ILLUSTRATIONS. 
Plate I. Geologic map of an area in southwestern Nevada and eastern 
California 
II. A, Pahute Mesa, showing benches determined by resistant flows 
of basalt; B, Death Valley, showing sand dimes protected by 
desert shrubbery (mesquite and creosote bush) 30 
III. Marble Canyon. Panamint Range, showing metamorphosed 
Pogonip limestone near quartz-monzonite batholith 200 
Fig. 1. Index map showing location of area in southwestern Nevada and 
eastern California 14 
2. Profile across Sarcobatus Flat and Amargosa Desert, showing 
relation of ground-water level to surface 1 21 
:'». Columnar section of rocks of southwestern Nevada and eastern 
California 27 
4. Economic map showing ureas of altered Tertiary rocks 43 
5. Flow folds in rbyolite (bill K) miles east of north of Mount Jack- 
son), showing thickening of more glassy rbyolite (white) on 
crests and troughs of folds and cross fractures in more lithoidal 
rhyolite on limbs of folds 08 
»',. East west section across Mount Jackson bills I mile south of 
halfway station 08 
7. Section across north face of Stonewall Mountain through Stone- 
wall Spring 88 
8. East-west section across Kawich Range, -I miles north of Kawich K>S 
'->. Section across north end of Reveille Valley, showing an inclosed 
valley partially underlain by basalt 114 
lOrEast-west section across Reveille Range at northern boundary of 
area surveyed 117 
11. East-West profile across Belted Range 3 miles north of Wheel- 
barrow Peak, showing nature, character, and present eastward 
tilt of Pliocene surface : 110 
12. East-west section across Belted Range through Belted Peak 120 
13. North-south section through Oak Spring Butte. Belted Range 127 
14. Second and third systems of quartz veins in granite at Trappmans 
('amp. as exposed on face of incline 139 
15. Northwest-southeast section through Specter Range 149 
10. Northwest-southeast section across Slate and Cold Mountain 
ridges 187 
17. East-west section across Death Valley miles north of boundary 
of area mapped 198 
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