﻿606 
  Forty-seventh 
  Report 
  on 
  the 
  State 
  Museum. 
  

  

  are 
  exposures 
  of 
  basal 
  conglomerates 
  which 
  were 
  described 
  by 
  

   Steele 
  in 
  1823.* 
  His 
  description 
  is 
  as 
  follows: 
  

  

  "Pudding 
  stone. 
  — 
  This 
  conglomerated 
  mass 
  of 
  rocks 
  is 
  found 
  

   in 
  the 
  town 
  of 
  Greenfield, 
  not 
  far 
  from 
  its 
  south 
  line 
  on 
  the 
  

   southeast 
  side 
  of 
  the 
  Kayaderosseras 
  mountains, 
  resting 
  upon 
  the 
  

   primitive 
  rocks. 
  It 
  consists 
  of 
  rounded 
  pebbles 
  of 
  quartz 
  from 
  

   the 
  size 
  of 
  a 
  small 
  shot 
  to 
  that 
  of 
  a 
  man's 
  head, 
  united 
  into 
  one 
  

   common 
  mass 
  by 
  a 
  kind 
  of 
  coarse 
  ferruginous 
  sand. 
  It 
  extends 
  

   along 
  the 
  mountains 
  to 
  no 
  great 
  distance, 
  but 
  fragments 
  of 
  it 
  lie 
  

   scattered 
  in 
  all 
  directions, 
  and, 
  indeed, 
  are 
  found 
  along 
  the 
  whole 
  

   extent 
  of 
  the 
  south 
  line 
  of 
  the 
  town 
  of 
  Greenfield, 
  and 
  in 
  various 
  

   other 
  places. 
  At 
  present 
  I 
  am 
  not 
  acquainted 
  with 
  any 
  other 
  

   locality 
  of 
  the 
  rock." 
  

  

  I 
  have 
  found 
  another 
  notable 
  exposure 
  of 
  this 
  sort 
  of 
  rock 
  

   one 
  and 
  a 
  half 
  miles 
  west 
  of 
  Mosherville 
  just 
  north 
  of 
  the 
  turn- 
  

   pike. 
  One 
  of 
  the 
  best 
  outcrops 
  is 
  shown 
  in 
  plates 
  2 
  and 
  3. 
  

  

  The 
  lowest 
  beds 
  of 
  this 
  congh 
  merate 
  consist 
  of 
  a 
  breccia 
  of 
  

   angular 
  to 
  sub-angular 
  fragments 
  of 
  the 
  underlying 
  crystalline 
  

   rock, 
  which 
  is 
  very 
  quartzose 
  and 
  light 
  colored; 
  and 
  quartz 
  in 
  a 
  

   matrix 
  of 
  quartz 
  sand. 
  The 
  surface 
  of 
  the 
  crystalline 
  rocks 
  

   beneath 
  this 
  breccia 
  is 
  exceedingly 
  irregular 
  and 
  the 
  derivation 
  

   of 
  the 
  fragments 
  is 
  illustrated 
  in 
  every 
  stage. 
  

  

  The 
  relations 
  of 
  these 
  conglomerates 
  to 
  overlying 
  members 
  of 
  

   the 
  formation 
  are 
  exhibited 
  in 
  the 
  slope 
  southward 
  by 
  quite 
  an 
  

   extensive 
  series 
  of 
  exposures. 
  The 
  coarse 
  conglomerate 
  gives 
  

   place 
  rather 
  abruptly 
  to 
  a 
  conglomerate 
  or 
  conglomeratic 
  sand- 
  

   stone 
  with 
  quartz 
  pebbles 
  up 
  to 
  an 
  inch 
  in 
  diameter, 
  which 
  grades 
  

   upward 
  into 
  a 
  calcareous 
  sandstone 
  containing 
  very 
  small 
  pebbles 
  

   and 
  coarse 
  sand 
  grains. 
  To 
  the 
  south 
  lie 
  verv 
  arenaceous 
  lime- 
  

   stones 
  which 
  may 
  be 
  in 
  immediate 
  succession, 
  but 
  it 
  is 
  pr< 
  bable 
  

   th 
  it 
  the 
  Hoffman's 
  Ferry 
  faul 
  r 
  passes 
  between, 
  cutting 
  off 
  the 
  

   in 
  termed 
  -ate 
  series 
  of 
  typical 
  Potsdam 
  sandstone 
  beds 
  which 
  

   are 
  exposed 
  to 
  t 
  e 
  west 
  ami 
  to 
  the 
  east 
  of 
  th 
  s 
  locality. 
  

  

  The 
  exposur 
  s 
  to 
  the 
  ea^r, 
  are 
  a 
  mile 
  south 
  of 
  East 
  Galway, 
  

   where 
  in 
  the 
  northern 
  slope 
  of 
  a 
  depression 
  draining 
  out 
  to 
  the 
  

   southeastward 
  there 
  is 
  a 
  complete 
  series 
  of 
  exposures 
  from 
  Cal- 
  

   ciferous 
  sandstones 
  to 
  crystalline 
  rocks. 
  The 
  Potsdam 
  sandstones 
  

  

  * 
  Geology 
  of 
  Saratoga 
  county. 
  Memoirs 
  of 
  Board 
  of 
  Agriculture 
  of 
  the 
  State 
  of 
  New 
  York, 
  

   •- 
  1 
  2, 
  p 
  53. 
  

  

  