BULLETIN 612 



SHEET N0.11 



GEOLOGIC AND TOPOGRAPHIC MAP 



OF THE 



OVEELAND EOUTE 



From Omaha, Nebraska, to 



Francisco, California 



Base compiled from United States Geological Survey Atlas Sheets, 

 from railroad alignments and profiles supplied by the Union Pacific 

 Railroad Company and the Southern Pacific Company and from addi- 

 tional information collected with the assistance of these companies 



UNITED STATES GEOLOGICAL SURVEY 



GEORGE OTIS SMITH, DIRECTOR 



David White, Chief Geologist 



R. B. Marshall, Chief Geographer 



1915 



1 



Sandstone and shale; fresh-water deposits (Wasat^ch group and older Tertiary formations) 



B Sandstone, shale, and coal; fresh and brackish water deposits ("Lower Laramie'* forniation) 

 C Shale; marine deposit (Lewis shale) 



D Sandstone, shale, and coal; fresh and brackish water deposits (Mesaverde formation) 

 E F G Shale and sandstone; including equivalents of Steele shale (E), Frontier formation, fF)» 



and Mowry shale (G) 

 Sandstone (Cloverly formation) 



Thickness 

 in feet 



6.000-13,000 



1,000-4,000 



500-1.500 



2,000-3,600 



Tertiary 





- Cretaceous Scafe 



1 



H 

 I 



Sandstone and shale: fresh-water deposit 

 f Morrison formation) 



J Sandstone and shale; marine deposit {"Sundance formation) 



K Red sandstone and shale; fresh or brackish water deposits 

 (Chugwater formation) 



U Limestone and red sandstone; marine deposits (Casper formation) 

 M Quartzite 

 N Granite 



Jurassic or 

 Cretaceous 



Jurassic 



Triassic or 

 Permian 



Carboniferous 



Cambrian 



ArcheanC?) 



I 



6.000 

 100 



500.000 



Approximately 8 miles to 1 inch 



J 5 



'P 



15 



ZOMiles 



' 



1 o 



s 



JL-L 



10 



J- 



15 



20 



25 



3oKilometers 



- ■ ' ■ ■ 



L.t..l.l. ,A,,i 



I ^ I 



Contour Interval 200 feet 



ELEVATrONS 2N FEET ABOVE MEAN SBA LEVEL 



The distances from Omaha, Nebraska, are shewn every JO miles 

 Tk€ crossties on the railroads are spaced J mile apart 



108 



10730' 



iG7 



