ILLUSTRATIONS. 
FIGURES. 
Fiaure 1. Map of Colorado and part of Utah, showing areas covered by 
United aoe Geological Survey topographic maps and 
eologic fol 
becom EEN, and Seti front north of Plainview, as 
seen from the “ Moffat road” 
Ny 
3. Arch of the Front Range ue a 
4. Diagrams showing effect of stream and glacial erosion______ 
5. Dakota hogback south of South Platte River 
6. Section ee of Platte Canyon 
7. Castle Rock from the north 
8. Sketch section Ted, Palmer Lake, showing fau 
9. Section at Pikeview, showing the fault pont separates the rocks 
of the plains from those 
10. Section through Garden of the 
11, Profile section through Pikes Peak and Cascade, showing the 
rene on of the mountain peak to the lower land (peneplain) 
n either side 
; Sections showing supposed outline of the Cripple Creek vol- 
x 
ano 
i dastlaes showing fault at foot of Cheyenne ae gare 
. State of Jefferson, as it was proposed in 1 
. Sandstone bed at base of coal- pum formation at crossing of 
Arkansas River near mouth of Oil 
16. Section from Canon City to P ae pera former extent 
of the Dakota and Morrison tiinetiie and the pinching out 
westward of the lower formations 
17. Cross section of the Sangre de Cristo Range and the valley on 
its east side, at Pleasanton, showing the anticline of the moun- 
tain and the syncline on the east 
18. Lava-capped hill south of Howard 
9. Section of the Sangre de Cristo Range _ the valley on its 
east side, through Hunts Peak and Howa 
20. aon mea from Sawatch Range to ea Cany on, show- 
e deep gravel filling in the old channel of the Arkan 
fob fk 
im CO 
a 
| 
sas 
21. Sketch map of Brown Canyon, showing its relaticn to the 
23. Great cirque on Mount Harvar 
24. Mountain peaks of Sawatch fer at the head of Lake Creek, 
aS seen from milepost 265 
25. The Mosquito Range as seen from milepost 269, at the mouth of 
Towa Guich 
26. Mineral production of Lake County from 1877 to 1918, inclu- 
ve 
27. Section through some of the workings at Leadville, showing the _ 
relation of the ore to the limestone, porphyry, and quartzite_ 
28. grag across Eagle Park, showing the thin cap of quartzite 
e west and the pene Ree, ene ee ee ee 
ads on the east : 
29. Meanders of Eagle River in Eagle Park ok ne ton 
30. Sketch map showing old and new moraines above Minturn_. 
Vil 
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