6 Dr. Henry Hicks—Folds and Faults in N. Devon Rocks. 
Here Bay anp HiiisBorover. 
The beds on the east side of Hele Bay from Rillage Point to Hele 
Village are, as a rule, intensely folded. The itonastome bands are 
repeated over and over again, and the underlying slates and flagey 
sandstone beds are also traceable in broken folds below them. 
There are also numerous thrust faults which aid in producing the 
frequent repetitions of the beds. A superficial appearance, owing 
to the strong cleavage planes, leads one at first to suppose that there 
is a fairly well-marked succession with a general dip to the south, 
but a closer examination shows how entirely deceptive this is. The 
more one examines the beds on this coast, the more one is constantly 
reminded of the intensely complex arrangements which have been 
produced by earth-movements. The results in inducing cleavage 
and foldings on a small scale, im some of the sediments in this area, 
have been already referred to by Dr. Sorby, F.R.S.,1and by Mr. J. EK. 
Marr, F.R.S.,? but I was entirely unprepared to find here evidences 
of such remarkably deceptive appearances in regard to the general 
succession which gradually made themselves apparent during my 
researches. iy 
On the west side of Hele Bay the beds are bodily thrown forward 
by a fault which crosses the beds more or less in the line of the 
Valley. The section on this side passing through Hillsborough is 
most instructive as illustrating mountain-making by a series of 
parallel folds aided by thrust faults, especially as the beds can be 
examined in cliff sections in Hele Bay on the one side, and also in 
the precipitous cliffs and coves on the Ilfracombe side. Extending 
across the hill from the point between Rapparee Cove and Larkstone 
Beach are fairly gentle folds of sandstone beds, but between here 
and Beacon Point the folds become steeper and steeper, and at last 
are so much crushed and broken that the limestone bands in the 
higher beds near the Point are so cleaved as to look, at a little 
distance, like slates. 
If the section is carried in a line south from Hillsborough it will 
be found that similar beds to those which form that hill are repeated 
in wider folds here and there broken across, but which on the whole 
form themselves into a fairly wide trough in which the sandstone 
beds mark the boundary on the south at a fault which separates the 
Ilfracombe beds from the Morte series. 
ILFRACOMBE. 
Lantern Hill and Capstone Hill, Figs. 4, 5, and 6, offer illustra- 
tions of fairly gentle folds broken on ‘the north or seaward side; 
the result being a precipitous face on the over fold or broken side 
and an easy slope on the side of the arch limb. These show the 
conditions to be witnessed in the majority of the Torrs which are so 
plentiful in the neighbourhood, especially those formed of the 
1 Q.J.G.S. vol. xxxv. pt. 2, p. 89. 
2 Grou. Mac. 1888, Decade III. Vol. V. p. 218. 
