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GEOLOGIC GUIDEBOOK ALONG HIGHWAY 49 



[Bull. 141 



FIG. 30. View southwest down the North Fork of the 

 Yulia River in the vicinity of Indian Valley Camp in Sierra 

 County. 



FIG. 31. Potholed granodiorite bedrock along the 

 South Fork of Yuba River close to the Highway 49 bridge, 

 Nevada County. 



FIG. 32. Springs and waterfalls emerging from glacio- 

 fluvial deposits along Sardine Creek, Sierra County. The 

 falls are close beside Highway 4!). 



