﻿262 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  thin 
  blue 
  sandstones 
  (XXX 
  D 
  5 
  ) 
  which 
  have 
  the 
  lithologic 
  characters 
  

   of 
  the 
  Hamilton. 
  In 
  places 
  they 
  contain 
  the 
  characteristic 
  fauna 
  of 
  

   the 
  coarse 
  Hamilton 
  deposits 
  as 
  Spirifer 
  granulosus 
  (Con.) 
  H. 
  & 
  C, 
  

   Spirifer 
  mucronatus 
  (Con.) 
  Bill., 
  Chonetes 
  coronata 
  (Con.) 
  Hall, 
  etc. 
  

   the 
  complete 
  list 
  being: 
  

  

  1 
  Chonetes 
  coronata 
  (Con.) 
  Hall 
  (a) 
  

  

  2 
  Tropidoleptus 
  carinatus 
  (Con.) 
  Hall 
  (c) 
  

  

  3 
  Spirifer 
  mucronatus 
  (Con.) 
  Bill. 
  (r) 
  

  

  4 
  S. 
  sculptilis 
  Hall 
  (rr) 
  

  

  5 
  S, 
  granulosus 
  (Con.) 
  H. 
  & 
  C. 
  (rr) 
  

  

  6 
  Camarotoechia 
  prolifica 
  (Hall) 
  H. 
  & 
  C. 
  (c) 
  

  

  7 
  C. 
  sappho 
  (Hall) 
  H. 
  & 
  C. 
  (rr) 
  

  

  8 
  Orthothetes 
  chemungensis 
  (Con.) 
  H. 
  & 
  C. 
  

  

  var. 
  arctostriata 
  Hall 
  (c) 
  

  

  9 
  Glyptodesma 
  erectum 
  (Con.) 
  Hall 
  (c) 
  

  

  10 
  Nucula 
  belUstriata 
  (Con.) 
  Hall 
  (rr) 
  

  

  11 
  Nyassa 
  suoalata 
  Hall 
  (r) 
  

  

  12 
  Platyceras 
  bucculentum 
  Hall 
  (?) 
  (rr) 
  

  

  The 
  rocks 
  of 
  this 
  locality 
  are 
  undoubtedly 
  in 
  the 
  Hamilton 
  

   formation. 
  Near 
  the 
  highway 
  corners 
  one 
  mile 
  to 
  the 
  west 
  of 
  

   the 
  Hamilton 
  rocks 
  is 
  red 
  sandstone 
  of 
  the 
  Oneonta 
  formation 
  

   while 
  below 
  are 
  greenish 
  shales 
  and 
  sandstones, 
  in 
  which 
  no 
  

   fossils 
  were 
  found, 
  that 
  are 
  probably 
  in 
  the 
  Sherburne 
  formation. 
  

   The 
  red 
  sandstone 
  is 
  150 
  feet 
  higher 
  than 
  the 
  Hamilton 
  exposure 
  

   to 
  the 
  east 
  and 
  supposing 
  the 
  dip 
  to 
  be 
  100 
  feet 
  a 
  mile 
  to 
  the 
  

   west 
  which 
  is 
  apparently 
  all 
  that 
  it 
  is, 
  then 
  the 
  red 
  sandstone 
  

   is 
  approximately 
  250 
  feet 
  stratigraphically 
  above 
  the 
  Hamilton. 
  

  

  On 
  top 
  of 
  the 
  hill 
  one 
  half 
  mile 
  east 
  of 
  South 
  Westerlo 
  is 
  a 
  

   prominent 
  ledge 
  of 
  greenish 
  red 
  sandstone 
  (XXX 
  D 
  6 
  ) 
  five 
  feet 
  in 
  

   thickness 
  which 
  on 
  the 
  weathered 
  surface 
  has 
  a 
  dark 
  red 
  color. 
  

   Above 
  is 
  a 
  ledge 
  of 
  clear 
  blue, 
  thin 
  sandstone 
  which 
  is 
  cross- 
  

   bedded. 
  On 
  the 
  Geologic 
  map 
  of 
  New 
  York 
  the 
  exposures 
  of 
  red 
  

   rock 
  just 
  described 
  are 
  mapped 
  as 
  in 
  the 
  Hamilton 
  formation 
  

   which 
  is 
  represented 
  as 
  covering 
  all 
  of 
  the 
  country 
  to 
  the 
  east 
  of 
  

   Basic 
  creek, 
  its 
  top 
  occurring 
  on 
  the 
  hills 
  considerably 
  west 
  of 
  

   the 
  creek 
  and 
  South 
  Westerlo. 
  Along 
  Basic 
  creek 
  above 
  and 
  

  

  