﻿8 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  1898 
  Kemp, 
  Newland 
  & 
  Hill. 
  Preliminary 
  Report 
  on 
  the 
  Geology 
  of 
  Hamil- 
  

  

  ton, 
  Warren, 
  and 
  Washington 
  Counties. 
  In 
  18th 
  Annual 
  Rep't 
  N. 
  Y. 
  

   State 
  Geologist. 
  

  

  1899 
  Kemp 
  & 
  Hill. 
  Preliminary 
  Report 
  on 
  the 
  Pre-Cambrian 
  Formations 
  in 
  

  

  Parts 
  of 
  Warren, 
  Saratoga, 
  Fulton, 
  and 
  Montgomery 
  Counties. 
  Ir, 
  

  

  19th 
  Annual 
  Rep't 
  N. 
  Y. 
  State 
  Geologist. 
  

   191 
  1 
  Miller, 
  W. 
  J. 
  Exfoliation 
  Domes 
  in 
  Warren 
  County, 
  N. 
  Y. 
  In 
  N. 
  1 
  

  

  State 
  Mus. 
  Bui. 
  149, 
  p. 
  187-94. 
  

   191 
  1 
  Miller, 
  W. 
  J. 
  Pre-Glacial 
  Course 
  of 
  the 
  Upper 
  Hudson 
  River. 
  In 
  

  

  Bui. 
  Geol. 
  Soc. 
  Amer., 
  22: 
  177-86. 
  

  

  ROCKS 
  OF 
  THE 
  REGION 
  

  

  GRENVILLE 
  SERIES 
  

  

  General 
  statements. 
  The 
  Grenville 
  series 
  comprises 
  the 
  oldesi 
  

   known 
  rocks 
  of 
  the 
  area. 
  They 
  consist 
  of 
  a 
  great 
  mass 
  of 
  highh 
  

   metamorphosed 
  and 
  crystallized 
  sediments 
  such 
  as 
  original 
  lime 
  

   stones, 
  sandstones, 
  and 
  shales 
  which 
  have 
  been 
  changed 
  to 
  crystal 
  

   line 
  limestone 
  or 
  marble, 
  quartzite, 
  and 
  various 
  gneisses. 
  Since 
  

   it 
  has 
  not 
  yet 
  been 
  definitely 
  determined 
  whether 
  these 
  rocks 
  should 
  

   be 
  classed 
  as 
  Archeozoic 
  or 
  Proterozoic 
  in 
  age, 
  the 
  noncommittal 
  

   term 
  " 
  Precambric 
  " 
  is 
  employed. 
  The 
  weight 
  of 
  evidence 
  is 
  on 
  the 
  

   side 
  of 
  their 
  Archeozoic 
  age 
  and 
  it 
  is 
  certain 
  that 
  they 
  can 
  not 
  

   be 
  of 
  late 
  Proterozoic 
  age. 
  

  

  Among 
  the 
  proofs 
  for 
  the 
  sedimentary 
  origin 
  of 
  these 
  rocks 
  

   within 
  the 
  quadrangle 
  are: 
  (1) 
  the 
  very 
  character 
  of 
  much 
  of 
  

   the 
  material 
  such 
  as 
  limestone 
  and 
  quartzite 
  which 
  can 
  not 
  possibly 
  

   have 
  been 
  of 
  igneous 
  origin; 
  (2) 
  the 
  arrangement 
  of 
  the 
  rocks 
  in 
  

   distinct 
  beds 
  of 
  widely 
  different 
  composition 
  and 
  often 
  sharply 
  al- 
  

   ternating; 
  and 
  (3) 
  the 
  common 
  occurrence 
  of 
  graphite 
  (crystal- 
  

   lized 
  carbon) 
  as 
  flakes 
  scattered 
  through 
  much 
  of 
  the 
  rock, 
  such 
  

   graphite 
  being 
  almost 
  certainly 
  of 
  organic 
  origin. 
  

  

  Grenville 
  strata 
  are 
  known 
  to 
  be 
  of 
  common 
  occurrence 
  through 
  

   out 
  the 
  Adirondack 
  mountain 
  region 
  and 
  this, 
  together 
  with 
  llu 
  

   facts 
  that 
  the 
  total 
  thickness 
  of 
  these 
  strata 
  is 
  very 
  great 
  and 
  thai 
  

   they 
  extend 
  over 
  not 
  only 
  the 
  Adirondack 
  area 
  but 
  also 
  a 
  vast 
  ex- 
  

   tent 
  of 
  Canada, 
  make 
  it 
  certain 
  that 
  those 
  very 
  ancient 
  strata 
  are 
  of 
  

   marine 
  origin. 
  It 
  is 
  evident 
  that 
  the 
  Grenville 
  sediments 
  were 
  laid 
  

   down 
  upon 
  an 
  ocean 
  floor 
  of 
  even 
  greater 
  age 
  but, 
  in 
  spite 
  of 
  twenty 
  

   years 
  of 
  painstaking 
  field 
  work 
  by 
  several 
  investigators, 
  no 
  trace 
  of 
  

   that 
  ancient 
  floor 
  has 
  certainly 
  been 
  recognized. 
  Nor 
  has 
  any 
  trace 
  

   of 
  that 
  very 
  ancient 
  land, 
  whose 
  wearing 
  down 
  by 
  erosion 
  furnished 
  

   the 
  Grenville 
  sediments, 
  been 
  found. 
  It 
  seems 
  probable 
  that 
  those 
  

  

  