﻿DETAILS 
  OF 
  THE 
  DEVELOPED 
  TEEKITORY. 
  1 
  05 
  

  

  anticline 
  is 
  believed 
  to 
  be 
  that 
  shown 
  on 
  the 
  map 
  (PL 
  I, 
  in 
  pocket); 
  

   from 
  the 
  evidence 
  offered 
  by 
  the 
  logs 
  of 
  the 
  Hill 
  and 
  Logan 
  wells 
  the 
  

   axis 
  of 
  the 
  anticline, 
  so 
  far 
  as 
  it 
  affects 
  the 
  oil-bearing 
  beds 
  of 
  this 
  part 
  

   of 
  the 
  field, 
  might 
  better 
  be 
  drawn 
  through 
  Hill 
  well 
  No. 
  1, 
  extending 
  

   Westward 
  and 
  eastward 
  (swinging 
  to 
  the 
  north 
  in 
  both 
  directions) 
  to 
  

   the 
  points 
  where 
  the 
  " 
  surface" 
  anticline 
  passes 
  from 
  the 
  Fernando 
  

   to 
  the 
  Monterey. 
  In 
  either 
  location, 
  however, 
  the 
  anticline 
  has 
  a 
  

   steeply 
  dipping 
  northern 
  flank 
  and 
  a 
  low-dipping 
  and 
  probably 
  undu- 
  

   lating 
  southern 
  flank. 
  

  

  A 
  fault, 
  clearly 
  seen 
  on 
  the 
  east 
  side 
  of 
  Cebada 
  Canyon 
  and 
  traced 
  

   by 
  deposits 
  of 
  asphaltum 
  over 
  portions 
  of 
  the 
  rest 
  of 
  its 
  course, 
  

   extends 
  from 
  a 
  point 
  a 
  short 
  distance 
  east 
  of 
  Cebada 
  Canyon 
  north- 
  

   westward 
  at 
  least 
  as 
  far 
  as 
  the 
  brea 
  deposits 
  near 
  Wise 
  & 
  Denigan 
  

   well 
  No. 
  1. 
  This 
  is 
  clearly 
  a 
  reverse 
  fault 
  in 
  the 
  Cebada 
  Canyon 
  

   region, 
  supposed 
  Monterey 
  diatomaceous 
  shale 
  being 
  thrust 
  up 
  on 
  the 
  

   north 
  over 
  Fernando 
  sandstone 
  which 
  lies 
  south 
  of 
  the 
  line, 
  the 
  dip 
  

   of 
  the 
  fault 
  plane 
  being 
  about 
  30° 
  toward 
  the 
  north. 
  Mr. 
  Orcutt 
  

   suggests 
  that 
  this 
  fault 
  probably 
  causes 
  the 
  difference 
  in 
  yield 
  be- 
  

   tween 
  Hill 
  wells 
  Nos. 
  2 
  and 
  3. 
  The 
  sand 
  is 
  struck 
  about 
  700 
  feet 
  

   lower 
  in 
  No. 
  3 
  than 
  in 
  No. 
  2, 
  and 
  is 
  barren 
  in 
  the 
  former 
  but 
  produc- 
  

   tive 
  in 
  the 
  latter. 
  The 
  dip 
  in 
  the 
  strata 
  (if 
  the 
  anticline 
  affecting 
  

   the 
  oil 
  sands 
  passes 
  south 
  of 
  well 
  No. 
  2) 
  might 
  account 
  for 
  the 
  differ- 
  

   ence 
  in 
  depth 
  of 
  the 
  oil 
  sand 
  in 
  the 
  two 
  wells, 
  but 
  it 
  alone 
  would 
  

   hardly 
  account 
  for 
  the 
  difference 
  iri 
  saturation 
  of 
  the 
  sands. 
  It 
  is 
  

   quite 
  possible 
  that 
  the 
  fault 
  (which 
  theoretically 
  emerges 
  somewhere 
  

   near 
  Hill 
  well 
  No. 
  4) 
  passes 
  downward 
  at 
  such 
  an 
  angle 
  as 
  to 
  cut 
  the 
  

   oil 
  sand 
  between 
  Hill 
  wells 
  Nos. 
  2 
  and 
  3, 
  throws 
  the 
  sand 
  down 
  on 
  the 
  

   north, 
  and, 
  while 
  acting 
  as 
  an 
  outlet 
  for 
  the 
  oil 
  in 
  the 
  sand 
  for 
  some 
  

   distance 
  on 
  its 
  northern 
  or 
  upper 
  side, 
  effectively 
  seals 
  up 
  the 
  trun- 
  

   cated 
  end 
  of 
  the 
  same 
  sand 
  on 
  its 
  southern 
  or 
  lower 
  side. 
  This 
  

   hypothesis 
  assumes 
  a 
  downthrow 
  on 
  the 
  north, 
  a 
  condition 
  exactly 
  

   opposite 
  to 
  that 
  shown 
  at 
  the 
  surface 
  in 
  Cebada 
  Canyon. 
  Alternate 
  

   upthrow 
  and 
  downthrow 
  on 
  the 
  same 
  side 
  of 
  a 
  single 
  fault 
  occurring 
  

   at 
  different 
  times 
  are 
  not 
  unusual 
  in 
  the 
  Coast 
  Ranges, 
  so 
  that 
  such 
  

   an 
  explanation 
  is 
  not 
  only 
  possible 
  but 
  probable. 
  To 
  conform 
  to 
  the 
  

   prevailing 
  conditions 
  the 
  downthrow 
  must 
  have 
  been 
  on 
  the 
  north 
  

   in 
  pre-Fernando 
  and 
  on 
  the 
  south 
  in 
  Fernando 
  or 
  post-Fernando 
  

   time. 
  

  

  The 
  logs 
  of 
  the 
  Wise 
  & 
  Denigan 
  wells 
  indicate 
  a 
  more 
  or 
  less 
  local 
  

   anticline 
  in 
  the 
  Monterey. 
  Its 
  axis 
  passes 
  near 
  well 
  No. 
  2 
  of 
  this 
  group, 
  

   and 
  probably 
  extends 
  in 
  an 
  east- 
  west 
  direction 
  parallel 
  to 
  the 
  major 
  

   lines 
  of 
  structure 
  in 
  the 
  hills 
  immediately 
  to 
  the 
  north. 
  This 
  occur- 
  

   rence 
  suggests 
  the 
  probable 
  gentle 
  folding 
  of 
  the 
  Monte 
  rey 
  in 
  the 
  

   region 
  south 
  of 
  the 
  Purisima 
  Hills, 
  in 
  a 
  manner 
  similar 
  to 
  that 
  which 
  

   takes 
  place 
  under 
  Burton 
  Mesa 
  farther 
  west. 
  

  

  