222 University of California Publications in Geology [Vol. 7 



contain evidence of organic origin. Prominent zones of nodular 

 calcareous shales are characteristic of this middle portion of the 

 series. The upper third of the formation includes an indefinite 

 zone of sandstone beds that are irregularly intercalated in limy- 

 siliceous shales. The succession and character of these sedi- 

 ments coincides very closely with those of the lower division of 

 the Monterey in the Santa Maria district. The upper division, 

 so prominently developed near Lompoc, in the Santa Maria dis- 

 trict, is absent from the McKittrick-Sunset region, unless the 

 basal organic shales of the formation here described as Santa 

 Margarita ( ?) formation are the same as those described as upper 

 Monterey in the Santa Maria report" (pp. 56-57). 



The Vaqueros and Monterey together are given as conform- 

 able, but with supposed unconformable relations to the over- 

 and underlying formations. We may be sure that the Monterey 

 series is represented here, and that it shows many similarities 

 of depositional progress to that of the Southern Coast Ranges. 

 Evidence for age and divisions as given does not appear to be 

 particularly good in the area studied, but the attempted discrim- 

 inations are made on the basis of ideas developed elsewhere. 



Geologic Record of California, J. P. Smith, 1910. — In the 

 "Geologic Record of California" (1910) a summary by J. P. 

 Smith, 71 a geologic column is presented exhibiting a standard 

 marine section for the Coast region of which the Tertiary part 

 is as follows : 7 - 



" .Jour. Geol., vol. 18, pp. 216-226 (1910). 

 Log. cit.. plate following page 217. 



