Duren (77 
Aachen Euskirchen Q3 
   
   
  
  
  
   
   
   
    
    
  
  
NC 
obvious linears 
— — — — marginal linears 
known faults (1952) 
— — — suspected 
— mapped faults (1971) 
ve photo- ; ; : : 
fel with Fig. 3: Comparative sketch showing obvious and marginal linears 
3) in the area of the Ost Eifel mapped on LANDSAT-2 MSS 6 
image of 29.8.1975. The intensity of photolineations 
is higher than shown on Fig. 2 for both NNE-SSW and 
NW-SE trends.