118 SOUTHWESTERN NEVADA AND EASTERN CALIFORNIA. 
RAILROAD VALLEY 
Railroad Valley is a long depression between the Pancake and Re- 
veille ranges on the west and the Grant and Quinn Canyon ranges on 
the east. Its south end lies in the northeast corner of the area 
mapped and is of interest because it has two well-developed north- 
south drainage lines. The playa is 5,106 feet above sea level. 
BELTED RANGE. 
TOPOGRAPHY AND GEOGRAPHY. 
The north end of the mountain range east of Kawich Valley is 
called by prospectors the Reveille Range, while the south end is 
known as the Belted Range. The undesirability of using two names 
for a single mountain range is patent, and as the range immediately 
north has long been called the Reveille Range the name Belted will 
here be used for the whole range east of Kawich Valley. Thus de- 
fined, the Belted Range extends from the junction of Reveille, Ka- 
wich. and Railroad valleys southward l ( -> miles to Shoshone Moun- 
tain, which trends east and west. From the north end of the range 
the crest courses southwafdVto Wheelbarrow Peak, where it turns to 
the south-southwest. The range in the latitude of Oak Spring is 
13 mile- wide. The crest line has an average elevation of 7,000 to 
8,000 feel and lies in a median position, except in the central portion 
of the range, where the long eastward-sloping basalt mesas throw it 
nearer the western base. Wheelbarrow Peak and a dome 3 miles 
north of it reach an elevation of 8,600 feet : Belted Peak is 8,340 feet 
high. 
A gentle valley separates the Pogonip limestone from the rhyolite 
at the north end of the range and a. parallel detrital embayment lies 
wesl of Cliff Spring. The Pogonip limestone forms hills and ridges 
elongated parallel to their strike. The Pennsylvanian limestone where 
metamorphosed by granite form- rugged ridges, but elsewhere its 
topography is much less accentuated, the ridge- being comparatively 
low and smooth. Minor dip-slope elements are present in all the 
limestone formations, as well as in the earlier rhyolite near Cliff 
Spring. The Weber conglomerate forms broad domelike ridges of 
gentle slope. The earlier rhyolite forms domes and cone-shaped hills 
with which cliffs are combined near the crest line. Vertical joints 
aro less prominent in the earlier rhyolite of the Belted Range than in 
that of the Reveille Range, and in consequence spires are uncommon 
except to the north of Wheelbarrow Peak. The later rhyolite caps 
prominent buttes, like Oak Spring Butte, whose sides are formed by 
the -oft Siebert lake beds. The basalt mesa country is characterized 
by level slopes deeply cut by straight-walled canyons. 
