XIV ILLUSTRATIONS. 



Page. 



Plate XLII. — Tnt'a tn^er on the shore of W iiiuenincca Lake (from a photograph) 216 



XLIII. — Tufa domes in Mono Late, California {from a })hotofiraph) i*i>2 



XLIV. — Map of post Quaternary faults 274 



XLV. — Post-Quaternary fault on the south shore of Huuibohlt Lake (from u photogruph) 276 

 XLVI. — Map of Lake Lahontan (in pockel at end of volume). 



Fig. 1. — Ideal section illustrating Basiu Range structure... 2.5 



2. — Ideal .section through the Black Rock Desert, Nevada 27 



A. — Ideal section through the Pahute Range, Nevada 27 



4. — Ideal section through Pyramid and Winnemucca lakes, Nevada 27 



5. — Ideal section through the Carson River Canon, Nevada 44 



6. — Deposits of calcium carbonate from snb-laenstral springs 61 



7.^Map of aportion of the east shore of Pyramid Lake, showing jiosition of measured rocks 65 



8. — Ideal profile of a cut terrace 88 



9. — Ideal profile of a cut and built terrace 88 



10. — Ideal plat and section illustrating the formation of barrier bars 91 



11. — Ideal plat illustrating the formation of embankments 94 



12.— Diagram illustrating the relative age of gravel terraces and embankments 95 



1,3. — Ideal section of a high-grade delta ; 97 



14. — Generalized profile of Lahontan terraces 102 



15. — Profile of lithoid terrace and Lahontan beach Wi 



16.- — Profile of gravel embankment at west end of Humboldt Lake, Nevada 107 



17. — Section of embankment at west end of Humboldt Lake, Nevada 108 



18. — Section of bar on the Niter Buttes, Nevada 110 



19.- — Map of gravel embai knicnts at south end of Winnemucca Lake 120 



20. — Section of gravel embankments at scuith end of Winnemucca Lake 120 



21. — Sketch-map of gravel ombankmenls in Churchill Valley, Nevada •- 121 



22. — Sketch-map of gravel embankments at south end of Quinn River Mountain, Nevada . . . 122 



23. — Volcanic dust 146 



24. — Section of White Terrace, west side of Pyramid Lake, Nevada 151 



25. — Reverse fault in Lahontan gravels 164 



26. — Recent faults in lacustral clays, Humboldt V.-i'ley, Nevada 165 



27. — Section of current-bedded gravel between lithoid and thinolite tufa 191 



28. — Diagram showing .succession of tufa deposits 204 



29. — Vertical and horizontal sections of a tufa tower 209 



30. — Section of reservoirs and vats at Eagle sal t works, Nevada 234 



31. — Curve illustrating the rise and fall of Lake Lahontan 237 



32. — Larval cases of Caddis fly inclosed in tufa 246 



33.— Spear-head of obsidi.an, from Lahontan sediments 247 



34. — Curve of Lahontan climate ; Wet rersH-s Dry 261 



35. — Curve of Lahontan climate; Warm t'er««8 Cold 263 



— ld( al cross profiles of fault beds 279 



