STAITHES. 
71 
turn, pectines, and dentalia ; and at the bottom the deeper lias shale, 
with a few layers of ironstone nodules. The extent of this disloca- 
tion is obviously something greater than the whole height of Colborn 
nab ; for all the strata which it exhibits are naturally placed below the 
lowest of those in the signal cliff ; they are therefore elevated about 
one hundred and fifty feet higher on the west than on the east side of 
the harbour. 
This being a place where the ironstone and marlstone series is seen 
to great advantage, I have drawn an enlarged section of the opposite 
cliffs, which should be connected with the following reference : 
x. Diluvial clay and pebbles lying on the top of the cliffs, on both sides of the 
harbour. 
In the cliff on the east side occur the following beds : 
a. Hard shale, irony and rugged, with great balls of ironstone. 
b. Soft shale, with a remarkable sulphureous line in it. 
c. Ironstone series ; consisting of layers of ironstone nodules alternating with shale. 
Pectines, terebratulse, belemnites, and wood, are abundant in this group. 
Colborn nab cliff, on the west side of the harbour, contains strata 
which in other places on the coast are seen to lie beneath a, b, c, though 
in consequence of the great dislocation they here front them on a level. 
d. Alternations of shale, and thin, soft, sandy beds. 
e. Alternations, mostly consisting of sandstone. 
f. Sandstone and shale, with numerous fossils. 
g. The lower alum shale, with layers of ironstone. 
The dislocation at Staithes is the last which I shall have occasion to 
notice. For though the declination of the strata in the lofty cliffs 
beyond is variable and subject to flexures, there is no fault or break 
whatever. Another general fact is, that the deeper shale, which shewed 
itself at the foot of Colborn nab, is uniformly found in the lowest parts 
of the cliff, from that point to Saltburn. It rises from Colborn nab 
towards the precipices of Boulby, and there attains an elevation of about 
