﻿256 
  J. 
  Barrell 
  — 
  The 
  Piedmont 
  Terraces 
  

  

  tends 
  southward 
  for 
  four 
  or 
  ftve 
  miles. 
  It 
  consists 
  of 
  

   broad 
  flat 
  hills 
  — 
  rolling 
  dissection 
  — 
  deep 
  till 
  — 
  good 
  farm- 
  

   ing 
  land. 
  To 
  the 
  north 
  the 
  hilltops 
  slope 
  from 
  1,640 
  up 
  

   to 
  1,700 
  feet. 
  Very 
  much 
  less 
  land 
  at 
  this 
  approximate 
  

   level 
  because 
  this 
  is 
  the 
  outer 
  margin 
  of 
  the 
  1,650-1,700 
  

   foot 
  plain 
  — 
  also 
  shows 
  greater 
  age. 
  Thinner 
  soil 
  — 
  

   poorer 
  farming 
  land. 
  The 
  glacier 
  felt 
  the 
  decline 
  in 
  ele- 
  

   vation 
  from 
  the 
  Cornwall 
  to 
  the 
  Goshen 
  plain 
  and 
  

   dropped 
  till 
  over 
  the 
  northern 
  end 
  of 
  the 
  latter.' 
  ' 
  The 
  

   difference 
  in 
  the 
  topography 
  here 
  noted 
  strongly 
  im- 
  

   pressed 
  itself 
  on 
  Professor 
  Barrell 
  and 
  was 
  an 
  important 
  

   factor 
  in 
  determining 
  the 
  probable 
  ages 
  of 
  the 
  terraces. 
  

   Expressed 
  in 
  terms 
  of 
  topography 
  it 
  may 
  be 
  said 
  that 
  

   broad 
  flat-topped 
  and 
  elongated 
  hills 
  are 
  not 
  so 
  char- 
  

   acteristic 
  of 
  the 
  region 
  northwest 
  of 
  the 
  Goshen 
  ' 
  ' 
  shore- 
  

   line" 
  as 
  they 
  are 
  of 
  the 
  region 
  southeast 
  of 
  it. 
  The 
  

   explanation 
  of 
  this 
  difference 
  is 
  brought 
  out 
  in 
  later 
  sec- 
  

   tions. 
  

  

  The 
  Connecticut 
  terraces 
  are 
  widest 
  in 
  the 
  eastern 
  part 
  

   of 
  the 
  state 
  and 
  gradually 
  narrow 
  in 
  a 
  southwesterly 
  di- 
  

   rection 
  until 
  they 
  attain 
  their 
  least 
  extension 
  in 
  the 
  west- 
  

   ern 
  part 
  of 
  the 
  state, 
  as 
  shown 
  by 
  fig. 
  1. 
  It 
  has 
  been 
  

   thought 
  that 
  it 
  would 
  be 
  interesting 
  for 
  comparative 
  

   purposes 
  to 
  give 
  profiles 
  embracing 
  the 
  lower 
  terraces 
  of 
  

   these 
  two 
  localities. 
  Both 
  are 
  represented 
  among 
  Pro- 
  

   fessor 
  BarrelFs 
  profiles, 
  but 
  those 
  here 
  shown 
  have 
  been 
  

   redrawn 
  to 
  cover 
  larger 
  areas 
  from 
  somewhat 
  different 
  

   points 
  of 
  view. 
  The 
  large 
  profile, 
  pi. 
  V, 
  and 
  fig. 
  2 
  show 
  

   the 
  terraces 
  at 
  intermediately 
  situated 
  localities. 
  

  

  Figure 
  7 
  shows 
  the 
  projected 
  profile 
  of 
  the 
  Stonington, 
  

   southern 
  quarter 
  of 
  the 
  Moosup, 
  and 
  western 
  quarter 
  of 
  

   the 
  Charlestown 
  (R. 
  I.) 
  quadrangles, 
  the 
  direction 
  of 
  

   view 
  — 
  N 
  25° 
  E 
  — 
  being 
  parallel 
  to 
  the 
  shore. 
  Profiles 
  of 
  

   live 
  interfluvial 
  ridges 
  in 
  the 
  Stonington 
  quadrangle 
  have 
  

   been 
  published 
  by 
  Miss 
  Laura 
  Hatch 
  and 
  for 
  descrip- 
  

   tions 
  one 
  may 
  refer 
  to 
  her 
  article 
  "Marine 
  Terraces 
  in 
  

   Southeastern 
  Connecticut." 
  14 
  The 
  200 
  and 
  500 
  foot 
  

   levels 
  are 
  well 
  marked 
  and 
  are 
  interpreted 
  as 
  represent- 
  

   ing 
  stillstands 
  of 
  the 
  land 
  through 
  considerable 
  intervals 
  

   of 
  time. 
  Levels 
  at 
  300 
  and 
  400 
  feet 
  may 
  be 
  recognized 
  

   but 
  are 
  not 
  so 
  strongly 
  developed. 
  The 
  integration 
  into 
  

   an 
  even 
  sky-line 
  of 
  the 
  summits 
  which 
  mark 
  the 
  500 
  foot 
  

   level 
  is 
  very 
  noticeable. 
  It 
  is 
  largely 
  due 
  to 
  the 
  presence 
  

   of 
  elongated 
  flat-topped 
  hills 
  or 
  ridges, 
  and 
  such 
  ridges 
  

   are 
  quite 
  characteristic 
  of 
  the 
  entire 
  region. 
  

  

  14 
  This 
  Journal, 
  44, 
  319-320, 
  1917. 
  

  

  