U. S. GEOLOGICAL SURVEY 
°o 
BULLETIN 845 SHEET 21 
° 
I 
Scale 500,000 
linch=8 miles (approximately) 
5 10 iE} 
The distances from New Orleans, La., are shown every 
10 miles, and the crossties are drawn 1 mile apart 
Each quadrangle shown on tne map with 
in the lower left corner is mapped in detail on the U. 8. G. 
me 
8. 
topographic map of that na 
Rincon Mts 
@ 
a name in parentheses 
20 MILES 
1@) 
12} S 10 iss 20 KILOMETERS 
Contour interval 200 feet 
¢s mean sea leve/ 
SISA 
Ni 
ee 4 
~~ s 
Nts 
109 30 Arizona a2] 
C S > 
FS 
: 
} 
oe 
ERE RE 
Gircle Hills 
45 4 
Y 
iY 4 
fj 
‘Rasg 
Ws 
; Hado 
EL B/S 
\Y 
wy 
~ 
2 
142 
&y 
EXPLANATION 
0-600’ Quaternary 
0-1,000’ Tertiary 
A’ Sand, loam and gravel 
We ie B Lavas and other voleanic 
rocks 
(@| C Sandstone, limestone, shale, 4,000’ Lower Cretaceo 
Cx 
and conglomerate 
Naco a4 
‘yD Limestones Escabrosa 700’ Lorheneanna 
; Martin 3 
Ee Limestone Abrigo 750’ Cambrian 
Sandstone Isa 450’ 
p> F Sehist Pre-Cambrian 
G Granite Pre-Cambrian in part 
H Porphyry and granite Post-Carboniferous 
and post-Cretaceous 
- Topography: U.S. Geological Survey quadrangle maps 
WILLIAMS & HEINTZ CO. WASH. 0. C. 
