114 SOUTHWESTERN NEVADA AND EASTERN CALIFORNIA. 
REVEILLE VALLEY. 
Reveille Valley lies between the Kawich and Reveille ranges. 
The depression is separated into two parts by a low gravel divide 
north of its center, the northern portion draining northward and 
the southern portion draining southeastward into Railroad Valley] 
The Recent gravels are probably nowhere thick in Reveille Valley] 
Basall Hows underlie much of the area and form hills in the valleys 
and scarps along the drain line. Fig. 9 is a section across the 
valley, drawn north of west to the Kawich Range from a point on 
the Reveille Range 6 miles north of Reveille Peak. V single mass 
of early Miocene rhyolite is exposed beneath the basalt northeast 
of Sumner Spring. 
KAWICH VALLEY. 
The Kawich Valley lies between the Kawich and Belted ranges. 
It is separated from Railroad Valley to the northeast by a low gravJ 
divide and from Reveille Valley to the north by hills of basalt. 
Kawich Valley is notable for its even grade, since the mountains on 
either side have approximately an equal elevation and mass. Its 
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Rhyolite Basa 
Fig. 9. Section across north end of Reveille Valley, showing an inclosed valley partiallj 
underlain by basalt. 
playas lie at an elevation of about 5,300 feet above sea level. A fen 
rounded exposures of older alluvium lie 20 feet above the small 
playa on the road from Kawich to Indian Spring. These are similai 
to those of Gold Flat. 
REVEILLE RANGE. 
TOPOGRAPHY AND GEOGRAPHY. 
The Reveille Range is separated from the Pancake Range on the 
north by a narrow transverse gap and from the Belted Range oi 
the south by Railroad Valley. In former descriptions and in th< 
parlance of prospectors the Reveille and the Belted ranges ar< 
merged into one. the name Reveille being applied not only to tha 
range itself but also to the north end of the Belted Range. A 
here defined, each range is a unit, separated by a transverse valley 
from 2,500 to 3,000 feet below the crest line of the ranges. Thes« 
two north-south ranges are. however, aligned, and the structure 
the Paleozoic rocks indicates that prior to the long period of erosioi 
which preceded the Tertiary volcanism they were connected. 
