BULL. GEOL. SOC. AM. 



VOL. 18, 1906, PL. 39 



Figure 1. — Ax Exajitle from Central Asia 



Subaeiial or continental strata of the Fire mountains in the Tuyok valley of 

 Turfan, showing lenticular white layers of shale and gypsum in the midst of red 

 strata on the left, and thicker layers of white or pale green shale, alternating with 

 red, on the right above 



Figure 2. — An Example pro.m the United States 



Mesa of red and white Moencopie shales capped with Shinarump conglomerate, in 

 southern Utah. I'hotograph by W. M. Davis 



RED AND WHITE CONTINENTAL DEPOSITS 



j'fll 



