﻿E. 
  B. 
  Branson 
  — 
  Geologic 
  Section 
  in 
  Missouri. 
  269 
  

  

  same 
  elevation 
  on 
  the 
  Missouri 
  River, 
  100 
  miles 
  west. 
  

   Westward 
  from 
  western 
  Cooper 
  County, 
  160 
  miles 
  from 
  

   St. 
  Louis 
  the 
  dip 
  is 
  steeper, 
  and 
  eastward 
  from 
  the 
  east- 
  

   ern 
  edge 
  of 
  "Warren 
  County, 
  40 
  miles 
  from 
  St. 
  Louis, 
  the 
  

   dip 
  is 
  great 
  enough 
  to 
  bring 
  Pennsylvanian 
  strata 
  to 
  the 
  

   650-foot 
  level 
  within 
  a 
  few 
  miles. 
  

  

  There 
  are 
  many 
  minor 
  folds 
  along 
  the 
  line 
  of 
  the 
  sec- 
  

   tion, 
  the 
  most 
  pronounced 
  of 
  which 
  is 
  at 
  Mineola, 
  in 
  

   Montgomery 
  County, 
  about 
  85 
  miles 
  west 
  of 
  St. 
  Louis. 
  

   Here 
  the 
  top 
  of 
  the 
  Jefferson 
  City 
  arises 
  200 
  feet 
  in 
  

   about 
  four 
  miles 
  from 
  southeast 
  to 
  northwest 
  and 
  dips 
  

   again 
  to 
  the 
  westward 
  several 
  feet 
  per 
  mile. 
  The 
  struc- 
  

   ture 
  is 
  a 
  sort 
  of 
  dome 
  which 
  the 
  section 
  does 
  not 
  cut 
  at 
  

   the 
  summit. 
  Numerous 
  minor 
  folds 
  that 
  rise 
  20 
  feet 
  or 
  

   more 
  are 
  not 
  uncommon 
  but 
  in 
  working 
  along 
  the 
  section 
  

   one 
  is 
  struck 
  by 
  the 
  general 
  horizontality 
  of 
  the 
  strata. 
  

  

  Rocks 
  from 
  Lower 
  Ordovician 
  to 
  Pennsylvanian 
  are 
  

   exposed 
  in 
  the 
  section 
  but 
  no 
  Silurian 
  is 
  present. 
  The 
  

   following 
  are 
  the 
  formations 
  present 
  in 
  a 
  belt 
  10 
  miles 
  

   wide, 
  with 
  about 
  average 
  and 
  maximum 
  thicknesses 
  in 
  

   that 
  belt. 
  The 
  minimum 
  thickness 
  of 
  all 
  excepting 
  the 
  

   Jefferson 
  City 
  dolomite 
  is 
  zero. 
  

  

  Pennsylvanian: 
  Pleasanton 
  formation 
  175 
  feet 
  

  

  Henrietta 
  formation 
  100 
  feet 
  

  

  Cherokee 
  shale 
  250 
  feet 
  

  

  Mississippian 
  : 
  Salem 
  limestone 
  Usually 
  absent 
  50 
  feet 
  

  

  Burlington 
  limestone 
  80 
  to 
  100 
  feet 
  190 
  feet 
  

   Chouteau 
  limestone 
  30 
  to 
  50 
  feet 
  70 
  feet 
  

   Sylamore 
  sandstone 
  8 
  inches 
  to 
  2 
  feet 
  70 
  feet 
  

  

  Devonian: 
  Snider 
  Creek 
  shale 
  20 
  feet 
  50 
  feet 
  

  

  Callaway 
  limestone 
  20 
  to 
  30 
  feet 
  60 
  feet 
  

  

  Mineola 
  limestone 
  10 
  to 
  20 
  feet 
  40 
  feet 
  

  

  Cooper 
  limestone 
  10 
  to 
  20 
  feet 
  30 
  feet 
  

  

  The 
  Cooper 
  and 
  Mineola 
  never 
  occur 
  in 
  the 
  

   same 
  section. 
  

  

  Ordovician: 
  Kimmswick 
  limestone 
  40 
  feet 
  80 
  feet 
  

  

  Joachim 
  dolomite 
  40 
  feet 
  70 
  feet 
  

  

  St. 
  Peter 
  sandstone 
  70 
  feet 
  200 
  feet 
  

  

  Jefferson 
  City 
  dolomite 
  More 
  than 
  200 
  feet 
  

  

  exposed 
  and 
  the 
  

   bottom 
  not 
  reached. 
  

  

  