LIST OF ILLUSTRATIONS, 

PLATE TO FACE PAGE 
. A, Wood Guleh, Humboldt County. : : : : : : ; ; < , - 26 
2. A, Rift above Shelter Cove, Humboldt County. B, Rift on divide between the upper Gualala 
and coast north of Fort Ross. : : ; : : > - 2s 
3. <A, Rift above Shelter Cove. B, Northeast of Shelter Gore Rift in middle ground. C and 
D, Looking up Garcia River along Rift. , : ; : ‘ d ; . ; poe 
4. Characteristic Rift features southeast of Fort Ross. : ‘ , ; : : ; « “Ze 
5. Characteristic Rift features near Fort Ross ‘ 3 : , , ‘ ; ; : ~ oe 
6. A, Looking down Tomales Bay from near Olema. B, Looking down Bolinas Lagoon Bay 
toward the Golden Gate. , : , . ‘ , ; ‘ ; ; +. ae 
7. A, Looking north in Bolinas-Tomales V diee B, Fault-sag and side-hill ridge near Bondi- 
etti’s ranch . ; ‘ : ‘ , : : ; , : ; : : » faz 
8. A, Fault-sag 6 miles south of Vidas B, Side-hill ridge 4 miles south of Olema_. . . 84 
9. <A, Side-hill ridge south of Olema. B, Rift topography, with pond, south of Olema F . 34 
10. A, Rift topography, with pond, near Bondietti’s ranch. B, Fault-trace near same . : a oe 
11. A, Fault-sag 2 miles south of Olema. B, Fault-sag 3 miles south of Olema + . 34 
12. A, Looking northwest along Rift. B, Great landslide at Mussel Rock, where Rift ote 
Coast from the Pacific < , ; ; , : : : ; . 36 
13. Characteristic ponds along Rift Sateen of Mussel Rock : ; . ; ; . . 10) 
14. Features of Rift between Mussel Rock and San Andreas Lake . ‘ , : P ‘ . BG 
15. Geomorphic and Geologic Map of San Francisco Peninsula ; : , : - ' . 38 
16. A, Rift valley between San Andreas and idee Springs. B, Rift valley 5 miles west of 
Stanford University . : ‘ ‘ i . . . : " . 38 
17. A, Rift followed by Pajaro River at Giemsa Dislocated ies supported by false work. 
B, Rift a mile southeast of Chittenden. : . , . ome 
18. A, Rift 3 miles southeast of Chittenden. B, Ponds along Rift near sis Benito ; . 40 
19. A, Rift south of Dry Lake Valley, San Benito County. B, Ancient scarp on line of Rift Be 
of Parkfield, Cholame Valley. : : : : ; : . 40 
20. Branch of Rift 2 miles southeast of Parkfield, anlgese ¥ ieee / : : : : - 40 
21. Rift, Carissa Plain : ‘ : : : : ; : - 
22. A, Cuddy Valley from head of oe Emadio ‘Sango 'B, Old Fault-searp in Rift . ; pe epee! 
23. <A, Rift from Emerson’s place, near Pattiway. B, Looking east along Rift from Gorman 
Station ’ . : ; ; : : ‘ ; : . 
24. A, Pond and searp in Rift a of Gonan Siatgon. B, Lower Lake Elizabeth in Rift. oe 
25. <A, Rift between Lake Elizabeth and Palmdale. B, Rift scarp west of Palmdale. , 42 
26. A, Sink between 2 scarps of Rift south of Palmdale. B, Pond in Rift 2 miles west of Big 
Rock Creek, Mojave Desert ; ; : ‘ , . 44 
27. A, Fault-scarp in Rift, Mojave Desert we st of big Rock Greek: B, Ridge in Rift near head 
of Swartout Valley. : : : ‘ ‘ : ; ‘ ; . 44 
28. A, Rift across mountain crest west ae Sw eon v sia: North slope of San Gabriel Range. 
B, Lone Pine Canyon across lower end of Cajon Canyon . : 44 
29. A, Rift from Cajon Pass, showing double scarp. B, Double fault-scarp in . Rift sii of ivi 
land, at base of San Bernardino Range — . ‘ ? , <> ge 
30. <A, Looking across Borego Valley toward south nee of San Tass faa -scarp. a, Nearer 
my view, upper end of Borego Valley —. : : ; : : ; ? « 47 
31. A, Fault-searp passing thru saddle at head of Wood Guleh. B, Auxiliary fault-trace follow- 
ing old scarp in saddle between Wood Gulch and Humboldt Creek. C, idl aph Hill 
along fault-trace. D, Looking north-northwest along main fault. , . 956 
382. A, Rocky stream cliff 50 feet high on north side of Alder Creek. B, Fault passing one 
bridge over Alder Creek. C, Barn of E. E. Fitch, north of Manchester. D, East-west 
fence 0.25 mile north of Manchester offset by fault . : : : : ; ‘ - 60 
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