﻿^0 
  

  

  REPORT 
  UNITED 
  STATES 
  GEOLOGICAL 
  SURVEY. 
  

  

  two 
  miles 
  above 
  its 
  moath, 
  as 
  the 
  typical 
  locality 
  of 
  the 
  group. 
  Dr. 
  

   Hayden 
  visited 
  this 
  locality 
  in 
  1870, 
  and 
  recognized 
  the 
  Dakota 
  group, 
  

   and 
  gives 
  a 
  section 
  of 
  the 
  rocks.* 
  

  

  Clarence 
  King, 
  on 
  map 
  II, 
  Green 
  Eiver 
  Basin, 
  at 
  the 
  mouth 
  of 
  Henry's 
  

   Fork, 
  has 
  the 
  Dakota 
  group 
  colored, 
  and 
  on 
  Powell's 
  map 
  of 
  Green 
  

   Eiver 
  the 
  same 
  area 
  is 
  colored 
  as 
  the 
  Henry's 
  Fork 
  group.t 
  

  

  The 
  following 
  table 
  will 
  show 
  the 
  similarity, 
  in 
  lithological 
  structure 
  : 
  

  

  New 
  Mexico 
  and 
  Arizona, 
  

   Upper 
  Missouri 
  region, 
  Meek 
  and. 
  Professor 
  Newberry, 
  

   Hayden. 
  t 
  lower 
  division 
  of 
  Creta- 
  

  

  ceous. 
  5 
  

  

  Reddish, 
  yellowish, 
  and 
  occa- 
  

   sionally 
  white 
  sandstones, 
  

   with, 
  at 
  places, 
  alternations 
  of 
  

   various 
  colored 
  clays 
  and 
  beds 
  

   and 
  seams 
  of 
  impure 
  lignite, 
  

   also 
  silicified 
  wood, 
  and 
  great 
  

   numbers 
  of 
  leaves 
  of 
  the 
  high- 
  

   er 
  types 
  of 
  dicotyledonous 
  

   trees. 
  

  

  Yellow 
  and 
  brown 
  sand- 
  

   stones 
  and 
  green 
  shales 
  

   in 
  New 
  Mexico. 
  

  

  White 
  and 
  yellowish 
  sand- 
  

   stones, 
  green, 
  blue, 
  and 
  

   gray 
  shales, 
  with 
  impure 
  

   lignite 
  and 
  carbonaceous 
  

   shales, 
  also 
  thin 
  bands 
  of 
  

   siliceous 
  limestone 
  in 
  

   places, 
  in 
  Arizona. 
  

  

  Plateau 
  Province 
  of 
  Major 
  

   Powell, 
  Henry's 
  Fork 
  

  

  group. 
  II 
  

  

  Sandstones, 
  bad-land 
  

   rocks, 
  conglomerates, 
  

   and 
  shales, 
  with 
  carbona- 
  

   ceous 
  shales 
  and 
  lignitic 
  

   coal. 
  

  

  The 
  following 
  list 
  compares 
  the 
  fossils 
  of 
  the 
  Henry's 
  Fork 
  Group 
  

   with 
  those 
  from 
  Newberry's 
  lower 
  division. 
  None 
  of 
  Powell's 
  Henry 
  

   f"'ork 
  group 
  fossils 
  come 
  from 
  the 
  typical 
  locality. 
  

  

  NewberrylT, 
  New 
  Mexico, 
  lower 
  division 
  

   Cretaceous 
  (Dakota 
  groap). 
  

  

  PUcatida 
  arenaria, 
  M. 
  

  

  Oryphcea 
  f 
  

  

  Exogyra 
  columbella, 
  M. 
  

  

  OervilUa 
  ? 
  

   Pinna 
  

  

  Prionotropis 
  Woolgari, 
  {Ammoni- 
  

   tes 
  pericarinatus, 
  H. 
  & 
  M.) 
  

  

  Howell 
  * 
  

  

  Plateau 
  Province, 
  Henry's 
  Fork 
  

   group. 
  

  

  PUcatuJa 
  Jiydrotheca, 
  White. 
  

   Oryphcea 
  PitcJieri, 
  Morton. 
  

   Exogyra 
  Iceviuscula, 
  Eoemer. 
  

   Exogyra 
  ponderosa, 
  Eoemer. 
  

   Ostrea 
  prudetitia. 
  White. 
  

   Inoceramus 
  KoicelU, 
  White. 
  

   Avicula 
  linguiformis, 
  Shumard. 
  

  

  CamptonectiBS 
  platessa, 
  White. 
  

   Undetermined 
  concMfers, 
  White. 
  

  

  Cardium 
  ? 
  

  

  CaUista 
  Deu-eyi, 
  Meek 
  & 
  Hayden. 
  

  

  A 
  rca 
  ? 
  

  

  * 
  Report 
  United 
  States 
  Geological 
  Survey 
  1870, 
  pp. 
  60, 
  61. 
  

  

  t 
  King's 
  map 
  is 
  dated 
  November 
  15, 
  1675, 
  and 
  Powell's 
  map 
  bears 
  date 
  1873. 
  The 
  latter 
  

   is 
  evidently 
  a 
  mistake, 
  as 
  the 
  atlas 
  containing 
  it 
  bears 
  date 
  J 
  876, 
  and 
  was 
  issued 
  during 
  

   the 
  year. 
  KiTig's 
  map, 
  therefore, 
  has 
  the 
  priority. 
  

  

  t 
  Exploration 
  of 
  the 
  Yellowstone 
  and 
  Missouri 
  Rivers, 
  p 
  14. 
  

  

  § 
  Ives's 
  Colorado 
  Exploring 
  Expedition 
  and 
  Macomb's 
  Expedition 
  to 
  Junction 
  of 
  Grand 
  

   and 
  Green. 
  

  

  II 
  Geology 
  of 
  Uinta 
  Mountains. 
  

  

  II 
  Exploring 
  Expedition 
  from 
  Santa 
  F6 
  to 
  Junction 
  of 
  Grand 
  and 
  Green 
  Rivers 
  ; 
  Descrip- 
  

   tions 
  of 
  Cretaceous 
  Fossils, 
  by 
  F. 
  B. 
  Meek, 
  pp. 
  121, 
  122. 
  

  

  ** 
  Geology 
  of 
  Uinta 
  Mountains 
  ; 
  Invertebrate 
  Paleontologyby, 
  C. 
  A. 
  White, 
  M. 
  D., 
  pp. 
  

   94,95. 
  

  

  