BULLETIN 611 SHEET No. 10 
105° 
NORTH DAKOTA-MONTANA 
GEOLOGIC AND TOPOGRAPHIC MAP 
THE 
NORTHERN PACIFIC ROUTE 
From St. Paul, Minnesota, to Seattle, Washington 
Base compiled from United States Geological Survey Atlas 
Sheets, from reageik ad alignments re profiles supplied by 
the Northern Pacific Railway Company and from additional 
inforraation iw with the cama of this company 
UNITED STATES GEOLOGICAL SURVEY 
GEORGE OTIS SMITH, DIRECTOR 
David White, Chief Geologist B. Marshall, Chief Geographer 
1915 
rs h quad he on the map with a name in parenthesis in the 
wer left corner igs mapped in detail on the U. S. G. S. Topographic 
pens of that name. 
~ 
3 
Sheet No.// 
Sheet No.9 
mation 
Union formation B 
1 
EXPLANATION Scale , 500000 
Thickness a cana 8 miles to } inch 
ou tae 2 ? UL A. MO, oe 
A Stream deposits (alluvium) Quaternary Here ars Aer ‘\ 
B Sandstone and shale, with beds of lignite (Fort oe. § LD 
Union formation) 1,200 Tertiary 
Contour geo 200 feet 
Sandstone and shale, oO be — of lignite ELEVATIONS IN FEET ABOVE MEAN Aoi LEVEL 
— mS Lance 500 The di 4) St Paul Minnesot: 
Wf formation). reer at its Tertiary () The crossties on the railroads are spaced | mile apart 
sandstone of Por Hills, Cretaceous, age 175 ; 
E Dark shale (Pierre) 2,500 Cretaceous 
ae ‘ ; | 
| | 
Os” 104° a0 104" 
