BULL. GEOL. SOC. AM. 



VOL. 27, 1915, PL. 26 



C hi ti stopgr' 1 1 ra&sto rvfc 







Figure 1. — Ciiitistoxe Limestone and Nikolai Greenstone north side Chitistone River 



Photograph by S. R. Capps 



Figure 2. — McCarthy Formation,, Nizina Limestone. Chitistone Limestone, and Nikolai 

 Greenstone on west side of Nizina River, near the Mouth of Chitistone River 



Photograph by F. H. Mo flit 

 UPPER TRIASSIC ROCKS, NIZINA VALLEY, ALASKA 



