SS rare ray 
= 
Clement Reid—Glacial Deposits of Cromer. 63 
South-east of Cromer, until the clue was obtained, I was constantly 
puzzled by finding masses that undoubtedly belonged to the Second 
Till and overlying sands, with what appeared to be evenly-bedded 
Boulder-clay like the Contorted Drift beneath them, the whole 
resting with a sharply-defined junction on the Leda Myalis Bed. 
The section taken at Sidestrand (Fig. 3) explains the difficulty, for 
there the sliding of the beds has undoubtedly caused the same 
succession to be repeated, the Second Till and Sands being shown 
twice in a vertical section without inversion. In this case the beds 
in the middle of the cliff are the most disturbed, for after sliding 
some distance along the plane A, it is evident that the line of shear 
was shifted to B, and while the lower part became stationary the 
upper part moved on, the beds sliding up the inclined plane. It is 
of course possible that the line B was the first formed, and as the ice 
thickened it planed deeper—but this would make no difference in 
the section. 
Fic. 3.—Section at right-angles to the cliff near Sidestrand Church. 
(Scale 60 feet to the inch.) 
A First line of fracture. 
B Second ,, x 
C Pre-glacial Beds. 
D D Second Till, 
E E Sands. 
F F Contorted Drift: 
The laminated Boulder-clay just mentioned should be carefully 
examined, for when this is done it is seen to have no connexion 
with the undoubtedly stratified beds between the Tills, with which 
it appears always to have been correlated. The appearance of 
bedding is very deceptive, for in this case it is nothing but the effect 
of sliding pressure on the base of the moving mass, allied, as before 
suggested, to slaty cleavage, and quite unconnected with a sedimen- 
tary origin. 
West of Cromer there is no trace of the Tills, except possibly as 
boulders in the Contorted beds. The whole of the glacial deposits 
appear to have been slid along in mass, and at the bottom of the 
moving mound a ground-moraine was formed equivalent in time to 
