﻿52 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  That 
  they 
  were 
  deposited 
  along 
  the 
  ice 
  margin 
  is 
  clearly 
  established 
  

   by 
  the 
  presence 
  of 
  kames 
  and 
  large 
  drift 
  boulders 
  along 
  the 
  western 
  

   edge 
  which 
  prove 
  an 
  ice 
  contact 
  front 
  here. 
  The 
  gradual 
  down- 
  

   ward 
  slope 
  of 
  the 
  sand 
  plains 
  toward 
  the 
  west 
  is 
  to 
  be 
  accounted 
  

   for 
  by 
  the 
  gradual 
  lowering 
  of 
  the 
  marginal 
  lake 
  level 
  as 
  the 
  ice 
  

   retreated. 
  

  

  The 
  depressions 
  within 
  the 
  sand 
  plains 
  may 
  be 
  explained 
  in 
  either 
  

   one 
  of 
  two 
  ways. 
  They 
  may 
  have 
  been 
  due 
  to 
  isolation 
  of 
  ice 
  

   masses 
  from 
  the 
  ice 
  margin 
  (possibly 
  sometimes 
  as 
  icebergs) 
  which 
  

   were 
  partially 
  or 
  completely 
  buried 
  under 
  the 
  delta 
  sand 
  to 
  be 
  

   melted 
  later 
  thus 
  causing 
  the 
  development 
  of 
  the 
  depressions, 
  or 
  

   they 
  may 
  have 
  been 
  due 
  to 
  unequal 
  deposition 
  of 
  the 
  delta 
  materials 
  

   whereby 
  some 
  places 
  were 
  not 
  brought 
  up 
  to 
  the 
  general 
  level. 
  The 
  

   depth, 
  steepness 
  of 
  sides 
  and 
  irregular 
  shapes 
  of 
  the 
  depressions 
  

   cause 
  the 
  writer 
  to 
  favor 
  the 
  first 
  view 
  to 
  account 
  for 
  most 
  of 
  them. 
  

  

  Kames 
  

  

  Kames, 
  which 
  are 
  hillocks 
  of 
  crudely 
  stratified 
  materials 
  de- 
  

   posited 
  at 
  the 
  ice 
  edge, 
  are 
  rather 
  abundantly 
  represented 
  except 
  on 
  

   the 
  east 
  side 
  over 
  the 
  sand 
  plain 
  area. 
  There 
  is 
  no 
  group 
  of 
  large 
  

   kames 
  such 
  as 
  those 
  of 
  Park 
  and 
  Sperry 
  hills 
  within 
  the 
  Boonville 
  

   quadrangle, 
  or 
  Hke 
  those 
  of 
  the 
  Remsen 
  quadrangle 
  described 
  in 
  a 
  

   former 
  report. 
  Probably 
  the 
  best 
  example 
  of 
  a 
  single 
  kame 
  is 
  the 
  

   one 
  %. 
  of 
  a 
  mile 
  southeast-south 
  of 
  Greig. 
  It 
  is 
  remarkable 
  for 
  its 
  

   steepness 
  and 
  symmetry 
  of 
  form 
  and 
  shows 
  a 
  hight 
  of 
  at 
  least 
  150 
  

   feet. 
  Many 
  kames 
  are 
  located 
  along 
  the 
  steep 
  western 
  front 
  of 
  the 
  

   great 
  sand 
  terrace 
  above 
  described, 
  especially 
  . 
  from 
  Lyons 
  Falls 
  

   northward. 
  Other 
  good 
  examples 
  may 
  be 
  found 
  from 
  south 
  of 
  Port 
  

   Leyden 
  to 
  north 
  of 
  Lyons 
  Falls 
  along 
  the 
  railroad 
  ; 
  south 
  and 
  west 
  

   of 
  Talcottville 
  ; 
  along 
  the 
  road 
  from 
  Turin 
  to 
  Houseville 
  ; 
  south 
  and 
  

   east 
  of 
  Martinsburg; 
  and 
  even 
  on 
  the 
  highland 
  southwest 
  of 
  

   Mohawk 
  hill. 
  Frequently, 
  as 
  in 
  the 
  locality 
  last 
  mentioned, 
  there 
  

   are 
  long 
  low 
  ridges 
  of 
  stratified 
  materials 
  called 
  eskers 
  associated 
  

   with 
  the 
  kames. 
  

  

  No 
  doubt 
  kames 
  were 
  also 
  formed 
  over 
  the 
  region 
  now 
  covered 
  

   by 
  the 
  sand 
  plains, 
  but 
  as 
  the 
  ice 
  gradually 
  retreated 
  from 
  the 
  

   valley 
  the 
  kames 
  formed 
  along 
  the 
  ice 
  edge 
  were 
  buried 
  under 
  the 
  

   deep 
  delta 
  deposits. 
  Only 
  those 
  along 
  the 
  western 
  margin 
  of 
  the 
  

   great 
  delta 
  deposit 
  were 
  left 
  uncovered. 
  Partially 
  buried 
  kames 
  

   in 
  the 
  midst 
  of 
  a 
  sand 
  plain 
  are 
  finely 
  exhibited 
  around 
  Forestport 
  

   on 
  the 
  Remsen 
  quadrangle. 
  The 
  sands 
  are 
  there 
  comparatively 
  

  

  