138 GUIDEBOOK OF THE WESTERN UNITED STATES. 
of the fine buildings constructed of Colorado Yule marble is the new 
Lincoln Memorial at Washington, At the town of Marble, near 
these quarries, there is said to be the largest marble mill in this 
country. 
At a point a short distance west of the station at Glenwood Springs 
the Denver & Rio Grande Western Railroad crosses Colorado River, 
and here the mouth of Roaring Fork may be seen on the left. The 
Ouray (Leadville) limestone, from which the hot sulphur springs 
issue, may be seen extending to the right for about a mile to a point 
where it passes into the hills and is lost to view. It is succeeded 
by the soft shale and sandstone of the Weber formation. The Denver 
& Rio Grande Western follows the right bank of the river. 
When the train has passed through the railroad yards and is mak- 
ing a rather sharp curve around an eastward bend of the river, the 
traveler may see Mount Sopris away off to the south (left), framed 
by the canyon walls of Roaring Fork. Mount Sopris is one of the 
high mountains in this part of Colorado, and it is one of the most 
beautiful, because it is a single mass that towers far above the sur- 
rounding: count 
The mountain sida across the river has been gashed by rain and 
frost, exposing the brick-red Triassic sandstone and shale. The 
same red beds may be seen on the north side of the river, but be- 
fore the train reaches them it must cross the maroon, white, and 
green beds of the Maroon formation. These beds may be seen in the 
low hills on the north (right) and also in places along the river, 
where they have been exposed in the excavation made for the road. 
The brick-red sandstones are the most resistant beds in this part 
of the series, and the point where the river cuts across them is 
therefore marked by a canyon which, although not so rugged nor so 
narrow as other canyons along Colorado River, has a richness and 
brightness of color that is excelled by few. The base of the Triassic 
beds is crossed near milepost 364, and the river here cuts nearly 
through the formation before it turns to the right and follows the 
strike of the rocks for several miles. At the sharp bend mentioned 
above the top of the formation is not clearly marked. Usually 
this formation contains rocks of no other color than brick-red, but 
a short distance beyond the river there is a band of white sand- 
stone nearly 100 feet thick and then about 300 feet more of a 
brick-red color. As the brick-red color is generally regarded as the 
distinguishing feature of this formation the line separating it from 
the overlying Gunnison shale is drawn provisionally at the upper- 
most bed that has the characteristic color. 
On the river bank opposite milepost 365, which is about half a 
mile beyond the sharp bend mentioned above, is the tipple of the 
South Canon Coal Co. The coal is not mined at this place, for the 
