BULLETIN 614 



SHEET 1A 



GEOLOGIC AND TOPOGRAPHIC MAP 



OF THE 



COAST 



ROUTE 



From Los Angeles, California, to San Francisco, California 



Base compiled from United States Geological Surv^ey Atlas 

 Sheets, from railroad alignments and profiles supplied by 

 the Southern Pacific Company and from additional informa- 

 tion collected with the assistance of this company 



UNITED STATES GEOLOGICAL SURVEY 



■ 



GEORGE OTIS SMITH, DIRECTOR 



David White, Chief Geologist 



R. B. Marshall, Chief Geographer 



1915 



Each quadrangle shown on the map with a name in parenthesis in the 

 h we r left corner is mapped in detail on the U. S. G. S, Topographic 

 Sheet of that name. 



CALIFORNIA 34I 



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ELCVATiONS IN FeZT ABOVE MEAN 3£A l£v£L 



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EXPLANATION 



Sea-beach deposits (sand and gravel) and 

 stream deposits (mainly fine alluvium) 



Soft conglomerates, sands, and clays (Fer- 

 nando formation) 



Quaternary 



fEarly Quater- 

 -i nary, Pliocene, 

 and late Miocene 



bum 



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orenci 



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Ho^a'~a 

 umrni + 



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Mainly light-colored shale of Monterey group, 



underlain by sandstone and conglomerate 

 (Vaqueros sandstone) of Monterey group 

 and reddish-brown and green sand (Scspej 

 formation) J 



Lava and intruded masses (basalt), with 

 fragmenta! volcanic material (tuffs) 



Sandstone with some conglomerate and 

 shale (Topatopa formation) 



Conglomerate overlain by sandstone and 

 sl^le (Chico formation) 



Granite, gneiss, schist, and slate uncon- 

 fonnably underljing the Cretaceous 



Miocene and 

 Oligocene 



ren 





M 



on 



StLKiebaki 



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ardena 



Ivider 



^\ DomiipOue 



armenita 



^rfesia 



Redondo 



aWa'ter'a 



lough 



rito 



rot/ 



fo 



%b 



Chiefly 

 Miocene 



Eocene 



Cretaceous 



Pre-CretaceouR 



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LonO Beach 



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