﻿Strong continuous lines represent the 

 boundaries (whether original or due to 

 faulting) of geological formations. 



In certain of the formations the strike 

 is further indicated by finer lines. 



Fine broken lines indicate contours, 

 the heights of which are given in feet. 



AA, BB, CC, DD are the lines of the 

 sections reproduced in Plates XV and 

 XVI. 



