Vol. 6] Jones: The Geology of the Sargent Oil Field. 



Well No. 2. Record by C. A. Mitchell. 

 Material 



Alluvium 



Blue sandstone „ 



Conglomerate (water) 



Blue clay 



Yellow clay and conglomerate 



Blue shale 



Oil sand (oil) 



Brown shale 



Oil sand (oil) 



Brown shale 



Well No. 4. Record by C. A. Mitchell. 



Material 



Alluvium 



Blue shale 



Blue sandstone 



Blue shale 



White shale 



Blue shale 



Blue sandstone 



Brown shale (oil and gas) 



Hard brown shale 



Blue shale 



Brown shale 



Black clay 



Brown shale 



Oil sand 



Brown shale 



Oil sand 



Brown shale 



Sandy shale 



Cement Materials. — The cement materials consist of limestone, 

 shale, and clay. There is no plant producing at present. The 

 San Juan Portland Cement Company is building- a 2000-barrel 

 plant at the town of San Juan. 



Limestones. — The limestone deposits were mentioned on page 

 58 and two analyses were given. 



Shale. — The available amounts of shale are, of course, prac- 

 tically unlimited. But most of the Monterey shale is probably 



Thickness 



Depth 



feet 



feet 



35 



35 







30 



65 



5 



70 



20 



90 



25 



115 



35 



150 



1 7 1 

 lit 



i 



o_4 



41 



oOO 



070 



uo / 



00 



t>yi ' 



4>>4 



1 1 S4 





i on i 



1-04 



14 + 



1 oi o 

 1-15 



Thickness 



Depth 



feet 



feet 



60 



60 



160 



220 



26 



246 



19 



265 



5 



270 



526 



796 



8 



804 



12 



816 



46 



862 



280 



1142 



65 



1207 



5 



1212 



38 



1250 



15 



1265 



53 



1318 



4 





32 



1352 



3 



1355 



512 



1867 



... 37 + 



1904 



