226 



GEOLOGY. 



*— V" 5 



Fig. 95. — Map showing the Upper Cambrian formations. The outcrops are shown 

 in black. The continuous lines represent areas where the Upper Cambrian forma- 

 tions are confidently believed to exist, though concealed. The dashes represent 

 areas where there is some reason for believing them to exist. The dotted areas 

 represent areas from which the Upper Cambrian is believed to have been removed 

 by erosion. The unshaded areas nave the same meaning as in Fig. 90. 



