GEOLOGIC MAPS AND NOTES ALONG HIGHWAY 49 BOWEN AND CRIPPEN 



69 



to Gross Valley 



Andesite breccia and conglom- 

 erate, includes basalt and 

 Table Mtn laiite 



Rhyolite tuff and ash 



Old nver deposits Chiefly 

 Eocene quartz grovels, 

 gold-beonng 



Granitic rocks- granite 

 to diorite 



Ultra-basic rocks- 

 chiefly serpentine 



Porphyntic rocKs quartz 

 and hornblende porphyries 



Meta-sediments. Chiefly 

 Manposa formation - slate, 

 graywacke, etc. 



Meta-volconics Chiefly Log 



town Ridge meto-andesite 



Milton Formation, tuff, red 



slate, quortzite, limestone, 

 and conglomerate 



, 2 ,'oo' \\\\\\\\\\ 

 '. '. '. '.'. *.grd'. . *. *. '. 



Colaveros formation mica- 

 schist, phylhte. quartzite, 

 clay slate, orgillite, etc. 



MAP 7 

 PLACERVILLE-AUBURN 



Calaveros limestone 



to Diamond Spr/'ngt 



