134 Adventures in Scenery 



Hills, the Wheeler Ridge, and the Tejon Hills. Sometimes the 

 disturbance resulted in the faulting or breaking of the rocks, 

 blocks being elevated or depressed, deeper and older formations 

 being uplifted alongside of younger strata, or younger strata 

 depressed alongside of older. This faulting or breaking of the 

 formations and their displacement has resulted in oil from 



Courtesy Fresno County Chamber of Commerce 

 FIG. 39. Raisin drying in Great Central Valley, Fresno County. 



organic shales being drained from its original source and accu- 

 mulated in porous sandstone formations, and these, when 

 tapped by the drill, have furnished the oil for which many 

 fields are noted. 



Alluvial Fans furnish Artesian Conditions 



Porous sandstones which outcrop around the edges of the 

 basin absorb water from rains and melting snows. Under 

 pressure due to the greater altitude the waters descend toward 



