PL. XXXIX. 
1 
jgL{D COLUMBIAN MUSEUM. 
; 
GEOLOGY, 







Vermilion shale (Triassic). 
g. Red sandstone (Triassic). 
Intrusive granite. 
ee 
z 
Green shales (Jurassic). 
d. Cross-bedded sandstone (Jurassic). 
jf. Marine beds (Jurassic). 
é. 


7 i 
bp OS 
Yy oye : \ \ 
Y SOW . \ , 
2a AW 
a 
CORNY 
| \\\ AS \\ 
h \ y\ : : \\ \\ \\\\ 
YA 


Cross SECTION OF GRAND RIVER VALLEY FROM THE CREST OF RED MESA TO THE RIVER BED. 



\ 


Dakota sandstone (Cretaceous). 
Colorado group (Cretaceous). 
Variegated clays (Jurassic). 
a 
b. 
c 


——~ 
— 
\ 
\\ 

INK 
OO 
COC 
Ah 
VAAN \ 
\ - 
\ \\i\\ 










\\ 
A 
i \\ Ww 
LX \ Ww 











\ 





95" 




