﻿PEALE.] 
  PALEOZOIC 
  KOCKS 
  SECTIONS 
  OF 
  CARBONIFEROUS. 
  

  

  Carboniferous 
  strata. 
  

  

  11 
  

  

  In 
  the 
  region 
  of 
  the 
  Do- 
  

   lores 
  River. 
  District 
  of 
  

   1875. 
  

  

  On 
  the 
  Eagle 
  River. 
  Dis- 
  

   trict 
  of 
  1874.* 
  

  

  In 
  the 
  Elk 
  Mountains. 
  

   District 
  of 
  1873. 
  t 
  

  

  Park 
  RangeJ 
  west 
  of 
  

   South 
  Park 
  on 
  4-mile 
  

   Creek. 
  District 
  of 
  1873. 
  

  

  Pink 
  conglomeritic 
  sand- 
  

   stones 
  and 
  red 
  ^psifer- 
  

   ous 
  shales, 
  

  

  Thickness, 
  1,000 
  feet. 
  

  

  Micaceous 
  sandstones 
  aad 
  

   gypsiferouH 
  shales 
  of 
  

   variegated 
  colors, 
  

   with 
  thin 
  beds 
  of 
  lime- 
  

   stone 
  at 
  the 
  base. 
  

  

  Thickness, 
  2,000. 
  feet. 
  

  

  Fossils 
  — 
  Calamites 
  Suck- 
  

   ovii, 
  O. 
  gigas, 
  Stiff- 
  

   maria 
  fucoides, 
  Spiri- 
  

   fer, 
  Productjis, 
  Orhi- 
  

   cula. 
  

  

  Thickness, 
  2,000. 
  

  

  Maroon-colored 
  sand- 
  

   stones 
  and 
  shales, 
  with 
  

   conglomerate 
  at 
  base. 
  

   No 
  fossils. 
  

  

  Thickness 
  not 
  estimated. 
  

  

  Red, 
  pink, 
  and 
  maroon- 
  

   colored 
  sandstones, 
  gyp- 
  

   siferous 
  and 
  calcareous, 
  

   with 
  limegfones 
  in 
  thin 
  

   beds. 
  No 
  fossils. 
  

  

  Thickness 
  2,000 
  to 
  2,500 
  

   foot. 
  

  

  Shales 
  mostly 
  arenace- 
  

   ous 
  with 
  calcareous 
  and 
  

   gypsiferous 
  beds 
  at 
  the 
  

   top. 
  The 
  beds 
  are 
  gen- 
  

   erally 
  concealed; 
  debris 
  

   is 
  light 
  yellow 
  color. 
  

   No 
  fossils. 
  ' 
  

  

  Thickness, 
  3,500 
  feot. 
  

  

  White, 
  greenish, 
  and 
  red- 
  

   dish, 
  laminated, 
  mica- 
  

   ceous 
  sandstones 
  and 
  

   black 
  shales 
  with 
  

   patches 
  of 
  carbonace- 
  

   ous 
  material 
  ; 
  near 
  the 
  

   base 
  are 
  limestones, 
  § 
  

   with 
  Avicula, 
  Aviculo- 
  

   pecten, 
  Pleurophorus. 
  

  

  Thickness, 
  2,500 
  feet. 
  

  

  Yellowish, 
  gray, 
  and 
  red- 
  

   dish 
  sandstones 
  and 
  

   shales, 
  with 
  bands 
  of 
  

   limestone. 
  Lower 
  part 
  

   of 
  series 
  is 
  gray 
  and 
  

   greenish 
  micace 
  o 
  u 
  s 
  

   sandstones. 
  Fossils. 
  

  

  Third 
  layer 
  (top), 
  Lox- 
  

   onemia, 
  Productus 
  

   mil? 
  icatus, 
  Spirifer. 
  

  

  Second 
  layer. 
  — 
  Produc- 
  

   tus 
  muricatus, 
  Athyris 
  

   subtilita, 
  Rhy7ico?iella 
  

   asagensts, 
  Hemipro- 
  

   nites 
  crassus, 
  Terebra- 
  

   tula 
  bovidens, 
  Retzia 
  

   piinctulifera. 
  

  

  First 
  \a,yeT.—rProductus 
  

   muricatus. 
  

  

  Thickness, 
  1,300 
  to 
  2,000 
  

   feet. 
  

  

  Conglomeritic 
  sandstones, 
  

   green 
  aad 
  gray 
  mica- 
  

   ceous 
  saudrtones 
  an(5 
  

   shales, 
  bluish 
  lime- 
  

   stones 
  and 
  interlamin- 
  

   ated 
  sandstones. 
  Fossil:* 
  

   from 
  below. 
  

  

  Second 
  layer. 
  — 
  Productus- 
  

   nebrascensis, 
  Prudiictiis 
  

   prattenanus, 
  Productus 
  

   Semireticulatis, 
  Spirifer 
  

   opimus, 
  Pleurotomaria 
  

   taggarti. 
  

  

  First 
  layer. 
  — 
  Productus, 
  

   Spirifer, 
  Trilobites. 
  

  

  Thickness, 
  2,000 
  feet. 
  

  

  Limestone, 
  only 
  upper 
  

   part 
  showing 
  fos- 
  

   sils, 
  indistinct 
  and 
  not 
  

   determined. 
  Productus, 
  

   corals, 
  and 
  cri 
  uoidal 
  

   stems. 
  

  

  Thickness, 
  300 
  feet, 
  as 
  far 
  

   as 
  seen. 
  

  

  Limestone, 
  somewhat 
  

   shaly 
  above 
  but 
  mass- 
  

   ive 
  as 
  we 
  descend. 
  

  

  Thickness 
  about 
  500 
  feet. 
  

  

  Limestones 
  and 
  lime- 
  

   stone 
  shales. 
  Beds 
  so 
  

   distorted 
  that 
  thickness 
  

   not 
  positively 
  taken. 
  

   Fossils 
  of 
  Subcarbo- 
  

   niferous 
  type 
  not 
  yet 
  

   examined. 
  

  

  Blue 
  limestones 
  and 
  sand- 
  

   stone 
  shales, 
  1 
  i 
  m 
  e- 
  

   stones 
  predominating 
  ; 
  

   fossils 
  are 
  indistinct. 
  

  

  Thickness, 
  300 
  to 
  400 
  feot. 
  

  

  4,800 
  feet 
  to 
  5,000 
  feet. 
  5,000 
  feet. 
  

  

  4,000 
  to 
  4,500 
  feet. 
  

  

  4,300 
  feet 
  to 
  4,800. 
  

  

  " 
  See 
  sections 
  Report 
  of 
  1874, 
  pp. 
  115-119. 
  

   : 
  See 
  section 
  No. 
  2-2, 
  p. 
  243, 
  Report 
  1873. 
  

  

  tSee 
  pp. 
  01, 
  225, 
  230, 
  232, 
  Report 
  of 
  1873. 
  

  

  § 
  This 
  layer 
  may 
  possibly 
  be 
  Subcarboniferous. 
  

  

  