﻿348 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  Feet 
  

  

  A 
  8 
  A 
  dark, 
  impure 
  limestone 
  which 
  weathers 
  to 
  a 
  buff, 
  3=386 
  

   porous 
  sandstone. 
  The 
  erosion 
  of 
  the 
  Onondaga 
  

   limestone 
  has 
  left 
  this 
  formation 
  well 
  exposed 
  at 
  

   Clarksville 
  both 
  at 
  the 
  foot 
  of 
  the 
  upper 
  gorge 
  and 
  

   the 
  top 
  of 
  the 
  lower 
  and 
  fossils 
  may 
  easily 
  be 
  col- 
  

   lected 
  from 
  it. 
  Schoharie 
  grit. 
  

  

  A 
  8 
  Blackish, 
  arenaceous 
  shales 
  with 
  Spirophyton 
  cau- 
  121=383 
  

   da-galli 
  (Van.) 
  Hall. 
  The 
  upper 
  five 
  or 
  six 
  feet 
  of 
  

   this 
  formation 
  is 
  a 
  very 
  heavy 
  sandstone, 
  somewhat 
  

   calcareous, 
  which 
  seems 
  to 
  gradually 
  pass 
  into 
  

   Schoharie 
  grit. 
  Only 
  that 
  however 
  which 
  contains 
  

   fossils 
  has 
  been 
  referred 
  to 
  the 
  Schoharie. 
  Esopus 
  

   shales 
  or 
  cauda-galli 
  grit. 
  

  

  A 
  7 
  A 
  brownish 
  black, 
  crystalline 
  sandstone 
  which 
  1=262 
  

   weathers 
  to 
  a 
  light 
  brown 
  porous 
  sandstone. 
  In 
  

   the 
  creek 
  about 
  a 
  mile 
  below 
  the 
  village 
  this 
  rock 
  

   is 
  almost 
  black 
  and 
  at 
  the 
  same 
  distance 
  north 
  of 
  

   it 
  numbers 
  of 
  the 
  weathered 
  blocks 
  may 
  be 
  found, 
  

   while 
  about 
  one 
  mile 
  northeast 
  of 
  the 
  village 
  it 
  

   forms 
  the 
  floor 
  of 
  a 
  terrace 
  from 
  a 
  quarter 
  to 
  a 
  half 
  

   mile 
  in 
  width. 
  Oriskany 
  sandstone. 
  

  

  A* 
  A 
  massive 
  light 
  gray 
  limestone 
  containing 
  many 
  20=261 
  

   fossils 
  among 
  which 
  are 
  large 
  numbers 
  of 
  Aspklo- 
  

   crinus 
  seutelliformis 
  Hall. 
  As 
  this 
  formation 
  was 
  

   not 
  well 
  exposed 
  in 
  the 
  line 
  of 
  the 
  regular 
  section, 
  

   the 
  measurement 
  was 
  taken 
  about 
  a 
  half 
  mile 
  north 
  

   of 
  it 
  at 
  Mr 
  Gilbert 
  Kniffens. 
  Becraft 
  or 
  Upper 
  

   Pentamerns 
  limestone. 
  

  

  A 
  B 
  A 
  gray, 
  shaly 
  fossiliferous 
  limestone 
  with 
  occa- 
  127=241 
  

   eional 
  beds 
  of 
  massive 
  limestone 
  forming 
  a 
  gen- 
  

   tle 
  slope. 
  On 
  account 
  of 
  the 
  shaly 
  character 
  of 
  this 
  

   formation 
  a 
  good 
  exposure 
  is 
  seldom 
  obtained. 
  An 
  

   exception 
  to 
  this 
  however 
  is 
  mentioned 
  on 
  Shaly 
  

   limestone. 
  

  

  