Walmsley: Coast Changes at Robin Hood’s Bay. 281 
down the face of the cliff, and have actually covered the out- 
crop of the Lower Boulder Clay. 
In the year 1910 the heavy seas had done considerable damage 
to the cliff, and the margin was further in than it had previously 
A 
sooT) GIDANEKEES 0 STREETER, 
Fig. I. 
D 
F 
Eas 
SSSI : =e F 
A 
’ 
Page Lite 
WAIN, 6 0" 
SOY is ee 
Land under cultivation. 
A= 
B = Upper boulder clay. 
C = Middle sands, with patches of gravel, 
D = Lower boulder c'ay. 
E = Middle Lias (zone of Ammonites armatus). 
F = Beach. G = Slipped mass containing material from the three drift-beds. 
been in the memory of many of the old fishermen. A good 
section of the sub-zone of A. aymatus was exposed, and several 
specimens of this ammonite were procured. During r1gro, 
however, a large amount of the Upper Boulder Clay and the 
1913 Aug. I. 
