CHAP, x TK PS tyt 



The beds on the up throw tide, on the other hand, may 

 sometimes be observed to be bent down against a fault. 

 This arrangement is of course what might have been 

 looked for, hut it does not always on 



Another feat h, where no unconformability is 



to be suspected, may be regarded as a tolerably sound 

 proof of the existence of a (mult, romittf in a complete 

 divergence of strike between the formations on either 

 side of a given line, or, in the common parlance of 

 geologists, when one series of strata strikes at or against 

 another. This may be most easily understood by 

 reference to the diagram (Figs. 27 and 28). Towards 

 the south-east portion of that map, two different sets of 

 strata may be observed to crop up in the various streams 

 and natural sections. The strike of one of these is at 

 D and C nearly north-west. Towards the north-east, 

 owing to a change in the direction of dip, the strike of 

 the lower parts of the series (C, B) swings round, until 

 at last md W.S.W. Now, unless some fault 



occurs, we may confidently expect that the strata which 

 strike north-west and south-east wHl be found to continue 

 southwards, though they may eventually participate in 

 some other change of strike, and wheel round as before. 

 If then in the line of th . and at a comparatively 



short distance in which they have no room to turn round, 

 we encounter, as shown here, another and different series 

 of rocks (/'and G\ we may reasonably infer that a fault 

 ones, and may set about the search for further 

 evidence of it. In the case supposed upon the map, the 

 strata on the south side strike on the whole in a north- 

 east and south-west direction. But dose examination 



