BULL. GEOL. SOC. AM. 



VOL. 20, 1908, PL. 16 



Figure 1. — The Cox gravel Pit at Missouri Valley,, Iowa 

 Showing (A) Aftonian gravels overlain by (K) Kansan drift 



i <■■'.• 



I-'** tfifotami'r 





&. 



XV- 





Figure 2. — The Peyton gravel Pit near Pisgah, Iowa 

 Showing (A) and (K) in the same relations as in figure 1 



THE COX AND PEYTON GRAVEL PITS 



