DAKYNS : GLACIAL DEPOSITS. 
249 
Boulder Clay, unconformable, 
on Angular Chalky Gravel, unconformable, 
on Fine Chalky GravcL As shewn in Fig. 5. 
The bed C, continues nearly as far as the second fence, where 
it dies out. The bed A, has a patch of red boulder clay over it near 
the end of the Dike ; a bed of gravel continuous with A, stretches 
from the Dike to Beacon Hill ; at Hartingdale Gutter, between the 
Dike and Beacon Hill, this gravel is well seen ; it is here very 
chalky : this fact implying a total change of character, causes one 
to suspect that the Hartingdale gravel may be a newer gravel, 
deposited in a hollow scooped out of A, which it replaces ; but 
though I carefully searched the cliff I could find no section shew- 
ing that this was the case. 
As one ascends the slope of Beacon Hill an earthy boulder 
clay comes on over the gravel A ; this boulder clay is succeeded 
eastward by a great thickness of well-bedded sand and gravel, 
containing fragments of marine shells, which formes the whole 
thickness of Beacon Hill above the purple boulder clay, but there 
was no section sufficiently clear to show the relation of the upper 
earthy boulder clay to the sands : on the other or eastern slope of 
the hill however a similar boulder clay is seen to lie across the de- 
nuded edges of the sand beds, as shown in Fig. 6. 
Thence to Flamborough South Landing, the top of the cliff is 
formed of Boulder clay. Near the fence next to the landing, sand 
and gravel come in between the boulder clay and the chalk. At 
the South Landing such beds fill up a preglacial chalk valley ; they 
consist of chalk gravel, and conglomerate ; some of it very course, 
highly cross-bedded ; and in one part, unfortunately quite inaccess- 
able, apparently consisting of angular blocks. The coarse chalky 
gravel contains a few foreigners : the dip of the cross-bedding is 
towards the west. 
The bedded gravel consists of water- worn stones and has evi- 
dently been tipped over the east side of the old valley. The angu- 
lar portion is unbedded and moraine like in its character ; but its 
relation to the other beds is not clear. The bedded gravel is over- 
