﻿GEOLOGY 
  OF 
  WASHINGTON, 
  WARREN 
  COUNTIES, 
  ETC. 
  543 
  

  

  of 
  Beaver 
  pond 
  bore 
  N 
  10 
  E; 
  another 
  about 
  a 
  mile 
  southeast 
  

   of 
  the 
  lower 
  end 
  of 
  Brant 
  lake 
  was 
  N 
  15 
  E, 
  and 
  the 
  third 
  

   near 
  Burnt 
  pond 
  was 
  N 
  10 
  E. 
  They 
  coincide 
  with 
  other 
  obser- 
  

   vations 
  in 
  the 
  region. 
  

  

  Abandoned 
  lake 
  bottoms, 
  now 
  meadows 
  or 
  swamps 
  have 
  been 
  

   noted 
  in 
  several 
  instances 
  in 
  the 
  valleys. 
  

  

  Economic. 
  The 
  quarry 
  near 
  Horicon 
  is 
  said 
  to 
  have 
  furnished 
  

   some 
  stone 
  for 
  the 
  state 
  capitol, 
  and 
  its 
  dark 
  groundmass 
  with 
  

   mottlings 
  of 
  pink 
  feldspar 
  ought 
  to 
  afford 
  an 
  attractive 
  stone. 
  

   A 
  well 
  has 
  been 
  drilled 
  to 
  a 
  depth 
  it 
  is 
  said 
  of 
  over 
  2000 
  feet 
  

   through 
  the 
  gneisses 
  in 
  the 
  extreme 
  northwest 
  corner 
  of 
  the 
  

   town 
  in 
  the 
  hope 
  of 
  finding 
  petroleum. 
  Some 
  rumors 
  have 
  spread 
  

   that 
  traces 
  of 
  oil 
  have 
  been 
  discovered 
  but 
  it 
  is 
  manifestly 
  absurd 
  

   to 
  look 
  for 
  liquid 
  or 
  gaseous 
  hydrocarbons 
  in 
  these 
  old 
  metamor- 
  

   phosed 
  crystalline 
  rocks. 
  

  

  Thurman 
  

  

  Thurman 
  is 
  a 
  large 
  township 
  that 
  extends 
  from 
  the 
  valley 
  of 
  

   the 
  Hudson, 
  westward 
  almost 
  20 
  miles 
  to 
  the 
  Hamilton 
  co. 
  

   line. 
  It 
  contains 
  several 
  peaks 
  of 
  considerable 
  altitude 
  — 
  Mt 
  

   Blue 
  for 
  example 
  reaching 
  2925 
  — 
  and 
  between 
  the 
  ridges 
  are 
  

   deeply 
  incised 
  valleys. 
  

  

  In 
  1897 
  only 
  the 
  eastern 
  portion 
  was 
  traversed 
  so 
  that 
  a 
  full 
  

   report 
  on 
  the 
  town 
  can 
  not 
  be 
  made 
  with 
  the 
  data 
  now 
  in 
  hand. 
  

  

  Series 
  1. 
  The 
  gneisses 
  form 
  the 
  larger 
  part 
  of 
  the 
  eastern 
  

   portion 
  of 
  the 
  township 
  and 
  present 
  much 
  the 
  same 
  characters 
  as 
  

   those 
  to 
  the 
  north 
  and 
  south. 
  They 
  are 
  hornblendic, 
  so 
  far 
  as 
  one 
  

   can 
  determine 
  them 
  with 
  the 
  eye, 
  but 
  under 
  the 
  microscope 
  they 
  

   would 
  doubtless 
  show 
  the 
  usual 
  green 
  pyroxene 
  and 
  occasional 
  

   hypersthene, 
  with 
  microperthite 
  and 
  more 
  or 
  less 
  quartz, 
  charac- 
  

   teristic 
  of 
  the 
  Whitehall 
  type. 
  

  

  Series 
  2. 
  The 
  crystalline 
  limestones 
  and 
  ophicalcites 
  and 
  their 
  

   associated 
  rocks 
  are 
  quite 
  widely 
  developed 
  and 
  have 
  indeed 
  

   received 
  some 
  attention 
  as 
  sources 
  of 
  ornamental 
  stone. 
  a 
  The 
  

   series 
  projects 
  into 
  Thurman 
  from 
  Johnsburg 
  and 
  forms 
  a 
  con- 
  

  

  oG. 
  P. 
  Merrill 
  Ophiolite 
  of 
  Thurman, 
  Warren 
  co. 
  N. 
  Y.— 
  Amer. 
  jour, 
  sci., 
  Mar. 
  

   1889, 
  p. 
  189. 
  j 
  

  

  