U. S. GEOLOGICAL SURVEY BULLETIN 707 SHEET No. 7 
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east 
GEOLOGIC AND TOPOGRAPHIC MAP 
OF THE 
From Denver, Colorado, to Salt Lake City, Utah 
Compiled from United States Geological Survey atlas 
sheets and rts, from railroad alinements and pro- 
files supplied by the Denver & Rio Grande Western 
Railroad Co., and from additional information col- 
lected with the assistance of that company 
PREPARED UNDER THE DIRECTION OF 
GEORGE OTIS SMITH, DIRECTOR 
Sheet No 5 
“ya eey’ 
Crea,” _... . 
* ee ae 
DAVID WHITE, Chief Geologist C. H. BIRDSEYE, Chief Topographic Engineer 
M. R. CAMPBELL, Geologist A. C. ROBERTS, Topographer 
1922 
EXPLANATION 
Age Thickness 
in feet 
White shale and sandstone (Green River formation) | 2,600 
Tertiary 
(Eocene) 
Red shale and sandstone (Wasatch formation) 3,400 
29-- 
Sandstone, shale, and coal beds (Mesaverde formation) | 2,200 5 
Dark marine shale (Mancos shale) \ Upper Cretaceous 3,000 % 
9 
=| 
M Brown sandstone (Dakota sandstone) i 50 ry 
@ he 
£ Es 
Variegated shale | (McElmo formation and La Plata Gy etaceous (7) and Oo] 
N sandstone, equivalent to : 310 . 
and sandstone \ Tanase Carnations) Jurassic 
White sandstone at and brick-red massi re 
Pp sandstone below Rag . = Triassic 350 
Xx Granite Pre-Cambrian 
Y Lava flow Tertiary aa: = os 
1 
Scale 500,000 ae 
Approximately 8 miles to | inch ,* 
ene 5 0 Mi 
i L i 
‘ 4; i,’ Calorade > w 4 
The crossties on the railroads are spaced / mile apagl 
shading by R. W. Berry ; 
EN@RAVED AND PRINTED BYTHE U.S.q8OLOGICAL SUAVE 
