Ts 
DENVER & RIO GRANDE WESTERN ROUTE. 37 
on end and then were partly removed by the dissolving action of the 
atmosphere. This is a slow process, but it is always in operation, 
and each day a few grains of sand are loosened and carried away. 
Under this constant attack new and picturesque forms are being 
produced and the old pinnacles and towers are being worn away. 
All these interesting monuments of the activity of weathering proc- 
esses will at some time be worn down to the level of the plain, but 
that time will be so far in the future that the loss of the monuments 
need not give much concern to the present generation. 
The great ledges that give to the Garden of the Gods its pic- 
turesqueness extend to the north and are again strikingly exposed in 
Glen Eyrie, which for a long time was the chosen home of Gen. 
Palmer. Plate XVII, C (p. 33), shows one of the more striking rocks 
in this well-known glen. 
* The rocks in and about the Garden , under the waters of shallow seas that 
of the Gods and Glen Eyrie are more | from time to time invaded this part of 
fully rasa by Prof. George I. Fin- | the continent. 
lay as follow si 
Few ragioe in the United States | connected with the oceans that sur- 
in At one 
: 
aes feng 
io] 
Maxie and the Arctic Ocean were con- 
ected by a sea that extended across 
with a bold front. At some places, Be ft: 
owing to Page or breaks in the beds | then reduced to a number of islands, 
of rock, the old, strong granite of the | many of which were nearly continental 
ence stands in direct contact with | in size. The shallow water between 
the young, weak rocks of the plains; | them became the settling ground for 
foo em T NMJ oI 
wee al N : ¥. 
“A 
RA . . 
ei Ses Katt ose “ye? 
y,* LAY ~ ‘ Ms - 
pa Sos Ne ete er ESS owl : a FE eS 
hrough Garden of the Gods. The 
are carved in the atemitas block of sandstone, and oh block is se 
rocks on both sides by faults. For explanation of 1 
at others, as at Manitou and in the ; the sand, mud, and gravel which the 
streams b: 
Fieurr 10.—Section spires and ps. of 2th ines 
Garden of the Gods, the sedimentary rought down from these great 
upturned in a narrow belt | islands. 
The 
foothills and plains are like books on 
a shelf which have fallen over toward 
one end, so that most of them lie at 
low angles, although a few are nearly 
vertical. (See fig. 10.) 
ese 
| o 
ocks lie in distinct layers 
because most of them were laid down 
80697" —22 4 
ducing it to mud and sand, and strong 
currents were carrying these materials 
widely over the sea floor, After this 
condition had prevailed for a long 
into shale, and gravel into conglomer- 
