366 UROOM : EFFECT OF FAULTS ON CHARACTER OF SEASHORE. 
from Morte Point to Land's End, being the reverse of that required 
by this hypothesis. 
The occurrence of series of faults intersecting one another at 
right angles is a common phenomenon, and has been particularly 
pointed out by De la Beche* in S.W. England. One series of faults 
in these cases is usually approximately parallel to the strike, and the 
other to the dip of the beds. Such is generally the case in Cornwall 
and South Devon, as may be seen from the maps and description of 
De la Beche and Asher. The normal strike of the beds in these 
regions is approximately E. and W., but in the neighbourhood of the 
granite it becomes modified, and the faults, mineral veins, and elvans 
show in many places a deflection more or less parallel to the general 
trend of the granite masses ; the fissures, however, preserve their 
relations to the strike and dip of the beds. We cannot, accordingly, 
explain the N.E. and N.W. direction of the main faults near Westward 
Ho, as a deflection of the fault corresponding to the N. and W. faults 
of other parts of Devonshire and of Cornwall, since the former cross 
the strike obliquely ; moreover, the latter series is represented in the 
district, as seen abovef, though only to a small extent. The cause of 
this direction does not seem to be perfectly clear, and may have 
relation to the direction of the high ground and granite bosses, or be 
due to merely local conditions, such (as Mr. Ussber suggests to me) 
as the local development of grits in the Culm Measures of the region. 
In conclusion we may say. firstly, that everything points to the 
view that the present configuration of the shore in this region is due 
solely to denudation acting on a tilted and faulted series of rocks of 
varying hardness ; and secondly, that a fjord-like structure may be 
produced on a small scale by marine denudation acting along a series 
of faults and fissures. 
Explanation of Figures. 
Fig. 1. Portion of the sea coast between tide-marks about a 
mile to the S.W. of Westward Ho, showing the channels which have 
been excavated along lines of faulting. The faults themselves are 
* Report on the Geology of Cornwall, Devon, and West Somerset, 1839. 
f De la Beche describes a well-marked N-S. fault at Cornborough, which 
lies one-third of a mile to the E. of the area shown in fig. 1. 
