76 GUIDEBOOK OF THE WESTERN UNITED STATES. 



and covered with a scanty growth of oaks. The streams flow across 

 the plateau or bench at right angles to the trend of the bluff that 

 separates it from the present flood plaiii of the river and have cut 

 through the alluvium into Cretaceous sandstone and shales that 

 dip toward the valley. The older alluvium rests on the eroded edges 

 of these beds. The bluff in this locality is a fault scarp; that is, it 

 marks a line of faulting. This fault extends from Williams south- 

 eastward to Cache Creek and there turns south to Putah Creek. 



mass of Jurassip ai 



From Williams the road rises about 63 feet to 

 Arbuckle. Arbuckle, situated on a fan-shaped deposit of recent 



plpuSnlS^.; £^^^^^ ^^PPli^^ ^y tl^^ dissection of the earher 

 Seattle 817 mfles. Jrleistocene plateau. The principal industry here 



Harring 



;rowmg 



id, called the Beet Line, turns off 

 to Grimes and Colusa. The Une between Colusa and Yolo counties 



•rshey station. Dunnigan, the next 



H 



Dunnigan. village, lies cl 



f:;^^!^ ^^^^ 3! ^^l' f ^^f ted by streams into rounded 

 Seattle 827 miles. ^^^^^^- C)n this land ar3 grown wheat and barley, 



and the skiU of the farmers in taking traction engines 

 and combmed harvesters over these hills is remarkable. Notwith- 

 standmg the recent changes in agriculture previously noted, the 

 great staple product of the Sacramento VaUey is still wheat. There 



srain 



throu 



wheat regions of the world. Near Dunnigan a newer industry 

 IS seen m thousands of acres planted with eucalvptus trees. 



At the village of Zamora (Blacks Station post 

 zamora. office), the plain between the hills and Colusa Basin 



SpuilSf • '' ^""{ ^^^^^^^ ^^d backwater from the tule land has 

 Seattle 835 miles. been kuown to come within U miles of thp villii o-p 



oaks 



From Zamora the raih-oad rises about 30 feet to the viUage of 

 Yolo on Cache Creek. This stream leaves the Coast Range through 

 Yolo . P?T ^^?^^. ""^ Esparto and, crossing the plateau 



Elevation 73 feet. 

 Seattle S40 miles. 



throu 



mile 



m.nt I. ^ . T ?''''°' *^'^ P'^"'^ '^ ^*^g"^« to deposit sedi- 



wLn^''^ ^^«^/bf, 'mountains. In past time Cache Creek 

 has budt up a considerable area of country around Yolo and Wood- 



caEedVr'' n ^ T^'^ "^ ^''''^^^^^- ^^^ «f ^^^^ old branches, 

 St^ T , ^''^ ^0^°^' '"'^^^ northeastward from Yolo to 

 Knights Landing on Sacramento River. The sediment <leposited 



