﻿546 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  Day 
  

  

  Day 
  lies 
  west 
  of 
  Hadley, 
  and, 
  like 
  it, 
  is 
  cut 
  by 
  the 
  Sacondaga 
  

   into 
  two 
  unequal 
  parts. 
  Only 
  gneisses 
  and 
  glacial 
  drift 
  have 
  

   been 
  as 
  yet 
  noted. 
  No. 
  208 
  is 
  a 
  coarsely 
  foliated 
  gneiss 
  of 
  the 
  

   mineralogy 
  of 
  a 
  biotite-granite 
  so 
  far 
  as 
  one 
  can 
  determine 
  with 
  

   the 
  eye 
  alone. 
  Observations 
  as 
  yet 
  relate 
  only 
  to 
  the 
  eastern 
  

   part 
  of 
  the 
  township 
  and 
  to 
  the 
  highway 
  along 
  the 
  Sacondaga. 
  

  

  Luzerne 
  

  

  Luzerne 
  lies 
  along 
  the 
  east 
  bank 
  of 
  the 
  Hudson, 
  opposite 
  Had- 
  

   ley, 
  but 
  extending 
  farther 
  south. 
  It 
  is 
  a 
  narrow 
  township 
  in 
  

   an 
  east 
  and 
  west 
  line, 
  being 
  but 
  three 
  to 
  four 
  miles 
  across. 
  The 
  

   township 
  contains, 
  so 
  far 
  as 
  we 
  have 
  observed, 
  gneisses, 
  paleozoic 
  

   strata 
  and 
  glacial 
  deposits. 
  

  

  Series 
  1. 
  The 
  gneisses 
  cover 
  all 
  the 
  town, 
  except 
  for 
  a 
  small 
  

   outlier 
  of 
  the 
  paleozoic 
  sediments 
  near 
  Corinth. 
  The 
  gneisses 
  

   are 
  chiefly 
  of 
  the 
  Whitehall 
  type. 
  They 
  vary 
  from 
  quite 
  massive 
  

   and 
  poorly 
  foliated 
  varities, 
  like 
  no. 
  212 
  and 
  207, 
  to 
  very 
  finely 
  

   foliated 
  varieties, 
  like 
  215. 
  These 
  rocks 
  present 
  in 
  thin 
  section 
  

   quartz, 
  microperthite, 
  more 
  or 
  less 
  plagioclase, 
  brown 
  hornblende 
  

   and 
  sometimes 
  green 
  augite. 
  No. 
  215 
  is 
  a 
  deceptive 
  rock, 
  being 
  

   light 
  green 
  in 
  color, 
  thinly 
  foliated 
  and 
  resembling 
  a 
  crushed 
  

   and 
  gneissoid 
  anorthosite. 
  It 
  is, 
  however, 
  an 
  aggregate 
  of 
  finely 
  

   granulated 
  quartz, 
  microperthite 
  and 
  plagioclase, 
  with 
  prominent 
  

   lenses 
  of 
  quartz, 
  which 
  one 
  can 
  not 
  help 
  regarding 
  as 
  recemented 
  

   granules, 
  and 
  which 
  are 
  together 
  larger 
  than 
  any 
  original 
  quartz 
  

   crystal. 
  At 
  206 
  garnetiferous, 
  biotite 
  gneiss 
  was 
  recorded 
  in 
  the 
  

   field. 
  

  

  The 
  peculiar 
  rounded 
  knob, 
  as 
  viewed 
  from 
  the 
  south, 
  known 
  

   as 
  the 
  Potash 
  Kettle, 
  is 
  a 
  most 
  remarkable 
  topographical 
  form. 
  

   It 
  is 
  a 
  coarsely 
  foliated 
  gneise, 
  no. 
  212. 
  

  

  Series 
  4. 
  A 
  small 
  northerly 
  outlier 
  of 
  paleozoics 
  is 
  found 
  in 
  

   the 
  Hudson 
  valley 
  near 
  Corinth. 
  .The 
  beds 
  cover 
  only 
  a 
  very 
  

   small 
  area 
  and 
  are 
  a 
  remnant 
  of 
  a 
  former 
  extension 
  of 
  the 
  large 
  

   southern 
  exposure. 
  The 
  best 
  exhibition 
  of 
  the 
  beds 
  is 
  on 
  the 
  

  

  