﻿STRUCTURE 
  AND 
  CONDITIONS 
  AFFECTING 
  PRESENCE 
  OF 
  OIL. 
  83 
  

  

  becomes 
  more 
  nearly 
  normal, 
  both 
  flanks 
  will 
  probably 
  be 
  found 
  

   productive 
  if 
  penetrated 
  deep 
  enough. 
  The 
  surface 
  structure 
  indi- 
  

   cates 
  that 
  the 
  oil 
  horizon 
  plunges 
  to 
  a 
  greater 
  and 
  greater 
  depth 
  

   under 
  the 
  whole 
  region 
  southeast 
  of 
  Casmalia 
  Creek. 
  The 
  anticline 
  

   south 
  of 
  Antonio 
  is 
  well 
  defined 
  and 
  conditions 
  favor 
  the 
  presence 
  

   of 
  oil 
  on 
  both 
  this 
  and 
  the 
  other 
  anticline 
  of 
  the 
  San 
  Antonio 
  terrace. 
  

   The 
  main 
  anticline 
  on 
  the 
  coast 
  north 
  of 
  Point 
  Sal, 
  already 
  men- 
  

   tioned, 
  is 
  in 
  the 
  Vaqueros 
  and 
  is 
  doubtless 
  barren 
  of 
  oil. 
  North 
  of 
  

   this 
  locality 
  the 
  Monterey 
  is 
  decidedly 
  bituminous, 
  but 
  no 
  special 
  

   circumstances 
  point 
  to 
  the 
  existence 
  of 
  petroleum 
  in 
  large 
  quantity. 
  

   It 
  is 
  quite 
  possible 
  that 
  the 
  region 
  north 
  of 
  Mussel 
  Rock, 
  the 
  next 
  

   point 
  to 
  the 
  north, 
  would 
  prove 
  promising 
  if 
  the 
  surface 
  covering 
  

   allowed 
  the 
  examination 
  of 
  the 
  underlying 
  formations 
  and 
  the 
  deter- 
  

   mination 
  of 
  anticlines. 
  The 
  structure 
  seems 
  to 
  cause 
  the 
  forma- 
  

   tions 
  to 
  plunge 
  toward 
  the 
  north 
  from 
  the 
  north 
  end 
  of 
  the 
  Casmalia 
  

   Hills, 
  and 
  a 
  fairly 
  high 
  portion 
  of 
  the 
  Monterey 
  may 
  underlie 
  the 
  

   region 
  at 
  the 
  mouth 
  of 
  the 
  Santa 
  Maria 
  Valley. 
  

  

  BURTON 
  MESA. 
  

  

  The 
  plateau 
  known 
  as 
  Burton 
  Mesa 
  is 
  a 
  region 
  of 
  numerous 
  low 
  

   folds 
  in 
  the 
  Monterey. 
  Along 
  the 
  coast 
  the 
  flinty 
  shales 
  are 
  of 
  low 
  

   dip, 
  but 
  folded 
  and 
  contorted 
  in 
  a 
  complex 
  way. 
  The 
  folds 
  indi- 
  

   cated 
  on 
  the 
  map 
  are 
  the 
  most 
  important 
  ones, 
  but 
  whether 
  or 
  not 
  

   they 
  are 
  perfectly 
  continuous 
  units 
  across 
  the 
  mesa 
  can 
  not 
  be 
  defi- 
  

   nitely 
  ascertained 
  on 
  account 
  of 
  the 
  covering 
  of 
  sand 
  over 
  the 
  shale. 
  

   The 
  mesa 
  appears 
  to 
  be 
  structurally 
  a 
  continuation 
  of 
  the 
  region 
  

   near 
  Lompoc 
  as 
  much 
  as 
  it 
  is 
  of 
  the 
  Purisima 
  Hills, 
  although 
  topo- 
  

   graphically 
  it 
  is 
  a 
  continuation 
  of 
  the 
  latter. 
  In 
  the 
  neighborhood 
  

   of 
  Pine 
  and 
  Santa 
  Lucia 
  canyons 
  there 
  is 
  a 
  thick 
  series 
  of 
  shales 
  

   striking 
  far 
  to 
  the 
  north 
  of 
  west 
  and 
  directing 
  the 
  structural 
  lines 
  

   across 
  the 
  Lompoc 
  Valley 
  as 
  if 
  to 
  join 
  those 
  in 
  that 
  region 
  that 
  

   show 
  a 
  tendency 
  to 
  curve 
  northward. 
  West 
  of 
  Pine 
  Canyon 
  the 
  

   strike 
  changes. 
  The 
  Pine 
  Canyon 
  anticline 
  shows 
  this 
  curving 
  

   structure. 
  It 
  is 
  a 
  well-defined 
  fold 
  with 
  broad 
  summits 
  and 
  sup- 
  

   ports 
  on 
  its 
  flanks 
  a 
  considerable 
  thickness 
  of 
  shale. 
  The 
  dip 
  ranges 
  

   from 
  10° 
  to 
  30°. 
  A 
  characteristic 
  appearance 
  of 
  the" 
  shale 
  and 
  dip 
  

   on 
  the 
  northeastern 
  flank 
  is 
  shown 
  in 
  PL 
  IV, 
  B 
  (p. 
  36). 
  North 
  of 
  

   this 
  fold 
  occur 
  a 
  number 
  of 
  minor 
  flexures 
  and 
  there 
  is 
  some 
  doubt 
  

   as 
  to 
  the 
  continuity 
  of 
  the 
  anticline 
  mapped 
  at 
  the 
  head 
  of 
  Oak 
  

   Canyon 
  with 
  the 
  well-defined 
  fold 
  near 
  the 
  coast 
  in 
  the 
  vicinity 
  of 
  

   Canada 
  Tortuga. 
  A 
  well-marked 
  low 
  anticline 
  occurs 
  near 
  the 
  coast 
  

   north 
  of 
  Lompoc 
  Landing 
  and 
  probably 
  continues 
  inland. 
  It 
  is 
  

   probable 
  that 
  either 
  one 
  anticline 
  of 
  considerable 
  importance 
  or 
  sev- 
  

   eral 
  small 
  component 
  flexures 
  start 
  across 
  the 
  mesa 
  between 
  Tangair 
  

   and 
  San 
  Antonio 
  Creek. 
  The 
  summit 
  of 
  all 
  these 
  anticlines 
  so 
  far 
  

  

  