SUGGESTIONS FOR TEACHING 



185 



Dip-slip faults alone have been considered up to this point, and it is 

 probably not desirable to go more deeply into the subject except with 

 special students in geology or mining engineering. With special stu- 



Figure 17. — Vertical Section at right Angles to Fault 



a' o' 

 a' o' 

 e'f: 

 a' k' 



= slip for dip-slip fault 



= appar. slip for oblique-slip fault 



= appar. offset 



= throw 



6' fc' = heave 



e' V = appar. strat. separ. 



o' g' = hor. separ. in this plane. 



e' c' = vert, separ. 



Figure 18. — The Slip 



dents the more complex part of the subject should be taken up as follows : 



Experience shows that movements may take place in any direction on 



a fault surface, and this leads to the definition of dip-slip, strike-slip, 



