﻿STRUCTURE 
  AND 
  CONDITIONS 
  AFFECTING 
  PRESENCE 
  OF 
  OIL. 
  89 
  

  

  the 
  crest 
  of 
  the 
  ridge 
  between 
  Canada 
  del 
  Gato 
  and 
  Solomon 
  Canyon 
  

   and 
  for 
  a 
  considerable 
  distance 
  to 
  the 
  east 
  is 
  coincident 
  with 
  the 
  

   highest 
  topographic 
  features. 
  In 
  general, 
  the 
  anticline 
  plunges 
  from 
  

   the 
  southeast 
  toward 
  the 
  northwest, 
  the 
  lowest 
  beds 
  along 
  its 
  axis 
  

   being 
  exposed 
  in 
  the 
  region 
  of 
  Canada 
  Arena. 
  The 
  Fernando 
  is 
  the 
  

   only 
  formation 
  exposed 
  along 
  the 
  entire 
  length 
  of 
  the 
  anticline. 
  

   With 
  the 
  exception 
  of 
  some 
  diatomaceous 
  beds 
  which 
  closely 
  resemble 
  

   and 
  were 
  at 
  first 
  mistaken 
  for 
  Monterey 
  shale, 
  the 
  rocks 
  exposed 
  are 
  

   sandstone 
  and 
  conglomerate. 
  

  

  The 
  northwestern 
  portion 
  of 
  the 
  fold, 
  from 
  the 
  Howard 
  Canyon 
  

   road 
  northwestward, 
  is 
  a 
  gentle 
  arch 
  with 
  dips 
  on 
  the 
  flanks 
  rarely 
  

   more 
  than 
  5°, 
  except 
  northwest 
  of 
  Los 
  Alamos, 
  where 
  the 
  dips 
  of 
  

   some 
  of 
  the 
  youngest 
  beds 
  exposed 
  change 
  abruptly 
  from 
  3° 
  or 
  4° 
  to 
  

   15°. 
  The 
  northwestern 
  extremity 
  of 
  the 
  anticline 
  fades 
  off 
  into 
  the 
  

   low 
  slopes 
  toward 
  the 
  Santa 
  Maria 
  Valley. 
  From 
  Howard 
  Canyon 
  

   eastward 
  the 
  southerly 
  dip 
  increases 
  rapidly 
  in 
  steepness 
  until 
  in 
  the 
  

   region 
  of 
  Canada 
  de 
  los 
  Coches 
  it 
  attains 
  a 
  slope 
  of 
  25° 
  to 
  35°, 
  the 
  

   steepest 
  dip 
  being 
  at 
  the 
  junction 
  of 
  the 
  canyon 
  last 
  named 
  and 
  

   Canada 
  Arena. 
  Although 
  the 
  southerly 
  dip 
  increases 
  in 
  steepness 
  

   toward 
  the 
  east 
  along 
  the 
  anticline, 
  the 
  dip 
  of 
  the 
  northern 
  slope 
  

   becomes 
  less, 
  ranging 
  from 
  12° 
  or 
  15° 
  in 
  the 
  region 
  of 
  Howard 
  Can- 
  

   yon 
  to 
  3° 
  or 
  4° 
  just 
  west 
  of 
  Canada 
  Arena, 
  and 
  finally 
  changing 
  to 
  a 
  

   gentle 
  southward 
  slope 
  in 
  the 
  region 
  of 
  Cuaslui 
  Creek, 
  thus 
  fading 
  

   into 
  the 
  southern 
  flank 
  of 
  one 
  of 
  the 
  folds 
  emanating 
  from 
  the 
  region 
  

   at 
  the 
  head 
  of 
  Round 
  Corral 
  Canyon 
  and 
  Asphaltum 
  Creek. 
  In 
  the 
  

   region 
  of 
  Cuaslui 
  Creek 
  the 
  flexure 
  is 
  therefore 
  not 
  a 
  typical 
  anti- 
  

   cline 
  in 
  the 
  regularly 
  accepted 
  sense, 
  the 
  horizontal 
  being 
  used 
  as 
  

   datum, 
  but 
  in 
  every 
  other 
  way 
  it 
  conforms 
  to 
  the 
  characters 
  of 
  such 
  

   a 
  structural 
  feature. 
  

  

  On 
  the 
  ridge 
  north 
  of 
  the 
  central 
  portion 
  of 
  Canada 
  del 
  Gato 
  and 
  

   extending 
  indefinitely 
  northwestward 
  out 
  into 
  the 
  Santa 
  Maria 
  Val- 
  

   ley 
  a 
  mile 
  or 
  so 
  southwest 
  of 
  Gary 
  is 
  a 
  low 
  anticline, 
  the 
  southeastern 
  

   end 
  of 
  which 
  merges 
  into 
  the 
  almost 
  horizontal 
  northern 
  flank 
  of 
  the 
  

   Gato 
  Ridge 
  anticline. 
  At 
  no 
  place 
  along 
  its 
  course 
  is 
  this 
  structural 
  

   feature 
  well 
  developed, 
  although 
  it 
  appears 
  to 
  be 
  fairly 
  persistent 
  

   for 
  a 
  considerable 
  distance. 
  

  

  Evidences 
  of 
  petroleum. 
  — 
  Very 
  little 
  surface 
  evidence 
  of 
  the 
  exist- 
  

   ence 
  of 
  petroleum 
  in 
  the 
  Gato 
  Ridge 
  anticline 
  is 
  to 
  be 
  had 
  along 
  its 
  

   course. 
  Near 
  its 
  axis 
  in 
  Cuaslui 
  Creek 
  and 
  north 
  of 
  the 
  head 
  of 
  

   Howard 
  Canyon, 
  however, 
  the 
  Fernando 
  shale 
  is 
  slightly 
  bitumi- 
  

   nous. 
  The 
  Pezzoni 
  well, 
  in 
  Canada 
  Arena; 
  the 
  Williams 
  well, 
  near 
  

   Canada 
  del 
  Gato, 
  1J 
  miles 
  west 
  of 
  the 
  Howard 
  Canyon 
  road, 
  and 
  the 
  

   Palmer 
  Oil 
  Company's 
  well 
  No. 
  1, 
  1 
  mile 
  west 
  of 
  the 
  lower 
  part 
  of 
  

   Canada 
  del 
  Gato, 
  all 
  approximately 
  a 
  mile 
  north 
  of 
  the 
  anticline, 
  

   offer 
  indisputable 
  evidence 
  of 
  the 
  presence 
  of 
  the 
  oil-bearing 
  rocks 
  

  

  