﻿Education 
  Department 
  Bulletin 
  

  

  Published 
  fortnightly 
  by 
  the 
  University 
  of 
  the 
  State 
  of 
  New 
  York 
  

  

  Entered 
  as 
  second-class 
  matter 
  June 
  24, 
  igo8, 
  at 
  the 
  Post 
  Office 
  at 
  Albany, 
  N. 
  Y., 
  under 
  

  

  the 
  act 
  of 
  July 
  16, 
  1894 
  

  

  No. 
  463 
  

  

  ALBANY, 
  N. 
  Y. 
  

  

  January 
  15, 
  1910 
  

  

  New 
  York 
  State 
  Museum 
  

  

  John 
  M. 
  Clarke, 
  Director 
  

   Museum 
  bulletin 
  135 
  

  

  GEOLOGY 
  OF 
  THE 
  PORT 
  LEYDEN 
  

   QUADRANGLE, 
  LEWIS 
  COUNTY, 
  N. 
  Y. 
  

  

  BY 
  

  

  W. 
  J. 
  MILLER 
  

  

  Introduction 
  5 
  

  

  General 
  geologic 
  features 
  6 
  

  

  Topography 
  and 
  drainage 
  8 
  

  

  Precambric 
  rocks 
  9 
  

  

  Paleozoic 
  rocks 
  21 
  

  

  Structural 
  geology 
  34 
  

  

  Paleozoic 
  overlap 
  2)1 
  

  

  Surface 
  of 
  the 
  Precambric 
  rocks.. 
  39 
  

  

  Pleistocene 
  (glacial) 
  geology. 
  ... 
  44 
  

  

  Ice 
  erosion 
  46 
  

  

  Economic 
  products 
  56 
  

  

  Index 
  59 
  

  

  ALBANY 
  

  

  UNIVERSITY 
  OF 
  THE 
  STATE 
  OF 
  NEW 
  YORK 
  

   19IO 
  

  

  Mjair-Sg-isoo 
  

  

  