﻿4:04 
  G. 
  R. 
  Mansfield 
  — 
  The 
  Wasatch 
  and 
  Salt 
  Lake 
  

  

  ful 
  implications. 
  The 
  word 
  formation 
  is 
  also 
  applicable 
  

   because 
  of 
  the 
  varied 
  character 
  of 
  the 
  constituent 
  strata. 
  

  

  The 
  Salt 
  Lake 
  formation 
  is 
  exposed 
  in 
  the 
  Fort 
  Hall 
  

   Indian 
  Eeservation 
  and 
  in 
  each 
  of 
  the 
  quadrangles 
  

   studied 
  except 
  the 
  Cranes 
  Flat. 
  It 
  commonly 
  forms 
  

   foot-hill 
  slopes 
  along 
  some 
  of 
  the 
  larger 
  valleys, 
  as 
  on 
  

   the 
  western 
  side 
  of 
  Bear 
  Lake 
  Valley 
  in 
  the 
  Montpelier 
  

   quadrangle, 
  and 
  in 
  places 
  it 
  rises 
  high 
  on 
  the 
  flanks 
  of 
  

   the 
  mountains 
  as 
  in 
  the 
  vicinity 
  of 
  Georgetown 
  Canyon 
  

   in 
  the 
  same 
  quadrangle, 
  where 
  it 
  includes 
  elevations 
  

   greater 
  than 
  7,300 
  feet. 
  In 
  other 
  places 
  the 
  formation 
  

   covers 
  large 
  areas 
  of 
  moderately 
  high 
  hills, 
  as 
  southeast 
  

   of 
  Montpelier 
  or 
  north 
  of 
  Ovid 
  in 
  the 
  same 
  quadrangle, 
  

   where 
  it 
  occupies 
  more 
  than 
  a 
  township 
  and 
  has 
  a 
  verti- 
  

   cal 
  range 
  of 
  more 
  than 
  1,000 
  feet, 
  rising 
  to 
  an 
  elevation 
  

   of 
  7,156 
  feet. 
  Smaller 
  patches 
  occur 
  on 
  some 
  of 
  the 
  

   higher 
  hills 
  as 
  along 
  the 
  west 
  flank 
  of 
  Red 
  Mountain, 
  in 
  

   the 
  northeastern 
  part 
  of 
  the 
  Montpelier 
  quadrangle, 
  

   where 
  the 
  Pliocene 
  (?) 
  deposits 
  reach 
  an 
  elevation 
  of 
  

   7,750 
  feet. 
  

  

  As 
  most 
  commonly 
  encountered 
  the 
  Salt 
  Lake 
  forma- 
  

   tion 
  consists 
  of 
  light 
  gray 
  or 
  buff-colored 
  conglomerates 
  

   in 
  which 
  the 
  matrix 
  is 
  white, 
  relatively 
  soft, 
  loose 
  tex- 
  

   tured, 
  and 
  calcareous. 
  The 
  pebbles 
  are 
  generally 
  of 
  

   local 
  materials 
  and 
  rather 
  angular, 
  though 
  many 
  are 
  sub- 
  

   angular 
  or 
  even 
  rounded. 
  There 
  is 
  great 
  variation 
  in 
  

   size, 
  some 
  of 
  the 
  bowlders 
  being 
  four 
  or 
  five 
  feet 
  in 
  diam- 
  

   eter, 
  but 
  many 
  of 
  the 
  fragments 
  are 
  less 
  than 
  an 
  inch 
  in 
  

   diameter. 
  The 
  grayish 
  or 
  light 
  color 
  of 
  the 
  conglom- 
  

   erate 
  and 
  the 
  local 
  nature 
  and 
  angularity 
  of 
  the 
  pebbles 
  

   serve 
  in 
  general 
  to 
  distinguish 
  these 
  conglomerates 
  from 
  

   those 
  of 
  the 
  Wasatch 
  formation, 
  which 
  are 
  usually 
  red- 
  

   dish, 
  consist 
  of 
  better 
  rounded 
  materials, 
  and 
  are 
  largely 
  

   composed 
  of 
  older 
  Paleozoic 
  rocks. 
  It 
  is, 
  however, 
  

   locally 
  difficult 
  to 
  make 
  the 
  distinction. 
  Hills 
  covered 
  

   with 
  conglomerate 
  of 
  the 
  Salt 
  Lake 
  formation 
  are 
  strewn 
  

   with 
  countless 
  pebbles 
  and 
  bowlders 
  of 
  sandstone, 
  quartz- 
  

   ite, 
  limestone, 
  and 
  chert. 
  Ledges 
  are 
  few 
  and 
  poorly 
  

   exposed. 
  At 
  some 
  places, 
  as 
  in 
  the 
  lower 
  part 
  of 
  

   Georgetown 
  Canyon 
  in 
  the 
  Montpelier 
  quadrangle, 
  heavy 
  

   ledges 
  are 
  exposed 
  with 
  a 
  jumble 
  of 
  local 
  materials 
  of 
  

   various 
  sizes 
  and 
  shapes. 
  The 
  bedding 
  in 
  some 
  places 
  

   is 
  fairly 
  distinct, 
  but 
  there 
  is 
  little 
  marked 
  difference 
  in 
  

   the 
  coarseness 
  of 
  the 
  materials. 
  

  

  