﻿II] 
  General 
  Geology 
  : 
  Jackson 
  Eocene 
  89 
  

  

  horizontal 
  layers 
  of 
  white 
  clay 
  pebbles, 
  and 
  near 
  the 
  top, 
  some 
  

   iron 
  concretions. 
  

  

  The 
  red 
  lands 
  with 
  very 
  marked 
  topographic 
  relief 
  continue 
  

   for 
  about 
  6 
  miles 
  from 
  Homer, 
  on 
  the 
  Homer-Minden 
  road. 
  

   The 
  iron 
  concretions 
  then 
  commence 
  to 
  be 
  conglomeritic, 
  and 
  

   about 
  8 
  miles 
  from 
  Homer 
  large 
  quartz 
  pudding-stones 
  are 
  quite 
  

   numerous. 
  The 
  first 
  really 
  noticeable 
  alluvial 
  valley 
  is 
  that 
  of 
  

   Crow 
  creek 
  which 
  is 
  about 
  half 
  a 
  mile 
  wide. 
  Judging 
  from 
  the 
  

   fields 
  seen 
  here 
  it 
  seems 
  capable 
  of 
  producing 
  good 
  oats. 
  

  

  (Union 
  Parish) 
  

  

  The 
  northern 
  part 
  of 
  Union 
  parish 
  is 
  very 
  heavily 
  covered 
  

   with 
  sands 
  in 
  part 
  belonging 
  to 
  the 
  underlying 
  Eocene 
  strata 
  

   and 
  in 
  part 
  to 
  the 
  Lafayette 
  gravels 
  which 
  are 
  found 
  over 
  many 
  

   of 
  the 
  hillsides. 
  Very 
  fine 
  exposures 
  of 
  red 
  and 
  white 
  sands 
  are 
  

   to 
  be 
  seen 
  in 
  the 
  deep 
  gullies 
  around 
  Walnut 
  home 
  and 
  Wal- 
  

   lace's 
  store. 
  

  

  On 
  the 
  eastern 
  side 
  of 
  the 
  parish 
  is 
  a 
  low 
  strip 
  of 
  pine 
  flats, 
  

   presumably 
  belonging 
  to 
  the 
  Port 
  Hudson 
  period. 
  These 
  are 
  

   well 
  developed 
  on 
  the 
  Ouachita 
  city 
  — 
  Farmersville 
  road 
  from 
  3 
  

   to 
  8 
  miles 
  west 
  of 
  Ouachita 
  city 
  and 
  on 
  the 
  Alabama-Marion 
  

   road 
  to 
  within 
  5^ 
  miles 
  from 
  Marion. 
  

  

  D'Arbonne. 
  — 
  Along 
  the 
  D'Arbonne 
  and 
  its 
  branches 
  the 
  

   country 
  is 
  very 
  broken, 
  a 
  relief 
  of 
  about 
  150 
  being 
  quite 
  com- 
  

   mon. 
  Mosley's 
  bluff 
  is 
  an 
  abruptly 
  sloping 
  hill 
  80 
  feet 
  high. 
  

   The 
  soil 
  is 
  composed 
  of 
  sand 
  with 
  some 
  iron 
  sandstone. 
  Near 
  

   the 
  top 
  are 
  layers 
  of 
  red 
  sands 
  separated 
  by 
  occasional 
  thin 
  lay- 
  

   ers 
  of 
  clay. 
  Wherever 
  the 
  clay 
  laj^ers 
  occur 
  the)^ 
  give 
  rise 
  to 
  a 
  

   spring 
  horizon. 
  Around 
  Farmersville 
  high 
  sandy 
  hills 
  covered 
  

   with 
  ferruginous 
  sandstone 
  and 
  gravel, 
  lie 
  about 
  in 
  the 
  northwest- 
  

   ern 
  part 
  of 
  the 
  parish. 
  Toward 
  Junction 
  city 
  the 
  relief 
  is 
  much 
  

   less 
  marked. 
  The 
  land 
  is 
  rather 
  low 
  and 
  the 
  soil 
  a 
  pure 
  grained, 
  

   silty 
  sand. 
  

  

  Jackson 
  Stage 
  

  

  Distribution 
  

  

  The 
  map. 
  — 
  The 
  general 
  distribution 
  of 
  this 
  terrane 
  is 
  shown 
  

   on 
  the 
  accompanying 
  geological 
  map 
  of 
  the 
  State. 
  It 
  is 
  based 
  

  

  