﻿RTY-SEVENTR 
  REPORT 
  ON 
  TEE 
  STATE 
  MUSEUM. 
  

  

  Jackson, 
  Am. 
  Jour. 
  Sci., 
  ii, 
  XII, 
  73 
  ; 
  Forbes' 
  Phil. 
  Mag., 
  iv, 
  XXIX, 
  

   340; 
  W. 
  P. 
  Blake, 
  Trans. 
  Amer. 
  Inst. 
  Min. 
  Eng., 
  Feb., 
  1892.) 
  

   Blake 
  states 
  that 
  it 
  occurs 
  along 
  the 
  contact 
  of 
  a 
  dyke 
  of 
  greenstone 
  

   with 
  Laurentian 
  gneiss, 
  but 
  we 
  found 
  no 
  trap. 
  It 
  is 
  rather 
  along 
  

   a 
  crushed 
  or 
  faulted 
  strip, 
  with 
  a 
  little 
  crystalline 
  limestone 
  

   forming 
  one 
  wall, 
  and 
  the 
  principal 
  veinstone 
  a 
  mass 
  of 
  chloritic 
  

   alteration 
  products, 
  through 
  which 
  are 
  distributed, 
  brown 
  tour- 
  

   maline 
  and 
  quartz. 
  The 
  eupyrchroite 
  was 
  early- 
  exhausted. 
  

   Reference 
  may 
  also 
  be 
  made 
  to 
  a 
  small 
  prospect 
  southwest 
  of 
  

   Crown 
  Point 
  station 
  on 
  the 
  Delaware 
  and 
  Hudson 
  railroad, 
  

   which 
  yielded 
  some 
  years 
  ago 
  a 
  few 
  small 
  garnets. 
  

  

  Essex. 
  

  

  Series 
  I. 
  The 
  gneiss 
  does 
  not 
  appear 
  in 
  Essex. 
  

  

  Series 
  II 
  is 
  represented 
  by 
  a 
  small 
  exposure 
  of 
  crystalline 
  

   limestone, 
  etc., 
  at 
  Split 
  Rock. 
  The 
  limestone 
  is, 
  however, 
  so 
  

   thickly 
  filled 
  with 
  bunches 
  and 
  contorted 
  streaks 
  of 
  silicates, 
  

   as 
  to 
  be 
  almost 
  inferior 
  to 
  these 
  in 
  amount. 
  A 
  fine 
  metamor- 
  

   phosed 
  dike 
  cuts 
  its 
  northern 
  face 
  at 
  a 
  low 
  angle. 
  The 
  limestone 
  

   series 
  is 
  soon 
  succeeded 
  to 
  the 
  south 
  and 
  west 
  by 
  the 
  anorthosites 
  

   and 
  gabbros 
  to 
  whose 
  contact 
  influences 
  it 
  doubtless 
  owes 
  its 
  great 
  

   amount 
  of 
  contained 
  silicates. 
  

  

  Series 
  III 
  covers 
  the 
  greater 
  part 
  of 
  the 
  town. 
  It 
  is 
  partly 
  

   the 
  extension 
  of 
  the 
  Split 
  Rock 
  ridge 
  from 
  Essex, 
  partly 
  the 
  

   isolated 
  knob 
  of 
  Boquet 
  mountain, 
  and 
  partly 
  lower 
  hilly 
  exposures. 
  

   It 
  is 
  quite 
  possible 
  that 
  from 
  Whallonsburgh, 
  south 
  into 
  West- 
  

   port, 
  there 
  may 
  have 
  been 
  an 
  old 
  palaeozoic 
  channel. 
  Petro- 
  

   graphically 
  these 
  rocks 
  are 
  anorthosites, 
  more 
  or 
  less 
  gneissoid. 
  

  

  Series 
  IV. 
  The 
  Calciferoussanclstone 
  does 
  not 
  appear. 
  The 
  Pots- 
  

   dam 
  sands 
  tone 
  forms 
  a 
  fringe 
  along 
  the 
  anorthosites, 
  and 
  the 
  Boquet 
  

   river 
  flows 
  just 
  along 
  east 
  of 
  the 
  contact. 
  The 
  Chazy 
  limestone 
  is 
  

   brought 
  up 
  in 
  the 
  southern 
  part 
  of 
  the 
  village 
  by 
  a 
  superb 
  pair 
  of 
  

   faults, 
  so 
  that 
  it 
  forms 
  a 
  high 
  bluff. 
  It 
  is 
  a 
  drab 
  fossiliferous 
  lime- 
  

   stone. 
  There 
  is 
  a 
  difference 
  of 
  displacement 
  in 
  the 
  faults, 
  for 
  on 
  the 
  

   north 
  the 
  Trenton 
  is 
  at 
  the 
  water's 
  edge, 
  while 
  to 
  the 
  south 
  is 
  the 
  

   Utica. 
  Both 
  show 
  fine 
  exhibitions 
  of 
  the 
  dragged 
  edges 
  of 
  shaly 
  

   or 
  slaty 
  strata 
  against 
  a 
  firmer 
  resistant 
  bed. 
  This 
  fault 
  was 
  

   figured 
  fifty 
  years 
  ago 
  by 
  Emmons, 
  and 
  is 
  one 
  of 
  the 
  most 
  con- 
  

   spicuous 
  features 
  along 
  the 
  shore. 
  The 
  Trenton 
  limestone, 
  more 
  

  

  