66 
SCENERY OF SWITZERLAND. 
the Niremont and 
is evident, not only 
(1 
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d jjj 
p SI 
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p 'I 
3 !',! 
the valley of the Sarine, where it 
that the strata have been cut off, 
but that what is now the top of 
the mountain was once the 
bottom of a valley. 
The edges of strata which 
U appear at the surface of the 
ground are termed their “Out- 
crop.” Sometimes they are 
horizontal, but if not; the in- 
clination is termed their “Dip” 
(Fig. 8, B). A horizontal line 
drawn at a right angle to the 
Dip is called the “Strike” (Fig. 
8, A ) of the rocks. If the sur- 
face of the ground is level this 
will coincide with the outcrop. 
In a mountainous district such 
as Switzerland this is however 
rarely the case. 
Where strata have been 
bent, as in Fig. g, it is called 
a monoclinal fold. Where the 
subterranean forces have rup- 
tured the strata and pushed the 
one side of the crack more or 
!53 
