U. S. GEOLOGICAL SURVEY 



MONOGRAPH 55 PLATE III 



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A. UPPER BEDS OF TORREJON FORMATION, WEST FORK OF TORREJON ARROYO, SANDOVAL COUNTY, N. MEX. 

 The Torrejon is overlain unconformably^y the basal sand^ones of the Wasatch(?) formation 



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B. EXPOSURES OF PUERCO FORMATION 3 MILES EAST OF OJO ALAMO, N. MEX. 



BASAL EOCENE AND LOWER EOCENE CONTACTS IN NEW MEXICO 



Photographs by W. J. Sinclair, 1913. (After Sinclair and Granger, 1914.1) 



