* sr V^-XT 



-— ■■■ "• — 



DEPARTMENT OF THE INTERIOR-U. S. GEOLOGICAL SURVEY 

 J. \V. POWELL DLREOTOB 



THE 



PHYSICAL GEOLOGY 



OF THE 



GRAND CANON DISTRICT 



BY 



CT.ARTCNCE E. DUTTON 



Extract kkom thu Annual Rki-okt ok tiik Dikkctok ok tiik U. S. Okoi.ock-ai. Survey— 1880-81 



53081 



WASHINGTON 



GOVERNMENT PRINTING OFRICE 



1882 







