﻿Titicaca 
  Island 
  and 
  Adjoining 
  Areas. 
  211 
  

  

  Section 
  D. 
  

  

  North 
  end 
  of 
  Copacabana 
  Peninsula, 
  measured 
  along 
  

  

  the 
  lake 
  shore. 
  Strike 
  JV. 
  4-0° 
  W; 
  dip 
  KZ.30 
  . 
  

  

  Feet 
  

  

  1. 
  Shales 
  and 
  thin 
  sandstones 
  with 
  three 
  beds 
  of 
  carbona- 
  

   ceous 
  shale, 
  3', 
  4', 
  4' 
  in 
  thickness. 
  Approximately 
  one- 
  

   half 
  of 
  each 
  bed 
  consists 
  of 
  coal 
  of 
  commercial 
  value 
  200 
  

  

  2. 
  Sandstone 
  ; 
  gray- 
  white 
  ; 
  cross-bedded 
  60 
  

  

  3. 
  Shales, 
  sandy 
  ; 
  alternating 
  with 
  very 
  thin 
  (i"—\i") 
  beds 
  

  

  of 
  drab 
  and 
  gray 
  sandstone 
  ; 
  rare 
  streaks 
  of 
  carbonaceous 
  

   material 
  35 
  

  

  4. 
  Shales, 
  black 
  ; 
  alternating 
  with 
  gray-brown 
  sandstone 
  in 
  

   lenses, 
  and 
  cross-bedded 
  shale, 
  in 
  part 
  carbonaceous 
  ; 
  

   with 
  some 
  thin 
  (^"±) 
  lenses 
  of 
  true 
  coal. 
  At 
  top 
  is 
  l'± 
  

  

  of 
  impure 
  coal 
  20 
  

  

  5. 
  Shale 
  ; 
  black, 
  lumpy, 
  in 
  part 
  stained 
  by 
  limonite 
  ; 
  breaks 
  

  

  in 
  flakes 
  ; 
  contains 
  lenses 
  of 
  gray-brown 
  sandstone 
  20 
  

  

  6. 
  Sandstone 
  ; 
  yellow-gray 
  ; 
  in 
  6*-10* 
  beds 
  9 
  

  

  7. 
  Shale 
  : 
  black 
  to 
  drab 
  ; 
  like 
  No. 
  9 
  20 
  

  

  8. 
  Sandstone; 
  yellow-gray 
  4 
  

  

  9. 
  Shales 
  ; 
  drab 
  ; 
  thin-bedded 
  (J") 
  concretionary 
  with 
  wavy 
  

   surfaces 
  _. 
  6 
  

  

  10. 
  Sandstone 
  ; 
  yellow-brown 
  ; 
  thin 
  bedded 
  (1/-4") 
  ; 
  cross- 
  

   " 
  bedded, 
  micaceous, 
  lumpy, 
  with 
  mud 
  concretions 
  and 
  

  

  sun-cracks 
  ; 
  surface 
  of 
  sandstone 
  Avavy 
  and 
  beautifully 
  

   ripple-marked. 
  Shales 
  ; 
  drab, 
  sandy, 
  lumpy, 
  intricately 
  

   folded 
  on 
  minute 
  scale 
  30 
  

  

  11. 
  Sandstone 
  ; 
  yellow; 
  in 
  beds 
  4 
  "-10" 
  thick; 
  interbedded 
  

   with 
  drab, 
  arenaceous 
  shales. 
  Bedding 
  very 
  uneven 
  and 
  

   surface 
  of 
  each 
  stratum 
  reveals 
  overlapping 
  flakes 
  15 
  

  

  12. 
  Shales 
  ; 
  brown, 
  yellow 
  and 
  drab 
  ; 
  with 
  uneven, 
  flaky 
  

   surfaces 
  25 
  

  

  13. 
  Sandstone 
  ; 
  white 
  to 
  gray 
  ; 
  cross-bedded 
  ; 
  medium-fine 
  

   grain 
  ; 
  in 
  beds 
  4-6' 
  30 
  

  

  Section 
  E. 
  

  

  Coal 
  Mine 
  at 
  ITampupata, 
  Copacabana 
  Peninsula. 
  

  

  Measured 
  by 
  K. 
  C. 
  Heald. 
  Feet 
  

  

  1. 
  Sandstone 
  ; 
  medium-grained 
  quartz, 
  red 
  and 
  white 
  ; 
  

   cement 
  green 
  ; 
  general 
  color 
  green 
  ; 
  soft 
  10 
  

  

  2. 
  Sandstone 
  ; 
  fine 
  to 
  medium 
  ; 
  rounded 
  red 
  and 
  white 
  

   quartz 
  ; 
  cement 
  a 
  maroon 
  color 
  ; 
  general 
  color 
  purplish 
  ; 
  

   soft 
  . 
  .. 
  _ 
  . 
  100 
  

  

  3. 
  Sandstone 
  ; 
  fine-grained 
  ; 
  rounded 
  quartz 
  ; 
  slightly 
  cross- 
  

   bedded 
  ; 
  beds 
  about 
  1' 
  thick 
  5 
  

  

  4. 
  Shale 
  ; 
  gray 
  3 
  

  

  5. 
  Sandstone 
  ; 
  medium-grained, 
  brownish 
  white 
  ; 
  soft 
  ; 
  

  

  cross-bedded, 
  massive 
  6 
  

  

  