BULL. GEOL. SOC. AM. 



VOL. 29, 1917, PL. 21 



'iijiRi: 1. — Large and small Oolites and the 



DISSEMINATED SAND GRAINS. (X 25) 



h^iGURE 2. — Distribution of the sand Grains 

 AND THE Zones in the Oolites. (X 41) 



Figure 3. — Irregular Distriiutiun of the sand Grains in both Shale and Oolites 

 A is a bole in the slide, (x ST) 



OOLITES IN THE RED SHALE 



