EXPLANATION OF PLATE 45 



Fig. 1. A view of the Marysville Buttes from Sutter City looking north- 

 west. This picture shows the buttes rising above the level floor of the Sacra- 

 mento Valley. South Butte is the highest peak on the extreme left. 



Fig. 2. A near view of South Butte taken from the divide on the road 

 between Sutter City and the town of West Butte. The rounded hills in the 

 foreground have been formed from the soft tuffs of the Sutter formation. 



[522J 



