SHASTA ROUTE — SEATTLE TO SAN t^RANCISCO. 



75 



The stations of Logandale and Norman are passed in turn, and 1^ 



2 



miles south of Norman station the raikoad crosses from Glenn County 

 into Cohisa Comity. Near Delevan, the next station, as at many 

 other places along the Shasta Eoute in California, the bright-yellow 

 to orange-colored poppies {Esclisclioltzia cdlifornica) form glowing 

 clumps in sprmg and early in the summer. Beyond Maxwell (sec 

 sheet II; p. 76), an old village of the grain-farming days, is Colusa 



Junction, where the Shasta Route crosses the Colusa 

 Maxwell. ^ Lake Railroad. This line rmis from Colusa, on 



Sacramento River, westward to Lakeport, in Lake 

 County, It passes at Sites the sandstone quarry that 

 furnished the material for the Ferry Building in San 

 Francisco, Lakeport, on Clear Lake, in the Coast Range, is in a farm- 

 Evidence of recent volcanic activity and the occurrence 

 of deposits of quicksilver ore and sulphur give additional interest to 

 the pretty country about Clear Lake, 



Twenty miles east of Maxwell the rugged Marysville Buttes rise 

 abruptly from the plain, forming a landmark that can be seen for 

 many miles in all directions.* 



The land near. Williams is outside of the area served by the Sac- 



Elevation 93 feet. 

 Population 864.* 



Seattle 798 miles. 



nig region. 



Williams. 



Elevation 79 feet. 

 Population 1,463.* 

 Seattle 806 miles. 



ramento Valley Irrigation Co.'s ditch^ and the local 

 farmers pump their owti water. Several pumping 

 plants may be seen south of the town. To the east 

 is the Colusa Basin, a shallow trough which parallels 

 the river as far south as Kjiights Landing, east of 

 ^amora station. \Mien the levees along the river break this basin 

 is flooded and forms a veritable inland sea from Colusa to Knights 



Landing Ridge. 



West of Williams the bench of older alluvium becomes wider and 

 more promment and extends m a southeasterly direction to Yolo. 

 North of the village this httle plateau is about 400 feet above sea level 



^ The Marysville Euttes are a cluster of 

 hilla about 10 miles in diameter, culmi- 

 nating in South Butte, 2,132 feet above 

 sea level. North Butte has an elevation 

 of 1,863 feet. The central area, about 4 

 miles in diameter, is composed of andesite, 

 a lava that was pushed up from the in- 

 terior of the earth in a molten but stiff 

 condition. Around the andesite is an 

 irregular belt of sandstone and shales of 

 Tertiary age, bent upward by the force of 

 intrusion of the andesite so that they dip 

 awayfromthecenteratanglesofl8°to90''. 

 An outer belt, about 2 miles wide, of 

 tiiffaceous breccias, consisting of angular 



fragments of lava of various sizes with 

 some pebbles of other rocks, surrounds the 

 sandstone and shales. The material of 

 these breccia beds probably once flowed 

 from the crater of the volcano as a thick 

 stony mud. The streams flowing down 

 from the buttes have broad valleys which 

 are filled with alluvium in their lower 

 courses. The hills have an outer slope of 

 250 feet to the mile and a steeper in-facirg 

 scarp or bluff. A projection of the outer 

 slope to the center would restore the 

 outline of the old volcano, making it about 

 5,000 feet high, or over twice the present 

 height. 



