Fig. 437. — Same as Fig. 436, after (1) displacement by a strike fault and (2) base- 

 leveling. The outcrops of certain beds are repeated. 



Fig. 438. — Diagram illustrating how a strike fault in such a structure as that shown 

 in Fig. 436 may cause the outcrop of certain beds to disappear. 



Fig. 439. — Diagram illustrating how a dip fault in the structure shown in Fig,, 436 

 affects the outcrop when the downthrow was on the farther side of the fault-plane. 



Fig. 440. — Same as Fig. 430, except that the downthrow was on the opposite side. 



Fig. 441, — Oblique fault in the structure shown in Fig. 436, The downthrow was 

 on the left side. The outcrop of layer H is offset with overlap. 



