BULL. DEPT. GEOL, UNIV, CAL. 



VOL. 6, PL. 37 



A. Lower strata of fossiliferous tuff member of Rosamond Series in north limb of 

 Barstow syncline and near the west end of the exposure. Remains of horses were 

 found in considerable abundance in the lighter layers striking through the center of 

 the picture. 



B. Strata of the resistant breccia member of the Rosamond Series in the trough 

 of the Barstow syncline, looking east. Capping of later alluvium and synclinal basin 

 of erosion also shown. 



