SECTION FROM LONDON TO THE ISLE OF WIGHT. 71 



3 q 



\ * 



sand strata. In all transverse sec- 

 tions of the district, i. e. from north 

 to south — whether on the coast, or 

 | inland — the strata on the north of the 

 | | central line dip northward, or rather 

 £ 1 to the north-east, and those on the 



o 



* south to the south-west. There are, of 

 a course, many local variations in the 



* inclination of the rocks, and nu- 

 h merous lesser anticlinal axes, or 

 S saddles, as they are provincially 

 £ termed, and also longitudinal ridges 



and corresponding valleys, running 

 parallel with the principal line of the 

 disturbing force. 



In consequence of this displace- 

 ment of the strata, a section drawn 

 from London through the North 

 Downs, across the Wealden district, 

 through the South Downs, and car- 

 ried on to the southern coast of the 

 Isle of Wight, would present the 

 arrangement shown in Ugn. 1. 



In this lignograph are represented 

 the tertiary of the London basin 

 resting on the chalk ; the chalk of the 

 North Downs, dipping northwards • 



