Journal of Geology, Vol. XXVII, No. 2 



Plate 



System 



Reeenf 



Group or •Ser/es 



Li thole ay 



qspss 



end gran. 



''nyolific /'/orvs, pyroclaslu 



P/eishoceno 



Monfere^ 



Oligocene 



Astoria 





t/fl fPiv 



'\eo'2os-/,c/2C: sa.ids a^d , 



Eocene 



Uf>p.. 



oroup 



Coos Cong/omer€Tfc 



Empire 



rrj^^'. ^^^^'Sandit 



5o/en Beds"in parf^ 





^'-^^^'-'Conq/a/rrGr-a/c 





Saf}d3toncs anc/ //gh/ co/ored 

 coo/ -Seems 



Impura hmesionSj /vc7ss.'i/e micacQous 

 ■sandstones a/Jd s/?aJe.Sj a/?ide^///c 

 //?/ri/s/o/7S. 



Tefon 



^^izSiP^ Con^/c/rterafes^ sa/rd^hnes^ >sha/es^ 



