GEOLOGICAL MAP OF THE 
WESTERN PART OF THE 
PLATEAU PROVINCE 
US. GEOLOGICAL SURVEY 
GEOLOGY OF THE GRAND CANON DISTRICT 
Salt Lake 
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Geology by C.E. DUTTON, Geologisfin-Cbarge. 
Tertiary 
Cretaceous 
Jurassic 
Carboniferous 
Silurian 
Archaean TradhYleRhyohlc & Andesite Basalt 
Gc ale : IS miles l inch or j.ooo.ooo nearly. 
SHEET H. 
