﻿INDEX 
  TO 
  GEOLOGY 
  OF 
  SARATOGA 
  SPRINGS 
  AND 
  VICINITY 
  1 
  73 
  

  

  Faults, 
  10, 
  16, 
  30, 
  103 
  ; 
  general 
  re- 
  

   marks 
  on, 
  63-65; 
  of 
  Mohawk 
  val- 
  

   ley, 
  53-57; 
  of 
  Saratoga 
  and 
  

   Broadalbin 
  quadrangles, 
  diagram, 
  

  

  55 
  

  

  Feldspar, 
  18, 
  19, 
  20, 
  21, 
  23, 
  25, 
  28, 
  

   29 
  

  

  Feldspar-quartz 
  gneisses, 
  18 
  

  

  Ferruginous 
  quartzite 
  and 
  sand- 
  

   stone, 
  67, 
  70 
  

  

  Fish 
  creek, 
  12, 
  13, 
  104 
  

  

  Fisher, 
  W. 
  L., 
  cited, 
  54 
  

  

  Folded 
  area, 
  102-7 
  

  

  Foliation, 
  30 
  

  

  Ford, 
  S. 
  W., 
  investigations 
  by, 
  66 
  

  

  Fort 
  Cassin 
  beds, 
  78 
  

  

  Fort 
  Edward, 
  12, 
  101, 
  102 
  

  

  Fort 
  Miller, 
  94 
  

  

  Frankfort 
  formation, 
  52, 
  53 
  

  

  Gabbros, 
  17, 
  21, 
  26 
  

  

  Gansevoort, 
  101 
  

  

  Garnets, 
  18, 
  21, 
  23, 
  25, 
  28 
  

  

  Geology, 
  general, 
  by 
  H. 
  P. 
  Crush- 
  

   ing, 
  15-16; 
  descriptive 
  by 
  H. 
  P. 
  

   Cushing, 
  16-30; 
  control 
  of 
  de- 
  

   velopment 
  and 
  history 
  of 
  Saratoga 
  

   region 
  by, 
  168 
  

  

  Georgian 
  overthrust 
  blanket, 
  107-8 
  

  

  Georgian 
  rocks, 
  49, 
  66, 
  108, 
  in, 
  165 
  

  

  Girvanella 
  sp., 
  77 
  

  

  Glacial 
  period, 
  13, 
  146-48 
  

  

  Glens 
  Falls 
  limestone, 
  31, 
  47-48, 
  165 
  

  

  Glossograptus, 
  86 
  

   ciliatus, 
  93 
  

  

  quadrimucronatus 
  mut. 
  cornutus, 
  

   50, 
  51 
  

   mut. 
  pertenuis, 
  97 
  

  

  Glowegee, 
  101 
  

  

  Glowegee 
  creek, 
  34 
  

  

  Glyptocrinus, 
  96 
  

   cf. 
  decadactylus, 
  98 
  

  

  Gneiss, 
  18, 
  24 
  

  

  Grabau, 
  A. 
  W., 
  cited, 
  75 
  

  

  Graben, 
  16 
  

  

  Granite, 
  16, 
  17, 
  21-22, 
  25, 
  26, 
  28, 
  149 
  

  

  Grants 
  hollow, 
  112 
  

  

  Graphite, 
  18, 
  20, 
  148-49 
  

  

  Graptospongia 
  pusilla, 
  92 
  

  

  Greenfield 
  township, 
  34, 
  35 
  

   Greenfield 
  limestone, 
  38 
  

   Greenwich, 
  no 
  

   Greenwich 
  plateau, 
  11; 
  structure, 
  

  

  107-15 
  

   Grenville 
  series, 
  16, 
  17-20, 
  27, 
  135, 
  

  

  148 
  

   Gurnspring 
  fault, 
  60 
  

  

  Hall, 
  James, 
  cited, 
  38, 
  39 
  

  

  Hathorn 
  spring 
  record, 
  63 
  

  

  Heterocrinus 
  gracilis, 
  96 
  

  

  High 
  Rock 
  spring, 
  62 
  

  

  Hill, 
  B. 
  F., 
  cited, 
  21 
  

  

  Historical 
  geology, 
  by 
  Cushing 
  and 
  

  

  Ruedemann, 
  135-48 
  

   Hoffmans 
  Ferry, 
  10 
  

   Hoffmans 
  Ferry 
  fault, 
  54, 
  56, 
  58 
  

   Hoosic 
  river, 
  in 
  

   Hormotoma 
  (Murchisonia) 
  cassina, 
  

  

  77 
  

   Hornblende, 
  18, 
  28 
  

   Hoyt 
  limestone, 
  31, 
  32, 
  38-42, 
  60, 
  61, 
  

  

  137, 
  141, 
  151, 
  165 
  

   Hudson 
  Falls, 
  102 
  

   Hudson 
  grit, 
  86 
  

  

  " 
  Hudson 
  River 
  " 
  formation, 
  52, 
  90 
  

   Hudson 
  Valley 
  lowland, 
  10-12 
  

   Hyolithes 
  communis, 
  67 
  

   Hyolithellus 
  communis, 
  72 
  

  

  micans, 
  67, 
  72 
  

   rugosa, 
  72 
  

  

  Igneous 
  rocks, 
  Precambric, 
  21-30 
  

   Indian 
  Ladder 
  beds, 
  53, 
  142 
  

   Iphidea 
  pannula, 
  67 
  

   Isochilina 
  armata 
  var. 
  pygmaea, 
  80 
  

  

  Joints, 
  65 
  

  

  Kayaderosseras 
  creek, 
  12, 
  13, 
  48, 
  49, 
  

   50, 
  101 
  

  

  Kemp, 
  J. 
  F., 
  acknowledgments 
  to, 
  

  

  6; 
  cited, 
  21, 
  28, 
  30, 
  154, 
  162 
  

   Kendrick's 
  hill, 
  n 
  

   Kings 
  Station, 
  20, 
  60 
  

  

  Labradorite, 
  29 
  

   Lake 
  Albany, 
  147 
  

  

  