﻿4-0 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  assigning 
  the 
  exposures 
  at 
  the 
  crossroads 
  at 
  South 
  Greenfield 
  to 
  the 
  

   base 
  of 
  the 
  Little 
  Falls 
  dolomite, 
  then 
  the 
  section 
  closes 
  in 
  beds 
  not 
  

   far 
  from 
  the 
  top. 
  The 
  section 
  has 
  already 
  been 
  published 
  and 
  is 
  

   here 
  repeated, 
  numbered 
  in 
  continuation 
  of 
  the 
  Theresa 
  section 
  

   already 
  given. 
  

  

  FEET 
  INCHES 
  

  

  40 
  Exposures 
  at 
  Hoyt 
  quarry 
  : 
  hard, 
  blue 
  to 
  black, 
  

   subcrystalline 
  to 
  crystalline 
  magnesian 
  lime- 
  

   stone, 
  largely 
  of 
  dolomite 
  rhombs 
  with 
  calcite 
  

   cement; 
  1 
  foot 
  from 
  the 
  top 
  is 
  a 
  Cryptozoon 
  

   reef 
  bed, 
  and 
  the 
  section 
  rests 
  on 
  another 
  such 
  

   bed, 
  which 
  is 
  the 
  same 
  as 
  the 
  one 
  shown 
  by 
  the 
  

   roadside 
  (plates 
  3 
  and 
  4) 
  ; 
  the 
  rock 
  is 
  partly 
  

   thin 
  and 
  partly 
  thick 
  bedded 
  ; 
  some 
  of 
  the 
  layers 
  

   show 
  coarsely 
  crystalline 
  calcite 
  cement, 
  giving 
  

   large 
  glittering 
  cleavage 
  faces 
  on 
  freshly 
  broken 
  

   surfaces 
  ; 
  trilobites, 
  gastropods 
  and 
  Lingulella 
  

  

  are 
  found 
  throughout 
  25 
  .... 
  

  

  One-third 
  of 
  a 
  mile 
  north 
  of 
  the 
  Hoyt 
  quarry 
  is 
  

   another 
  quarry 
  face 
  by 
  the 
  roadside, 
  capped 
  by 
  

   the 
  same 
  Cryptozoon 
  layer 
  which 
  forms 
  the 
  base 
  

   of 
  the 
  Hoyt 
  quarry 
  section, 
  but 
  was 
  not 
  included 
  

   in 
  the 
  25 
  feet 
  of 
  that 
  section. 
  

  

  39 
  Dark 
  blue, 
  subcrystalline, 
  magnesian 
  limestone 
  

   full 
  of 
  Cryptozoon 
  ; 
  frequent 
  black, 
  oolitic 
  

   grains 
  1 
  5 
  

  

  38 
  Massive 
  beds 
  of 
  blue, 
  finely 
  crystalline, 
  magnesian 
  

   limestone, 
  with 
  occasional 
  sand 
  grains; 
  trilo- 
  

   bite 
  fragments 
  5 
  5 
  

  

  37 
  Thin 
  bed 
  of 
  calcareous 
  sandstone, 
  weathering 
  to 
  

  

  brown, 
  rotten 
  stone 
  5 
  

  

  36 
  Two 
  beds 
  of 
  dark 
  blue, 
  crystalline, 
  magnesian 
  

  

  limestone 
  with 
  some 
  sand 
  grains 
  2 
  5 
  

  

  35 
  Layer 
  of 
  dark 
  gray, 
  calcareous 
  sandstone 
  1 
  7 
  

  

  34 
  Light 
  colored, 
  vitreous 
  sandstone 
  with 
  films 
  of 
  

  

  darker, 
  calcareous 
  material 
  1 
  3 
  ' 
  

  

  33 
  Dark 
  colored 
  sandstone 
  with 
  calcareous 
  cement 
  4 
  

  

  Four-tenths 
  of 
  a 
  mile 
  northeast 
  of 
  this 
  are 
  two 
  

   considerable 
  cuts 
  along 
  the 
  railroad 
  in 
  which 
  the 
  

   following 
  section 
  is 
  shown 
  (plate 
  7). 
  The 
  hiatus 
  

   is 
  estimated 
  at 
  20 
  

  

  