10 
SANTA MARIA OIL DISTRICT, CALIFORNIA. 
ACKNOWLEDGMENTS. 
Mr. H. R. Johnson covered the territory northeast of the Santa 
Maria Valley, and the map and notes concerning that region are 
largely the result of his work. Dr. H. W. Fairbanks® is quoted on 
the geology of Point Sal. 
The writers are greatly indebted to Mr. F. J. Keeley and Prof. C. S. 
Boyer, of Philadelphia, and to Dr. Albert Mann, of the United States 
Department of Agriculture, for information concerning diatoms and 
their relation to the origin of the oil. Acknowledgments are also due 
to Messrs. E. C. Sullivan, W. T. Schaller, and George Steiger for 
making analyses of the Monterey shale. The analyses of oil on 
pages 115-117 were made by H. N. Cooper and published by the Cali¬ 
fornia State Mining Bureau in its Bulletins Nos. 31 and 32. The 
indebtedness of the writers to Mr. Cooper and to the mining bureau 
for this information is hereby acknowledged. 
Without the assistance of the operators in the developed field that 
part of the report which relates to the geology of the wells, produc¬ 
tion, and other technical data would have been an impossibility, and 
the writers therefore wish to acknowledge their indebtedness to the 
officers and managers of the different oil companies for their hearty 
cooperation and support. Thanks are due more particularly to Mr. 
W. W. Orcutt, geologist of the Union Oil Company; Messrs. J. F. 
Goodwin and F. J. Burns, of the Pinal and Brookshire oil companies; 
Judge John D. Bicknell and Mr. Morris Albee, president and secre¬ 
tary, respectively, of the Western Union Oil Company; Mr. Adolph 
Phillips, of the Graciosa Oil Company; Mr. W. O. Maxwell, of the 
Recruit Oil Company; Mr. Charles Off, of the Rice Ranch Oil Com¬ 
pany; Mr. E. E. Henderson, of the Palmer Oil Company; Mr. F. D. 
Hall, of the Hall & Hall Oil Company; Mr. W. A. Irwin, of the Clare¬ 
mont Oil Company; Capt. N. P. Batchelder, of the Los Alamos Oil 
and Development Company; Mr. Frank M. Anderson, geologist of the 
Southern Pacific Company; Mr. William Yanderhurst, of the Todos 
Santos Oil Company; Mr. D. G. Scofield, vice-president of the Stand¬ 
ard Oil Company, and many others whose assist ance has added mate¬ 
rially to the value of this report. 
PREVIOUS KNOWLEDGE OF THE GEOLOGY. 
Little attention has been given heretofore to the geology of the 
Santa Maria district. The earliest work was done by Thomas Anti¬ 
sell, with the assistance of observations by Albert Id. Campbell, in 
the course of the explorations and surveys for the Pacific Railroad 
a The geology of Point Sal: Bull. Dept. Geol., Univ. California, vol. 2, 1896, pp. 1-92. 
