﻿458 
  P. 
  F. 
  Schneider 
  — 
  Geologic 
  Fault 
  in 
  New 
  York. 
  

  

  Art. 
  XLYII. 
  — 
  A 
  Geologic 
  Fault 
  at 
  Jamesville, 
  near 
  Syra- 
  

   cuse, 
  N. 
  Y; 
  by 
  Philip 
  F. 
  Schneider. 
  

  

  [Read 
  before 
  the 
  Onondaga 
  Academy 
  of 
  Science, 
  April 
  30, 
  1891.] 
  

  

  In 
  Yanuxem's 
  final 
  report 
  on 
  the 
  geology 
  of 
  the 
  Third 
  

   District 
  of 
  N"ew 
  York, 
  page 
  149, 
  we 
  read 
  : 
  " 
  Near 
  Manlius 
  

   square, 
  two 
  excavations 
  were 
  made 
  for 
  coal, 
  one 
  on 
  the 
  farm 
  

   of 
  Mr. 
  Nettleton, 
  near 
  the 
  turnpike, 
  about 
  a 
  mile 
  west 
  of 
  the 
  

   village." 
  " 
  AX 
  this 
  place 
  there 
  is 
  a 
  fault, 
  the 
  first 
  seen 
  upon 
  

   the 
  upper 
  range 
  going 
  west." 
  

  

  . 
  Heretofore, 
  local 
  geologists 
  have 
  always 
  maintained 
  that 
  the 
  

   preceding 
  quotation 
  referred 
  to 
  a 
  large 
  fracture 
  filled 
  with 
  cal- 
  

   cite, 
  which 
  exists 
  in 
  the 
  Helderberg 
  series 
  about 
  a 
  mile 
  west 
  of 
  

   the 
  village 
  of 
  Manlius, 
  and 
  not 
  to 
  a 
  fault 
  in 
  the 
  true 
  sense 
  of 
  

   the 
  word. 
  While 
  at 
  first 
  the 
  question 
  does 
  not 
  appear 
  to 
  war- 
  

   rant 
  any 
  lengthy 
  investigation, 
  still 
  the 
  fact 
  that 
  it 
  is 
  in 
  the 
  

   very 
  midst 
  of 
  the 
  horizontally 
  stratified 
  Paleozoic 
  rocks 
  of 
  

   Central 
  New 
  York, 
  which 
  have 
  recently 
  furnished 
  numerous 
  

   evidences 
  of 
  igneous 
  dikes; 
  as 
  at 
  Syracuse, 
  E". 
  Y, 
  at 
  DeWitt, 
  

   at 
  Manheim, 
  and 
  at 
  Ithaca 
  ; 
  and 
  since 
  the 
  location 
  of 
  the 
  fault 
  

   as 
  reported 
  by 
  Yanuxem 
  is 
  right 
  in 
  the 
  midst 
  of 
  the 
  noted 
  

   Green 
  Lake 
  region, 
  which 
  lakes 
  have 
  frequently 
  been 
  regarded 
  

   as 
  the 
  craters 
  of 
  extinct 
  volcanoes; 
  and 
  lastly 
  since 
  faults 
  are 
  

   practically 
  unknown 
  in 
  this 
  part 
  of 
  the 
  state, 
  the 
  matter 
  is 
  of 
  

   more 
  than 
  ordinary 
  interest. 
  This 
  being 
  the 
  case, 
  I 
  determined 
  

   to 
  look 
  into 
  the 
  matter 
  and 
  several 
  visits 
  to 
  that 
  locality 
  during 
  

   the 
  past 
  summer 
  disclosed 
  the 
  following 
  facts. 
  

  

  On 
  traveling 
  to 
  the 
  eastward 
  over 
  the 
  turnpike 
  from 
  

   Jamesville 
  to 
  Manlius 
  (Jamesville 
  being 
  the 
  first 
  station 
  on 
  the 
  

   D. 
  L. 
  and 
  W. 
  Railroad 
  and 
  about 
  seven 
  miles 
  south 
  of 
  Syra- 
  

   cuse) 
  the 
  road 
  rises 
  almost 
  immediately 
  from 
  the 
  level 
  plain 
  in 
  

   which 
  the 
  former 
  village 
  stands, 
  to 
  the 
  top 
  of 
  the 
  Helderberg 
  

   escarpment, 
  a 
  rise 
  of 
  some 
  200 
  feet. 
  After 
  reaching 
  the 
  top 
  

   of 
  this 
  escarpment 
  the 
  road 
  is 
  practically 
  the 
  top 
  of 
  the 
  upper 
  

   layer 
  of 
  the 
  Corniferous 
  limestone 
  and 
  for 
  a 
  distance 
  of 
  several 
  

   rods 
  is 
  destitute 
  of 
  soil 
  or 
  earth. 
  Half-a-mile 
  east 
  of 
  James- 
  

   ville 
  the 
  road 
  rises 
  over 
  the 
  Marcellus 
  shale 
  and 
  Goniatite 
  

   limestone 
  and 
  for 
  the 
  next 
  mile 
  passes 
  over 
  this 
  formation. 
  

   Then 
  the 
  road 
  drops 
  into 
  a 
  small 
  valley 
  slightly 
  more 
  than 
  a 
  

   half 
  mile 
  in 
  width 
  and 
  here 
  is 
  where 
  we 
  find 
  the 
  first 
  trace 
  of 
  

   the 
  fault. 
  On 
  reaching 
  the 
  valley 
  at 
  the 
  foot 
  of 
  the 
  hill, 
  one 
  

   finds 
  a 
  small 
  stream 
  crossing 
  the 
  turnpike 
  and 
  but 
  a 
  short 
  dis- 
  

   tance 
  to 
  the 
  west 
  of 
  its 
  intersection 
  with 
  the 
  direct 
  road 
  from 
  

   Fayetteville 
  to 
  Pompey. 
  At 
  this 
  point 
  the 
  stream 
  courses 
  

   over 
  layers 
  of 
  the 
  Corniferous 
  limestone. 
  Turning 
  to 
  the 
  

  

  