BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



VOL. 3, PP. 369-394 JULY 15, 1892 



GEOLOGY OF THE TAYLORVILLE REGION OF CALIFORNIA. 



BY J. S. DILLEE, OF THE UNITED STATES GEOLOGICAL SURVEY, 



WASHINGTON, D. C. 



( Read Injure the Society December 29, 1891?) 



< '< >NTENTS. 



Page. 



Part I — The Geologic Column 370 



Introduction 370 



Reconnoissance of the California Survey 370 



Earlier Explorations of the United States Geological Survey ."-71 



Topography of the Taylorville Region 371 



Formations of the Taylorville Region .' . . 371 



Sedimentary Formations 371 



Eruptive Rocks 376 



Part II — Structure 377 



Introduction 377 



Unconformities 378 



Trias-< larhoniferous Unconformity 378 



Jura-Trias Unconformity 379 



Neocene-Jura Unconformity 382 



Pleistocene-Neocene Unconformity 383 



Deformation ; > s ' 



Structure of .Mount Jura ' :;s I 



( reneral Structure ;;s ~ 



( iellesee Anticlinal 388 



Northern A rm Synclinal 389 



Grizzly Anticlinal 390 



Taylorvilli Faull 391 



QQQ 



Siimmarv ■ 



•■in. fi Koi,. s,„ . \m.. Vol :. I*''! 



