62 
DESCRIPTION OF THE COAST. 
Feet. 
60 q, r, s. Mostly sandstone beds, forming a rock about sixty feet thick, 
which may be traced without interruption from Haiburn 
Wyke to the summit of the cliff at the Peak ; and from 
that point it appears on many of the cliffs to the north- 
ward, and constitutes what is called the “ cap rock” of 
the alum shale. 
The series below, to the lias, varies much in the arrangement of the 
beds of sandstone and shale, and still more in their aggregate thickness. 
Feet. 
200 A series of shales and sandstones in very frequent alternations, the former pre- 
dominating so as to cause the cliff to waste, and generally to slope from the cap 
rock above to the sandstone series beneath : in a part of this series at Haiburn 
Wyke lie fossil plants resembling cycadeae, ferns, equiseta, &c. 
60 Grit rocks and thin shales in irregular succession, and of various thicknesses. 
They generally appear thus : 
20 feet of grit of a white colour. 
6 to 10 feet of shale. 
20 feet of grit, at its bottom is ironstone, containing various plants, as 
cycadiform fronds and ferns. 
10 feet of irony and carbonaceous shale. 
Conchiferous ( dogger ) series, analogous to the inferior oolite of Bath. This is best 
exposed at Blue Wick, and contains the following beds, in the same downward order. 
(See the enlarged section.) 
Feet. 
.30 Fine-grained, yellow micaceous, irony sandstone, in large blocks variously bedded 
and jointed; containing several layers of pebbles and shells: (represented in 
the enlarged section by dotted lines :) the upper one very ochraceous and full 
of many shells, as turritella muricata, and t. cingenda, actseon, trigonia, astarte, 
&c. The top is very irony, but without shells. A parting of shale, ironstone, &c. 
20 Fine-grained, yellow, micaceous sandstone, in blocks of various forms, with nests or 
irony masses of serpulae, lingulae, &c. represented by dotted lines. 
