﻿REPORT 
  OF 
  THE 
  DIRECTOR 
  igi2 
  

  

  17 
  

  

  Albion 
  and 
  Oak 
  Orchard. 
  Preliminary 
  control 
  has 
  also 
  been 
  made 
  

   in 
  the 
  Medina 
  and 
  Ridgeway 
  quadrangles. 
  Reports 
  with 
  maps 
  have 
  

   been 
  rendered 
  in 
  final 
  form 
  on 
  the 
  following 
  quadrangles: 
  Attica, 
  

   Depew, 
  Caledonia, 
  Batavia, 
  Eden, 
  Silver 
  Creek; 
  the 
  Phelps 
  quad- 
  

   rangle 
  is 
  also 
  essentially 
  complete. 
  

  

  For 
  this 
  entire 
  western 
  New 
  York 
  region 
  the 
  present 
  condition 
  

   of 
  the 
  areal 
  survey 
  for 
  the 
  geologic 
  map 
  may 
  be 
  thus 
  summarized 
  : 
  

  

  Quadrangles 
  published 
  : 
  

  

  Auburn 
  Honeoye 
  

  

  Buffalo 
  Naples 
  

  

  Canandaigua 
  - 
  Nunda 
  

   Elmira 
  Olean 
  

  

  Genoa 
  Ontario 
  Beach 
  

  

  Hammondsport 
  Ovid 
  

  

  Penn 
  Yan 
  

  

  Portage 
  

  

  Tully 
  

  

  Watkins 
  

  

  Wayland 
  

  

  Quadrangles 
  reported: 
  

  

  Albion 
  Caledonia 
  

  

  Attica 
  Depew 
  

  

  Batavia 
  Eden 
  

  

  Brockport 
  Hamlin 
  

  

  Oak 
  Orchard 
  

   Phelps 
  

   Silver 
  Creek 
  

  

  Quadrangles 
  mapped 
  : 
  

   Cherry 
  Creek 
  Dunkirk 
  

  

  Westfield 
  

  

  Quadrangles 
  begun 
  : 
  

   Bath 
  Medina 
  

  

  Ridgeway 
  

  

  In 
  northern 
  New 
  York 
  a 
  completed 
  report 
  on 
  the 
  North 
  Creek 
  

   quadrangle 
  awaits 
  publication. 
  In 
  the 
  last 
  field 
  season, 
  the 
  

   Lake 
  Pleasant 
  quadrangle 
  was 
  surveyed 
  by 
  W. 
  J. 
  Miller, 
  

   who 
  reports 
  that 
  the 
  prevailing 
  rocks 
  belong 
  to 
  the 
  syenite- 
  

   granite 
  series 
  and 
  comprise 
  syenite 
  (augitic 
  to 
  hornblendic), 
  

   granitic 
  syenite, 
  granite 
  and 
  porphyry. 
  These 
  rocks 
  show 
  all 
  

   sorts 
  of 
  gradations 
  from 
  one 
  type 
  to 
  another. 
  Grenville 
  gneisses, 
  

   in 
  areas 
  sufficiently 
  free 
  from 
  igneous 
  rocks 
  to 
  permit 
  separate 
  

   mapping, 
  are 
  present 
  in 
  very 
  subordinate 
  amount. 
  Grenville 
  

   limestone 
  is 
  unusually 
  scarce, 
  only 
  a 
  few 
  small 
  outcrops 
  having 
  

   been 
  noted. 
  

  

  Still 
  other 
  areas, 
  often 
  of 
  considerable 
  size, 
  are 
  made 
  up 
  of 
  

   very 
  closely 
  involved 
  syenite 
  or 
  granite 
  and 
  Grenville. 
  Many 
  

  

  