﻿REPORT 
  OF 
  THE 
  DIRECTOR 
  I912 
  83 
  

  

  7 
  A 
  small 
  outcrop 
  of 
  Theresa 
  sandstone 
  and 
  dolomite 
  (prob- 
  

   ably 
  with 
  underlying 
  Potsdam) 
  near 
  the 
  northern 
  border 
  of 
  the 
  

   Luzerne 
  quadrangle 
  and 
  one 
  mile 
  due 
  west 
  of 
  High 
  Street 
  

   village. 
  

  

  8 
  The 
  outlier 
  in 
  the 
  Sacandaga 
  valley 
  at 
  Wells, 
  Lake 
  Pleasant 
  

   quadrangle. 
  This, 
  the 
  largest 
  and 
  most 
  interesting 
  of 
  all 
  the 
  

   outliers, 
  shows 
  Potsdam 
  sandstone, 
  Theresa 
  transition 
  beds, 
  

   Little 
  Falls 
  dolomite, 
  Black 
  River 
  (Lowville) 
  limestone, 
  Trenton 
  

   limestone, 
  and 
  Canaioharie 
  (Trenton) 
  shale. 
  

  

  9 
  An 
  outlier 
  showing 
  Theresa 
  beds, 
  Little 
  Falls 
  dolomite, 
  and 
  

   Black 
  River 
  limestone 
  in 
  the 
  Sacandaga 
  river 
  valley 
  of 
  the 
  Lake 
  

   Pleasant 
  quadrangle 
  and 
  between 
  one 
  and 
  three 
  miles 
  northwest 
  

   of 
  Hope 
  postoffice. 
  

  

  Of 
  these, 
  numbers 
  7 
  and 
  9 
  have 
  been 
  discovered 
  by 
  the 
  writer 
  

   within 
  the 
  past 
  three 
  years. 
  

  

  Besides 
  the 
  above 
  there 
  are 
  a 
  number 
  of 
  other 
  outliers 
  close 
  

   to 
  the 
  main 
  body 
  of 
  Paleozoic 
  strata 
  as 
  : 
  In 
  the 
  valley 
  one 
  and 
  

   one-half 
  miles 
  west 
  of 
  Northville 
  (Broadalbin 
  quadrangle) 
  and 
  

   including 
  Potsdam, 
  Theresa 
  and 
  Little 
  Falls 
  strata; 
  several 
  

   Potsdam 
  sandstone 
  outliers 
  within 
  the 
  tongue 
  of 
  Precambric 
  

   rock 
  lying 
  just 
  east 
  of 
  Lake 
  George; 
  and 
  several 
  others 
  in 
  the 
  

   northwestern 
  portion 
  of 
  the 
  Ticonderoga 
  quadrangle. 
  

  

  Wherever 
  detailed 
  geologic 
  maps 
  have 
  been 
  recently 
  made 
  in 
  

   the 
  southeastern 
  Adirondacks 
  the 
  region 
  is 
  shown 
  to 
  be 
  literally 
  

   cut 
  to 
  pieces 
  by 
  numerous 
  normal 
  faults, 
  as 
  many 
  as 
  fifteen 
  to 
  

   thirty 
  being 
  clearly 
  recognizable 
  within 
  single 
  quadrangles. 
  

   Most 
  of 
  the 
  prominent 
  faults 
  strike 
  northeast-southwest 
  with 
  

   throws 
  usually 
  ranging 
  from 
  a 
  few 
  hundred 
  to 
  two 
  thousand 
  or 
  

   more 
  feet. 
  It 
  is 
  important 
  to 
  note 
  that 
  all 
  the 
  outliers 
  above 
  

   mentioned 
  as 
  occurring 
  well 
  within 
  the 
  Precambric 
  rock 
  area, 
  

   except 
  possibly 
  those 
  of 
  the 
  Paradox 
  Lake 
  quadrangle, 
  lie 
  on 
  

   the 
  downthrow 
  sides 
  of 
  such 
  faults. 
  In 
  the 
  case 
  of 
  the 
  Wells 
  

   outlier 
  (No. 
  8) 
  the 
  valley 
  is 
  of 
  the 
  nature 
  of 
  a 
  " 
  graben 
  " 
  or 
  fault- 
  

   trough 
  with 
  a 
  prominent 
  fault 
  on 
  each 
  side 
  so 
  that 
  the 
  block 
  of 
  

   Paleozoic 
  rock 
  has 
  been 
  dropped 
  down 
  no 
  less 
  than 
  sixteen 
  

   hundred 
  feet 
  to 
  its 
  present 
  position. 
  Thus 
  there 
  appears 
  to 
  be 
  

   no 
  escape 
  from 
  the 
  conclusion 
  that 
  the 
  valleys 
  containing 
  these 
  

   outliers 
  have 
  been 
  largely 
  produced 
  by 
  faulting 
  and 
  that 
  the 
  

   Paleozoic 
  strata 
  formerly 
  lay 
  at 
  a 
  much 
  higher 
  level, 
  that 
  is, 
  

   the 
  general 
  level 
  of 
  the 
  Precambric 
  rock 
  surface. 
  

  

  