﻿FIFTH 
  REPORT 
  OF 
  THE 
  DIRECTOR 
  I908 
  

  

  I8S 
  

  

  downthrow 
  side 
  on 
  the 
  east.^ 
  Consequently 
  there 
  protrude 
  patches 
  

   of 
  Precambric 
  rocks, 
  as 
  at 
  Sprakers, 
  Little 
  Falls, 
  and 
  the 
  " 
  Gulf 
  " 
  

   (north 
  of 
  Little 
  Falls), 
  or 
  of 
  Beekmantown 
  and 
  Trenton 
  from 
  

   the 
  Utica 
  shales 
  [see 
  text 
  fig. 
  25, 
  26]. 
  Several 
  of 
  these 
  are 
  in- 
  

   volved 
  with 
  a 
  second 
  fault, 
  and 
  will 
  be 
  mentioned 
  under 
  the 
  next 
  

   group; 
  others, 
  however, 
  as 
  the 
  Beekmantown 
  inlier 
  at 
  Tribes 
  

   Hill, 
  at 
  Fonda 
  Bush, 
  the 
  Precambric 
  inlier 
  at 
  Sprakers, 
  that 
  at 
  

   the 
  Gulf 
  and 
  the 
  western 
  portion 
  of 
  the 
  Precambric 
  inlier 
  at 
  Little 
  

  

  Fig. 
  25 
  Sketch 
  map 
  of 
  the 
  faiilted 
  region 
  of 
  the 
  Mohawk 
  river 
  in 
  eastern 
  Fulton 
  

   ccuuy. 
  X. 
  Y. 
  showing 
  the 
  inliers 
  at 
  Sprakers, 
  Fonda, 
  Tribes 
  Hill 
  and 
  Fonda 
  Bush. 
  

  

  ^m 
  

  

  Precambric 
  rocks; 
  

  

  l:^-!-;; 
  

  

  Potsdam 
  sandstone; 
  

  

  00000 
  

  

  J 
  0.0 
  oc 
  Beekman. 
  

  

  o 
  o 
  

  

  town 
  limestone; 
  

  

  Trenton 
  limestone; 
  

  

  Utica 
  shale. 
  Scale 
  7-5 
  m- 
  

  

  Falls 
  are, 
  according 
  to 
  the 
  sections 
  furnished 
  by 
  Darton 
  and 
  Gush- 
  

   ing, 
  brought 
  up 
  by 
  the 
  tilting 
  of 
  the 
  blocks 
  along 
  one 
  fault 
  plain. 
  

   Ccrrasion 
  has 
  in 
  all 
  these 
  cases 
  served 
  as 
  an 
  accessory 
  agent 
  in 
  

   exposing 
  the 
  deeper 
  rocks. 
  Where 
  least 
  disturbed 
  by 
  corrasion, 
  

   they 
  are 
  readily 
  recognized 
  by 
  their 
  outline, 
  which 
  consists 
  of 
  a 
  

   straight 
  line 
  along 
  the 
  fault 
  and 
  as 
  a 
  rule 
  of 
  a 
  more 
  or 
  less 
  

   curved 
  boundary 
  on 
  the 
  other 
  side, 
  the 
  whole 
  inlier 
  approaching 
  a 
  

   segment 
  in 
  form. 
  The 
  areas 
  of 
  Paleozoic 
  sedimentaries 
  on 
  the 
  

   west 
  5id3 
  of 
  Lake 
  Champlain 
  which 
  also 
  are 
  broken 
  up 
  into 
  vari- 
  

  

  ^ 
  Sec 
  Darton, 
  N. 
  H. 
  X. 
  Y. 
  State 
  Geol. 
  Rcp't 
  for 
  1894. 
  1895. 
  p. 
  30. 
  

  

  