﻿GEOLOGY 
  OF 
  WASHINGTON, 
  WARREN 
  COUNTIES, 
  ETC. 
  

  

  519 
  

  

  ventional 
  sign 
  does 
  not 
  correspond 
  to 
  the 
  dip. 
  C. 
  D. 
  Walcott 
  had 
  

   previously 
  noted 
  this 
  exposure." 
  

  

  The 
  Calciferous 
  limestone 
  forms 
  a 
  small 
  faulted 
  block 
  on 
  the 
  

   Champlain 
  shore 
  about 
  two 
  miles 
  north 
  of 
  Chubbs 
  Dock. 
  A 
  

   .specimen 
  was 
  also 
  gathered 
  at 
  23, 
  in 
  the 
  extreme 
  northeast 
  

   corner, 
  but 
  it 
  was 
  not 
  certainly 
  in 
  place. 
  No 
  higher 
  members 
  of 
  

   the 
  Ordovician 
  appear. 
  

  

  Series 
  5. 
  Trap 
  dikes 
  have 
  been 
  noted 
  in 
  three 
  instances; 
  one 
  

   near 
  71, 
  west 
  of 
  Snody 
  dock, 
  and 
  a 
  second 
  on 
  the 
  shore 
  of 
  South 
  

   bay 
  near 
  88. 
  The 
  former 
  appears 
  to 
  be 
  disconnected 
  with 
  any 
  

   larger 
  eruptive 
  mass 
  and 
  to 
  be 
  a 
  diabasic 
  trap 
  of 
  the 
  common 
  

   type. 
  The 
  latter 
  may 
  be 
  an 
  offshoot 
  of 
  the 
  neighboring 
  gabbro. 
  

   There 
  are 
  also 
  two 
  narrow 
  dikes 
  of 
  black 
  igneous 
  rock 
  near 
  56, 
  in 
  

   a 
  cliff 
  on 
  South 
  bay, 
  one 
  of 
  which 
  appears 
  to 
  be 
  an 
  offshoot 
  of 
  

  

  Fig. 
  2 
  

  

  Sketch 
  of 
  trap 
  dikes 
  on 
  northwestern 
  shore 
  of 
  South 
  bay, 
  Dresden. 
  

  

  the 
  other 
  although 
  the 
  connection 
  is 
  not 
  visible. 
  Fig. 
  2 
  illus- 
  

   trates 
  their 
  relations. 
  The 
  dikes 
  stand 
  vertically 
  and 
  cut 
  the 
  

   foliation 
  at 
  nearly 
  a 
  right 
  angle. 
  The 
  large 
  one 
  is 
  about 
  18 
  inches 
  

   thick. 
  A 
  short 
  distance 
  further 
  a 
  nearly 
  horizontal 
  band 
  of 
  light, 
  

  

  a 
  American 
  journal 
  of 
  science. 
  Ap. 
  1888, 
  plate 
  3. 
  

  

  