242 



ROLLIN T. CHAMBERLIN 



The results are presented diagrammatically in Fig. 13, in which 

 each section has been represented as though it were an isolated 

 rectangular block, no attempt being made to accommodate these 

 blocks to one another as was done undoubtedly in the real case. 



sw 



miles 

 kilometers 



Fig. 13. — Diagrammatic cross-section of the deformed zone for this portion of 

 the Colorado Rockies. The thirteen separate blocks are numbered in order from 

 northeast to southwest. The heavy black line gives a restoration of the Laramie 

 and Mesa Verde formations and thus represents the original folded surface. The 

 depth in miles is given at the bottom of each block. No attempt is made to bound 

 the deformed zone by a curved lower surface, as was presumably the actual case in the 

 field. 



Curved boundary lines would certainly conform more closely to 

 nature, but nothing more than the strictly diagrammatic block- 

 outline is ventured here. 



Fig. 13 appears to show that beneath the two principal 

 granite ranges, which today mark the lines of greatest upfolding, 

 the disturbed zone reached deeper levels than on the immediate 



