374 Mr. Horner o« the Geology of the 



I observed the red rock in the bottom of another valley between 

 two ridges of lyas, in the road from Benhole farm to Shurton, 

 and here the grey indurated beds contained blue carbonate of 

 copper. As might be expected from the disturbed state of the 

 stratification on the coast, the lyas strata inland rise into ridges ; 

 the longitudinal bearing of these is generally from east to west : 

 in the vallies between them patches of red soil often appear, which 

 are no doubt owing to the red rock being subjacent. 



§ 42. The northern termination of the Quantock hills de- 

 scends with so rapid a slope to the sea that I expected to find a 

 section of the grauwacke series exposed in the cliff on the shore, 

 which in this place is above a hundred feet high : there is not 

 however the slightest appearance of them, the whole cliff being 

 composed of the red rock. Where the lyas and the red rock meet, 

 the stratification of both is, in general, much confused, although 

 at a short distance from the junction they are seen in conformable 

 stratification. There are some very distinct instances of regular 

 strata of lyas lying upon regular strata of the red rock, but in all 

 those cases where, if the strata were continued without interruption, 

 the lyas would lie under the red rock, there is always so much dis- 

 turbance at the junction as to render it very doubtful whether the 

 lyas strata are not turned up or abut against it. The strata of red 

 rock near the junction with the lyas in this part of the cliff are 

 nearly horizontal or dip to the north at a very small angle, but in 

 the western part of the bay they dip south-west, and are covered 

 by conformable strata of lyas ; and in this place the grey beds of 

 the red rock are more numerous than in the eastern part of the 

 bay. The lyas strata continue to that part of the coast where 

 Donniford brook falls info the sea. Here there is a kind of delta,' 

 formed of a great accumulation of gravel, consisting of pebbles of 



