﻿544 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  siderable 
  area 
  in 
  the 
  eastern 
  central 
  part 
  of 
  the 
  town 
  as 
  shown 
  

  

  on 
  the 
  map. 
  Another 
  small 
  area 
  lies 
  about 
  four 
  miles 
  east 
  of 
  

  

  Thurman 
  station- 
  

   Series 
  3, 
  4 
  and 
  5 
  are 
  lacking 
  in 
  the 
  town 
  so 
  far 
  as 
  known 
  to 
  

  

  us 
  from 
  the 
  1897 
  work. 
  

   Series 
  6. 
  Glacial 
  drift 
  is 
  widespread 
  and 
  water-sorted 
  material 
  

  

  affords 
  interesting 
  terraces 
  along 
  the 
  Hudson. 
  

  

  Stonycreek 
  

  

  Stonycreek 
  is 
  another 
  large 
  township 
  that 
  extends 
  from 
  the 
  

   Hudson 
  to 
  the 
  Hamilton 
  co. 
  line. 
  Only 
  its 
  eastern 
  portion 
  was 
  

   studied 
  in 
  1897. 
  

  

  Series 
  1. 
  The 
  country 
  rock 
  so 
  far 
  as 
  certainly 
  found 
  in 
  place 
  

   in 
  the 
  eastern 
  part 
  of 
  this 
  town 
  is 
  gneiss, 
  except 
  for 
  one 
  out- 
  

   crop 
  of 
  gabbro. 
  No. 
  202 
  from 
  Bald 
  mountain, 
  is 
  a 
  rusty 
  brown, 
  

   coarsely 
  crystalline 
  variety, 
  with 
  lenses 
  of 
  quartz, 
  drawn 
  out 
  

   with 
  their 
  long 
  axes 
  parallel 
  and 
  presenting 
  a 
  series 
  of 
  thin 
  

   elongated 
  projections 
  on 
  the 
  weathered 
  surfaces. 
  The 
  quartzes 
  

   give 
  the 
  exposure 
  a 
  very 
  rough 
  exterior. 
  This 
  variety 
  of 
  gneiss 
  

   has 
  not 
  been 
  previously 
  observed 
  by 
  us 
  in 
  the 
  southern 
  Adiron- 
  

   dacks, 
  but 
  it 
  is 
  quite 
  abundant 
  in 
  the 
  northern 
  along 
  the 
  line 
  of 
  

   Clinton 
  and 
  Franklin 
  counties 
  with 
  Essex. 
  Mention 
  is 
  made 
  of 
  it 
  

   in 
  the 
  report 
  for 
  1895, 
  p. 
  582, 
  where 
  it 
  is 
  noted 
  in 
  northeastern 
  

   Jay, 
  Essex 
  co. 
  This 
  latter 
  specimen 
  exhibited 
  under 
  the 
  micro- 
  

   scope, 
  quartz, 
  microperthitic 
  orthoclase 
  and 
  microcline, 
  horn- 
  

   blende 
  and 
  a 
  little 
  biotite. 
  Prof. 
  Gushing 
  also 
  discovered 
  large 
  

   quantities 
  of 
  it 
  in 
  Franklin 
  Falls 
  township, 
  Franklin 
  co. 
  

   where 
  it 
  outcrops 
  as 
  a 
  rusty, 
  quartzose 
  gneiss. 
  On 
  the 
  south 
  side 
  

   of 
  Stonycreek 
  stream, 
  about 
  two 
  miles 
  below 
  Harrisburg, 
  no. 
  

   204 
  was 
  collected. 
  It 
  is 
  the 
  green, 
  syenitic 
  variety 
  of 
  gneiss, 
  

   often 
  referred 
  to 
  above 
  as 
  the 
  Whitehall 
  type. 
  The 
  same 
  variety 
  

   is 
  present 
  to 
  the 
  south. 
  

  

  Series 
  2. 
  But 
  one 
  outcrop 
  of 
  crystalline 
  limestone 
  was 
  noted 
  

   in 
  1897. 
  It 
  is 
  about 
  two 
  miles 
  southeast 
  of 
  Stonycreek 
  post- 
  

   office, 
  on 
  the 
  road 
  to 
  the 
  railway 
  station. 
  The 
  exposure 
  was 
  a 
  

   poor 
  one 
  and 
  may 
  have 
  been 
  a 
  boulder. 
  

  

  