CONTENTS (Continued) 



PART IV 

 SCIENTIFIC BACKGROUND OF SOUTHERN CALIFORNIA 



Page 



Structure 103 



Regional Types of Structure 104 



Regions Where Faulted Types Prevail 105 



Structure Provinces 106 



Structure Pattern of Southern California 106 



Conformation of the Physiographic Lineaments to Structures 108 



Previous Studies of Rifts 109 



Fault Structures and Earthquakes 109 



Faulting HI 



Classification of the Faults HI 



Master Faults 112 



Interior Faults 113 



Rectilinear Plan of the Faulting 114 



Nature of the Fault Lines 114 



Extra Territorial Extent of the Master Faults 115 



Nature of the Displacements 116 



Movements Along Fault Lines 116 



Rate of Movement 120 



Time of Movements 121 



Cross Faulting 121 



The Fault Block Structure 124 



Cumulative and Renewed Uplifts Along Fault Lines 125 



The Belted Groups of Faults 126 



Provisional Classification of the Rifts of Southern California 128 



Further Definition of the Belted Groups of Structure 129 



The North-South Trending Belts of Faulting 130 



The Colorado Depression 131 



The Northwesterly Fault Belts 134 



First Group of Northwest Trending Structures 135 



Northwest Structure of the Catalina Group 136 



Structure Features of the Great Transverse Belt 136 



The Anacapa Lineament 137 



Other Fault Lines of the Transverse Belt 139 



The Santa Ynez Faults 141 



The East-West Faults of San Gorgonio Pass 142 



The Lawrence Fault 143 



XI 



