IV 
CONTENTS. 
Geologic formations—Continued. Page. 
Fernando formation. 22 
General character and age. 22 
Paleontology of the Fernando formation. 23 
Lower Fernando fauna. 24 
Middle Fernando fauna. 25 
Upper Fernando fauna. 25 
Pleistocene deposits. 28 
In the vicinity of Saugus. 28 
At mouth of Sespe Canyon. 28 
Conglomerate of Lion Canyon. 28 
General structure of district. 29 
Introductory statement.'. 29 
Santa Clara Valley. 29 
Region north of the Santa Clara.•.,. 30 
Region south of the Santa Clara. 35 
Oil fields north of the Santa Clara. 3G 
Ojai Valley fields. 36 
Location. 36 
Structure. 36 
Oil wells. 39 
Pirie ranch wells. 39 
Lion Canyon wells. 40 
Langdell, Newmark & Roan wells. 40 
Wliidden-Double wells. 40 
Sobra Vista wells. 41 
Santa Paula wells. 42 
Southern Sulphur Mountain field. 42 
Location. 42 
Geology. 42 
Structure. 44 
Oil wells. 45 
Silver Thread or Sisar Creek field... 46 
Location. 46 
Structure. 1 . 46 
Oil wells. 48 
Field south of Santa Paula Ridge. 49 
Location. 49 
Geology and structure. 49 
Oil wells. 50 
Sespe fields.<.. 51 
Location. 51 
Structure. 51 
Oil wells. 54 
Union Consolidated wells. 54 
Region of Devilsgate. 54 
I vers wells. 55 
Kentuck wells. 50 
Happy Thought wells. 53 
Foot-of-the-Hill or Los Angeles wells. 53 
Fourfork wells. 00 
Tar Creek wells. 01 
