BULL. GEOL. SOC. AM. 



VOL. 27, 1915, PL. 27 



Figure 1. — Thin-bedded Limestone and Shale at Forks of Rock Creek 

 The apparent monoclinal dip is possibly close folding as in Figure 2. Photograph by F. n. Moffit 





Figure 2. — Thin-bedded Limestone and Shale on y, - est side of Rock Creek 

 Photograph by J. B. Mertie, Jr. 



UPPER TRIASSIC ROCKS, KOTSINA VALLEY, ALASKA 



