﻿Richardson 
  — 
  Paleozoic 
  Section 
  in 
  Northern 
  Utah. 
  413 
  

  

  Brazer 
  limestone. 
  

  

  The 
  Madison 
  limestone 
  is 
  overlain 
  by 
  the 
  Brazer 
  limestone, 
  

   of 
  upper 
  Mississippian 
  age, 
  named 
  from 
  Brazer 
  Canyon 
  in 
  the 
  

   Crawford 
  Mountains, 
  6 
  miles 
  east 
  "by 
  north 
  of 
  Randolph, 
  where 
  

   it 
  is 
  well 
  exposed. 
  The 
  Brazer 
  for 
  the 
  most 
  part 
  is 
  a 
  massive 
  

   light-colored 
  impure 
  limestone, 
  but 
  it 
  varies 
  considerably 
  in 
  

   composition 
  especially 
  in 
  its 
  lower 
  part. 
  In 
  some 
  places 
  much 
  

   chert 
  is 
  present, 
  occurring 
  in 
  layers 
  a 
  few 
  inches 
  thick 
  and 
  also 
  in 
  

   irregular 
  bunches. 
  In 
  other 
  localities 
  chert 
  is 
  not 
  conspicuous, 
  

   and 
  the 
  lower 
  part 
  of 
  the 
  limestone 
  is 
  thin-bedded 
  to 
  shaly. 
  

   About 
  a 
  mile 
  east 
  of 
  Laketown 
  a 
  thin 
  bed 
  of 
  phosphate 
  rock, 
  

   formerly 
  assigned 
  to 
  the 
  Park 
  City 
  (Phosphoria) 
  formation, 
  

   occurs 
  in 
  the 
  shaly 
  lower 
  part 
  of 
  this 
  limestone. 
  The 
  Brazer 
  lime- 
  

   stone 
  is 
  more 
  or 
  less 
  sandy 
  throughout, 
  and 
  locally 
  considerable 
  

   sandstone 
  is 
  present. 
  In 
  the 
  Randolph 
  quadrangle 
  this 
  lime- 
  

   stone 
  ranges 
  from 
  800 
  to 
  1400 
  feet 
  in 
  thickness, 
  which 
  variation 
  

   suggests 
  an 
  erosional 
  unconformity 
  separating 
  the 
  upper 
  Missis- 
  

   sippian 
  from 
  the 
  overlying 
  Pennsylvanian 
  deposits. 
  Fossils 
  

   are 
  usually 
  scarce 
  in 
  the 
  Brazer 
  limestone. 
  Their 
  occurrence 
  

   is 
  characteristically 
  bunched, 
  and 
  collections 
  from 
  different 
  

   localities 
  often 
  show 
  quite 
  different 
  facies. 
  The 
  following 
  

   species, 
  identified 
  and 
  in 
  part 
  collected 
  by 
  G. 
  H. 
  Grirty, 
  were 
  

   obtained 
  in 
  the 
  Randolph 
  quadrangle 
  : 
  

  

  Fossils 
  from 
  Brazer 
  limestone, 
  Randolph 
  quadrangle 
  : 
  

   From 
  1^ 
  miles 
  east 
  of 
  Laketown, 
  near 
  center 
  of 
  sec. 
  32, 
  T. 
  13 
  N., 
  

   R. 
  6 
  E., 
  and 
  1 
  mile 
  south 
  in 
  N.E. 
  1/4 
  sec. 
  5, 
  T. 
  12 
  N., 
  R. 
  6 
  E. 
  : 
  

  

  Endothyra 
  Paileyi 
  Composita 
  sp. 
  

  

  Zaphrentis 
  sp. 
  Cliothyridina 
  hirsuta 
  

  

  Productus 
  aff. 
  pileiformis 
  Concardium 
  sp. 
  

  

  P. 
  JBiseriatus 
  ? 
  Aviculipecte?i 
  sp. 
  

  

  P. 
  an 
  , 
  gigantens 
  Astartella 
  nucleata 
  ? 
  

  

  Dielasma 
  formosum 
  ? 
  Euomphalus 
  sp. 
  

  

  Girtyella 
  turgida 
  Holopea 
  proutana 
  ? 
  

  

  Spirifer 
  bifurcatus 
  ? 
  Griffithides 
  sp. 
  

  

  Kirkbya 
  sp. 
  

  

  Paraparchites 
  carbonarius 
  ? 
  

  

  From 
  1^ 
  miles 
  east 
  of 
  Laketown, 
  near 
  center 
  of 
  W. 
  1/2 
  sec. 
  

   32, 
  T. 
  13 
  N., 
  R. 
  6 
  E., 
  in 
  shaly 
  limestone 
  near 
  the 
  base 
  of 
  the 
  for- 
  

   mation 
  : 
  

  

  Triplophyllum 
  sp. 
  Productus 
  altonensis 
  

  

  Michelinia 
  sp. 
  Martinia 
  ? 
  sp. 
  

  

  Rhipidomella 
  sp. 
  Spirifer 
  moorejieldanus 
  

  

  Chonetes 
  illinoisensis 
  var. 
  Platyceras 
  sp. 
  

  

  Productella 
  hirsutiformis 
  ? 
  Paraparchites 
  sp. 
  

  

  