BULL. GEOL. SOC. AM. 



VOL. 25, 1913, PL. 4 



PHOTO. BY D. D CAIRNES 

 CANADIAN GEOLOGICAL SURVEY 



Figure 1. — Looking down Poucupixe River fro.m IxternatioxxVl Boundary Line 

 All the I'ock exposures in the ramparts here belong to the Tindir group 



PHOTO. BY D.D CAIRNES 

 ANADIAN GEOLOGICAL SURVEY 



Figure 2. — Looking down Darcy Creek toward Porcupine Kivku 



All rock outcrops in this view belong to Tindir group 



TINDIR SECTIONS IN VICINITY OF PORCUPINE RIVER 



