﻿ILLUSTRATIONS. 
  

  

  Page. 
  

   Plate 
  I. 
  Preliminary 
  geologic 
  and 
  structural 
  map 
  of 
  the 
  Santa 
  Maria 
  district 
  . 
  Pocket 
  

   II. 
  Columnar 
  geologic 
  section 
  of 
  -the 
  Lompoc 
  and 
  Guadalupe 
  quadran- 
  

   gles 
  26 
  

  

  III. 
  A, 
  View 
  of 
  characteristic 
  exposure 
  of 
  volcanic 
  ash 
  on 
  Cuyama 
  River; 
  

  

  B, 
  View 
  of 
  flinty 
  Monterey 
  shale 
  on 
  Sisquoc 
  River 
  34 
  

  

  IV. 
  A, 
  View 
  of 
  characteristic 
  exposure 
  of 
  diatomaceous 
  shale 
  north 
  of 
  

  

  Casmalia; 
  B, 
  View 
  showing 
  in 
  detail 
  weathering 
  of 
  diatomaceous 
  

  

  ♦ 
  shale 
  36 
  

  

  V. 
  A, 
  Typical 
  specimen 
  of 
  diatomaceous 
  shale; 
  B, 
  A 
  similar 
  shale 
  after 
  

  

  metamorphism 
  by 
  burning 
  36 
  

  

  VI. 
  A, 
  View 
  of 
  upper 
  Fernando 
  gravel, 
  east 
  of 
  Figueroa 
  Creek; 
  B, 
  View 
  

  

  of 
  sharp 
  folds 
  in 
  Monterey 
  shale 
  north 
  of 
  Zaca 
  Lake 
  46 
  

  

  VII. 
  Geologic 
  sections 
  across 
  Guadalupe 
  and 
  Lompoc 
  quadrangles 
  74 
  

  

  VIII. 
  A, 
  View 
  of 
  Alcatraz 
  asphalt 
  mine, 
  east 
  of 
  Sisquoc; 
  B, 
  View 
  of 
  Mio- 
  

   cene-Pleistocene 
  unconformity 
  northeast 
  of 
  Casmalia 
  78 
  

  

  IX. 
  A, 
  B, 
  Panorama 
  of 
  monocline 
  in 
  Monterey 
  shale 
  northwest 
  of 
  Cas- 
  

   malia; 
  C, 
  D, 
  View 
  looking 
  north 
  at 
  Graciosa 
  and 
  Western 
  Union 
  

  

  wells 
  -80 
  

  

  X. 
  Sketch 
  contour 
  map 
  of 
  the 
  Santa 
  Maria 
  oil 
  field 
  92 
  

  

  XI. 
  A, 
  View 
  of 
  Fernando 
  brea 
  deposit 
  overlying 
  Monterey 
  shale, 
  Gra- 
  

   ciosa 
  Ridge; 
  B, 
  View 
  of 
  saddle 
  in 
  Monterey, 
  Fernando, 
  and 
  Pleis- 
  

   tocene 
  beds 
  near 
  Hartnell 
  well 
  No. 
  1 
  98 
  

  

  XII. 
  Tejon 
  (Eocene) 
  fossils 
  126 
  

  

  XIII. 
  Knoxville 
  (Cretaceous) 
  and 
  Tejon 
  (Eocene) 
  fossils 
  128 
  

  

  XIV. 
  Tejon 
  (Eocene) 
  Pelecypoda 
  130 
  

  

  XV. 
  Vaqueros 
  (lower 
  Miocene) 
  fossils 
  132 
  

  

  XVI. 
  Vaqueros 
  (lower 
  Miocene) 
  fossils 
  •. 
  134 
  

  

  XVII. 
  Vaqueros 
  (lower 
  Miocene) 
  Pelecypoda 
  and 
  Brachiopoda 
  136 
  

  

  XVIII. 
  Vaqueros 
  (lower 
  Miocene) 
  Pelecypoda 
  138 
  

  

  XIX. 
  Monterey 
  (middle 
  Miocene) 
  diatoms 
  140 
  

  

  XX. 
  Monterey 
  (middle 
  Miocene) 
  diatoms 
  142 
  

  

  XXI. 
  Fernando 
  (Pliocene) 
  Gasteropoda 
  144 
  

  

  XXII. 
  Fernando 
  (Pliocene) 
  fossils 
  146 
  

  

  XXIII. 
  Fernando 
  (Pliocene) 
  fossils 
  148 
  

  

  XXIV. 
  Fernando 
  (Pliocene) 
  fossils 
  , 
  150 
  

  

  XXV. 
  Fernando 
  (Pliocene) 
  pectens 
  152 
  

  

  XXVI. 
  Fernando 
  (Pliocene) 
  pecten 
  154 
  

  

  7 
  

  

  