﻿174 
  ^'EW 
  YORK 
  STATE 
  MUSEUM 
  

  

  In 
  the 
  southern 
  part 
  of 
  the 
  mapped 
  district 
  the 
  Lowville, 
  Black 
  

   River 
  and 
  Trenton 
  limestones 
  have 
  been 
  used 
  on 
  the 
  roads, 
  and 
  

   all 
  serve 
  the 
  purpose 
  very 
  well. 
  

  

  The 
  rock 
  of 
  the 
  district 
  best 
  fitted 
  for 
  road 
  metal 
  has, 
  as 
  yet, 
  not 
  

   been 
  utilized 
  at 
  all, 
  namely 
  that 
  of 
  the 
  trap 
  (diabase) 
  dikes. 
  There 
  

   is 
  no 
  better 
  road 
  metal 
  known 
  than 
  trap, 
  provided 
  it 
  be 
  unrotted, 
  

   and 
  the 
  wide 
  dikes 
  which 
  occur 
  on 
  Grindstone 
  island 
  are 
  capable 
  of 
  

   furnishing 
  a 
  considerable 
  supply 
  of 
  material, 
  much 
  of 
  which 
  is 
  cer- 
  

   tainly 
  quite 
  fresh. 
  The 
  material 
  is 
  in 
  large 
  demand 
  for 
  road-mak- 
  

   ing 
  purposes. 
  

  

  On 
  the 
  country 
  roads 
  to 
  the 
  eastward 
  of 
  .-Vlexandria 
  Bay, 
  on 
  which 
  

   travel 
  is 
  light, 
  the 
  easily 
  rotting, 
  aluminous 
  phases 
  of 
  the 
  fer- 
  

   ruginous 
  quartzite 
  (Grenville) 
  have 
  had 
  considerable 
  use 
  for 
  sur- 
  

   facing 
  the 
  roads, 
  and 
  answer 
  the 
  purpose 
  satisfactorily. 
  

  

  Granite 
  quarries 
  

  

  During 
  the 
  past 
  season 
  both 
  the 
  Picton 
  granite 
  and 
  the 
  Lauren- 
  

   tian 
  were 
  being 
  quarried 
  in 
  the 
  district. 
  The 
  former 
  rock 
  has 
  been 
  

   intermittently 
  quarried 
  on 
  Grindstone 
  island 
  for 
  a 
  number 
  of 
  years 
  

   and 
  has 
  been 
  considerably 
  used 
  for 
  structural 
  and 
  ornamental 
  pur- 
  

   poses, 
  both 
  locally 
  and 
  at 
  a 
  distance. 
  For 
  uses 
  for 
  which 
  pro- 
  

   nouncedly 
  red 
  granites 
  are 
  serviceable 
  it 
  compares 
  very 
  favorably 
  

   in 
  appearance 
  and 
  quality 
  with 
  the 
  other 
  red 
  granites 
  of 
  the 
  countr\\ 
  

   There 
  is 
  much 
  quite 
  uniform 
  material 
  available, 
  and 
  large 
  sized 
  

   blocks 
  can 
  be 
  quarried. 
  In 
  1908 
  none 
  of 
  the 
  Grindstone 
  island 
  

   quarries 
  were 
  being 
  worked, 
  though 
  quarrying 
  was 
  actively 
  in 
  

   progress 
  on 
  Picton 
  island, 
  where 
  the 
  chief 
  quarries 
  of 
  today 
  lie. 
  

  

  On 
  the 
  mainland, 
  a 
  short 
  distance 
  west 
  of 
  Alexandria 
  Bay, 
  active 
  

   quarrying 
  operations 
  are 
  in 
  progress 
  in 
  the 
  Laurentian 
  granite 
  

   gneiss. 
  At 
  the 
  location 
  the 
  rock 
  is 
  fairly 
  uniform 
  and 
  free 
  from 
  

   inclusions, 
  and 
  is 
  being 
  quarried 
  for 
  paving 
  blocks, 
  which 
  are 
  being 
  

   shipped 
  to 
  Chicago 
  for 
  "use. 
  Transportation 
  to 
  the 
  various 
  cities 
  

   on 
  the 
  Great 
  Lakes 
  is 
  of 
  course 
  cheap, 
  and 
  the 
  rock 
  seems 
  well 
  

   adapted 
  to 
  the 
  purpose 
  for 
  which 
  it 
  is 
  being 
  used. 
  

  

  Sandstone 
  quarries 
  

  

  Various 
  small 
  openings 
  have 
  been 
  made 
  in 
  the 
  Potsdam 
  sandstone 
  

   here 
  and 
  there 
  in 
  the 
  district, 
  for 
  very 
  local 
  building 
  and 
  flagging 
  

   purposes. 
  Just 
  beyond 
  the 
  Alexandria 
  sheet 
  edge, 
  to 
  the 
  east, 
  in 
  

   the 
  town 
  of 
  Hammond, 
  the 
  Potsdam 
  forms 
  a 
  long 
  scarp, 
  at 
  the 
  

   base 
  of 
  which 
  the 
  railroad 
  runs, 
  and 
  the 
  rock 
  here 
  is 
  quarried 
  largely 
  

  

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