WIjW7Z 
BY 
BY ERNEST F. BURCHARD, 1902. 
RIVER VALLEY AT SIOUX CITY, IOWA. 
TOPOGRAPHIC AND GEOLOGIC SKETCH MAP OF MISSOURI 
= = eiles 
erval 100 feet 
GRANEROS SHALE 
GREENHORN LIMESTONE 
foverlain by loess on uplands) 
 Lignite Prospects 
Gontour i 
alluvium in valleys) 
DAKOTA SANDSTONE 
in by 
rla 
(ove 
FIG. 1. 
