1(50 
INDEX 
Q. Page- 
Quaternary deposits, character of. 27 
description of. 60-64 
Quaternary terraces, description of 23-24,25,60-63 
Quaternary time, history in. 69-71 
R. 
Radiolaria, occurrence of. 39,40 
Railroads, access by. 15 
Rainfall, amount of. 25-26 
Redrock Mountain, altitude of. 22,49 
asphalt near.85,118 
geology on. 49 
oil on. 86 
Refineries, statistics of. 122 
Relief, description of. 16-25 
R4sum6 of paper. 122-124 
Rice ranch-Hobbs-Ilall area, description of. 94-96 
Rincon Volcano, duration of. 49 
S. 
Salsipuedes Creek, fossils at. 40 
Monterey shale on.35,39 
analysis of. 45 
geology on. 62 
San Antonio terrace, definition of. 16 
diatomaceous earth in. 38 
oil in. 82-83,91 
structure of.'.81-82 
San Lorenzo formation, correlation of. 27 
San Luis formation, correlation of. 27 
San Pablo formation, correlation of. 27 
San Pedro formation, correlation of. 27 
San Rafael Mountains, definition of. 15 
description of. 17 
geology of. 30,31,35,55,65,68 
oil in, evidence of. 78 
future development of. 79-80 
structure of. 76-78 
upheaval of. 69 
Sand, occurrence and description of.63-64 
Santa Lucia Canyon, oil near. 91 
Santa Maria field, contours of. .*.92-93 
map of. 92 
discussion of.92-93 
oil zones in. 93-94 
wells of.93-104 
See also particular areas. 
Santa Maria Oil and Gas Co., lease of, fos¬ 
sils from. 57-60 
Santa Maria Oil and Gas-Escolle-Pinal-Fol- 
som area, description of.98-99 
Santa Maria Valley, description of. 19 
geology of. 62 
oil in. 91 
Santa Rita Hills, definition of. 16 
description of. 23 
diatomaceous earth in. 38 
geology in.35,57 
oil in. 81,91 
structure in_•..80-81 
Santa Rita Valley, geology in. 56 
Santa Ynez, diatomaceous earth near. 38 
oil near. 86 
Santa Ynez anticline, description of. 86 
Page. 
Santa Ynez Mountains, definition of. 15 
description of. 18-19 
geology of. 11-12, 29,31, 62, 66-67 
oil in. 80-81 
structure of.80-81 
upheaval of. 69 
Santa Ynez Valley, description of. 23 
Saxidomus gracilis Gould, occurrence of... 59 
sp., occurrence of. 59 
Scala sp., occurrence of. 59 
Schumann, fossils near. 57-60 
geology near. 54,82 
Schumann anticline, description of.81-82 
oil in. 91 
relations of. 87-88 
Schumann Canyon, geology near. 65 
oil near. 91 
Sea-urchin bed, fossils from. 57-60 
Sedimentary rocks, correlations of. 27 
description of. 26-64 
Serpentine, occurrence of. 65 
Sespe formation, character of. 29 
correlation of. 27 
description of. 29-33 
occurrence of. 29 
Shale, fractured, accumulation of oil in_73-74 
Sigaretus debilis Gould, occurrence of. 59 
Silica in Monterey shale, origin of. 41-42 
Silicification, effect of. 47 
Siliqua edentula Gabb, occurrence of. 59 
Sisquoc, asphalt near. 78 
fossils near. 57-60 
geology near. 54,56,65 
oil near. 79,91 
Sisquoc River, asphalt on. 78 
Monterey shale on, view of. 34 
Solen sicarius Gould, figure showing. 59 
sp., occurrence of. 32 
Solomon, Mount, altitude of. 20 
asphalt on. 88 
geology near. 54 
oil in.88,91 
structure of.87-88 
Solomon Hills, definition of. 16 
description of. 20-21 
geology of. 56 
Spisula catilliformis Conrad var. alcatraz- 
ensis Arnold, figure showing.... 148 
catilliformis Conrad var. alcatrazensis 
Arnold, occurrence of. 59 
sisquocensis Arnold, figure showing_ 148 
occurrence of. 59 
Sponge spicules, occurrence of. 42 
Structural map of Santa Maria district... Pocket 
Structure, detailed discussion of. 75-91,103-105,108 
lines of, convergence of. 18-19 
map showing. 92 
origin of. 75 
topography and, relations of.24-25 
T. 
Tapes lacineata Carpenter, occurrence of... 60 
staleyi Gabb, occurrence of. 60 
tenerrima Carpenter, figure showing... 146 
occurrence of. 60 
