289 
extend eastward to Harewood, and a little further, in the same 
direction, at East Keswick and Bardsey, the Grit E/Ocks dip 
under the Escarpment of the Permian Limestone. North- 
wards they have been denuded into a broad valley, along 
which the river Wharfe has its course. On the opposite side 
of the valley the Third Grits are again in force at Kirkby- 
Overblow, Spofforth, and Plumpton. Again they disappear 
beneath the Permian Limestone, dipping south-east, and 
giving place to the Kinder Grits and Shales of Starbeck and 
Bilton Park. Beyond this point they re-expand into 
broad heathery moorlands, deeply carved by the channels of 
the river Nidd and its tributaries. From Hampsthwaite to 
Brimham Rocks, Grantley and Kirkby-Malzeard, and thence 
eastwards, they may be seen at Fountains Hall, Markington, 
South Stainley, and Knaresborough, at the latter places 
laying unconformably to and disappearing beneath the 
Permian Limestone ; the junction of the two series of rocks, 
however, is much obscured by deposits of drift in the 
more northern part. 
The Third Grits form a considerably more varied series 
than those above or below. They arc perhaps as well 
developed in the country between Harrogate and Ripon as 
anywhere, and the following section from this district may 
be taken as a type : — 
Ff. 
1. Plumpton Grit . . . . . . . . . . 150 
2. Shale . . , . . . . . . . . . 50 
3. FoEifoot Rock .. .. .. ,. ..75 
4. Arenaceous Shales and Flagstones with Worm-Tracks. . 60 
6. Cay ton Gill Beds 
a. Thin Flags, with Encrinites. 
h. Calcareous Sandstone with Brachiopods. 
c. Hard Sandstone with Bellerophon. 
G. Shales .. .. .. .. .. ..60 
7. Follifoot Coal Grit with Shales and Coal . . . . 200 
8. Shales ... .. .. .. .. ..400 
Kinderscout Grit. 
