UNIVERSITY OF CALIFORNIA PUBLICATIONS 



BULLETIN OF THE DEPARTMENT OF 



GEOLOGY 



), No. 15, pp. 255-266, plate 13 Issued April 14, 1917 



AGE OF STRATA REFERRED TO THE ELLENS- 

 BURG FORMATION IN THE WHITE BLUFFS 

 OF THE COLUMBIA RIVER 



BY 



JOHN C. MERRIAM and JOHN P. BUWALDA 



UNIVERSITY OF CALIFORNIA PRESS 

 BERKELEY 



