484 
A STRIATED SURFACE AT SANDSENI). 
BY JOHN W. STATHER, F.G.S. 
{Read November \Uh, 1901.) 
Though glacial beds cover the solid rocks of the Yorkshire 
coast from Redcar to Bridlington, glaciated surfaces are rare. This 
arises from the texture and comparatively soft nature of the Jurassic 
and Cretaceous strata, of which East Yorkshire is built. Hard bands 
do, however, occur liere and there in the Oolitic beds, and in two 
localities, Filey and Robin Hood's Bay, striated surfaces have been 
observed upon them. The object of the following note is to record 
an additional locality. 
Sandsend is a small fishing village, picturesquely situated on 
the Yorkshire coast, two and a half miles north of Whitby, at the 
point where the Sandsend beck enters the sea. South of the beck, 
the high cliffs overlooking the sea are for the most part composed 
of boulder clay and gravel, and there is evidence that in the neigh- 
bourhood of Upgang the drifts fill in a pre-glacial valley, believed 
by Mr. G. Barrow to be the pre-glacial channel of the Esk. North 
of the beck the high ground consists of Jurassic rocks covered by 
drift. These beds are well exposed on the coast, and can also be seen 
in the series of old quarries connected with the abandoned Sandsend 
alum works. Throughout these old workings the " Dogger " 
Oolite (a very variable bed) overlies the alum shale, and is repre- 
sented by a conspicuous band of evenly-bedded, hard, ferruginous 
sandstone, thirty feet thick, flaggy towards the bottom, but massive 
and exceedingly hard at the top. The boulder clay which overlies 
the " Dogger " is eight feet thick, and is of the usual East Coast 
type. 
In October, 1899, the drift sections exposed along the edge 
of these old quarries were examined by the writer, and at a point 
overlooking the Deep Grove " quarry, 250 feet above ordnance 
datum, indications of a glaciated surface were seen. A few square 
