TH K GRAND CANON DISTRICT ATLAS SHEET XXI 
UNITED STATES 'GEOLOGICAL SURVEY 
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WalJatr 
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<tu I'rttnrisco Sprj 
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o ) \ ( P i 0 a gho mtk 
‘ : \V j 1 1 ra i n 6^1 ci mil din 
ip/u/j //vv • • ypy- 
-fyuQo 
112°30 
Scale i?5o?ooD', aboui 4 miles to one Inch 
" "" l '"' 1 ' "W -L-® 11 - 1 - 11 «m l«l— il=&s=ifer=*sw- III I 'ill ^ J li ll us BioXlS.Cp.li 1 1 1. " ' '' S3S^.A*tSE=5«i ZSJ^- " i =V^= I III lllll HI ■ Hi' £M °^' 
GLOLOSIC MAP DP THU C'DAOPALL PALTfAII AIU) SAIT LPYATT CIS C D M QUHTA3IT S 
Noli- 1 t This region has been well surveyed toposraphiealh - but has been reconnoitred onh h\ the Leo sis. The colors l here lore are lo be regarded only os ail approximation to ihe distribution ol the strata, 
Archaean. • Lower Carboniferous Upp er Ciirbonilero us Permian Jam Trias * Volcanic 
mm 
Geology by C.E. DITTO N 
AR 
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