

 beds of solid oolitic limestone, (occasionally separated by two feet of a soft, 

 yellow, calcareous grit,) which contain clypei, lutrarise, trigonia costata 

 and clavellata, pecten viminalis, pecten vagans, gryphasa?, melanin, &c. 

 This limestone which belongs to the upper oolite rests upon the calca- 

 reous grit, of which beds to the thickness of sixty feet rise from the sea, 

 within the distance of a quarter of a mile. In the upper part of the 

 rock, lie a few alternations of limestone ; and both these and the grit 

 beds contain most of the fossils which occur in the oolitic layers above, 

 excepting perhaps the echinida. The surfaces of the beds of calcareous 

 grit are singularly characterised by ramified masses of doubtful origin, 

 which appear like dichotomous cylindrical sponges. Below twenty- 

 five feet of this rock lie nine feet of soft, yellow, sandy stone, containing 

 large spheroidal, highly-indurated, calcareo-siliceous balls. This band of 

 soft sand and hard balls may be traced for a great distance, along the 

 perpendicular rocks which rise from Filey brig, under a cover of diluvial 

 clay and pebbles, to the summit of Gristhorpe cliff. Under them runs 

 a considerable thickness of cale grit beds, which above are hard, rough, 

 and cherty, but beneath become soft, gray, and argillaceous, indicating 

 the change to the Oxford clay. About three quarters of a mile from 

 Filey brig, the Oxford clay appears, and soon afterwards the sandy and 

 irony Kelloways rock, and the argillo-calcareous cornbrash beds rise 

 into the cliff. Gristhorpe cliff, two hundred and eighty feet above high- 

 water, presents the following section : 



feet. 



Diluvial clay and pebbles 8 



Lower part of the calcareous grit 30 



Gradations between calcareous grit and Oxford clay ... 40 



