440 J. D. Dana—Results of the Earth's Contraction. 
The other geosynclinal belt of the Cretaceous era was to the 
west of the Sierra Nevada, as described by Whitney. This coast 
geosynclinal ended in extensive Sng cern and plications, 
much metamorphism, and a high synclinori 
(6.) The intermediate region—the Great Pisin which had been 
widened at the close of the Jurassic by the annexation of the 
plicated and consolidated Soke and Wahsatch—was the area 
of a eee ticlinal, or at least of absence of subsidence; for 
says no Cretaceous sks oceur over it. 
(D, With the close of the Cretaceous, or when the Cretaceous 
synclinorian movements of the sea-coast and mountains were 
ending, a geanticlinal movement of the whole Rocky Moun- 
tain region began, which put it above the sea-level, where it 
i ee since hemi This upward movement continued through 
the 
side, and he sag farther sca on Key coast bade 
In the coast geosynclinal, marine Tertiary beds were accumu- 
lated to a thickness of 4000 to 5000 feet ; Ae then followed the 
epoch of disturbance ending in another coast synclinorium, @ 
coast range of mountains, in some places metamorphic, and 
having ridges, many of which are at present 2,000 feet or more 
in height above the sea, and some — the Santa Cruz Range, 
4 according to Whitney, ores 3,500 fee 
he other is to the east of the Beaposis axis _ the summit 
region of the Rocky Mountain chain. A great thickness of 
freshwater beds was made in the Green River neato and some 
other places about the Rocky Mountain summits, and thinner 
deposits to the eastward. The thickness, in connection with 
instead are often folded together, and sometimes stand at a high angle, even wo 
eal in man a as in the Laramie Plains south of Fort Sanders; all 8 
Horn region ; en Long’s Peak and Pike’s cheese, —2 —— in Colorado, ete. 
Near the mouth oy the Big Horn e Che . 
trata and have a height of 1500 to 2000 feet — the ¥ Yellowstone. He 
found the later Tertiary beds sometimes tilted at a small angle, never over 10°. 
The discovery of Dinosaurian remains in some of the Coal beds, a nnounced by 
Marsh and Cope, and of Inocer rani, as ascertained by Meek, is one 1 part of the 
evidence on which the lower parts of the Coal ae yee is determined to be Cretaceous. 
Besides this, there is the fact that the supposed Aocene 0 of the Green River Basin 
iumibiid settinin 6k caacesiale Uhat. ave der ecidedly Eoce aoe 
are eevee, then the Coal beds are something older. "Prof. Marsh is very strongly 
that all the Coal beds ond Cretaceous 
of the € 
oe nt e other side, Lesquereux states that the’ evidence from fossil plants is 
totally opposed to making any of the Coal strata Cretaceous. . 
The method of mountain “eigenen and the poy involved, are the same wha 
ever be the decision as ga exact epoch of the Cretaceous plication. 
