ALU3I SHALE. 145 



further on, at Kettleness point, a similar break is perceived. It has 

 only affected one of the cross veins, but the subsidence has been 

 greater than at the former slip, the difference of level between the 

 corresponding beds on the opposite sides of the fracture being nearly 

 six feet. The redness of the ironstone bands makes this break very 

 conspicuous. 



Such breaks, however, are scarcely worthy of notice, Avhen 

 compared with the enormous dislocations of the strata observed in 

 other parts of the alum hills. Of these the largest is that of Peak, a 

 view of which is given in the Frontispiece to this Work. The vievv^ is 

 taken from one of the outermost ledges of the broken rocks, lying 

 off the north-east point of the promontory. To the left, that is, to the 

 south, is seen, at the distance of about a mile, the point where the 

 alum schist, covered with the dogger, first rises from the sea. The 

 gradual ascent of the schist and its covering is partly concealed in a 

 recess on the shore, so that their progress is not observed from that 

 point of view, till they have acquired a considerable elevation. They 

 are seen forming a prominent feature in the cliff on the left hand, with 

 sloping banks of rubbish at their base, and above them an extensive 

 slope of sandy and coaly schistus, rising to a great height, and sui^ 

 mounted by massive beds of sandstone, which are the highest rocks 

 at the Peak. The whole of these strata advance northward without 

 interruption, till they pass the summit of the Peak, immediately be- 

 yond which, we find the upper strata discontinued, and a huge mass 

 of sandstone strata, apparently brought down from the strata at the 

 top, may be seen near the middle of the cliff, on a level with the 

 dogger beds and the lower part of the sandy shale. Adjoining to 

 this sandstone mass on the north, and directly over the three female 

 figures, we come to strata of a very different description, forming a 

 .steep cliff, descending suddenly to the sea. At the top of this cliff, 

 which has a triangular summit when viewed from the sea, there is a 



2 o 



