GEOLOGIC MAPS AND NOTES ALONG HIGHWAY 49 BOWEN AND CRIPPEN 



51 



Fie. 17. Hummocky limestone bedrock at Columbia. View is northeast toward 

 St. Anne's Church. More than $17,000,000 in gold was taken from this surface during 

 the '50's 





FlG. 19. Ixjoking northeast toward eroded face of old hydraulic pit at North 

 Columbia. Crossbedding can be seen in the upper left hand part of the picture. Photo by 

 Olaf P. Jenkins. 



Fio. 18. Rolling exhumed Eocene land surface as seen to the northwest of Kelsey, 



El Dorado County. 



Fio. 20. Hummocky limestone bedrock at Shaws Flat, a rich placer camp much like 

 Columbia, which lies a few miles to the northeast. 



