﻿ECONOMIC 
  GEOLOGY 
  191 
  

  

  and 
  at 
  Higginsville 
  in 
  Oneida 
  county, 
  from 
  this 
  formation. 
  The 
  

   nearness 
  of 
  the 
  Medina 
  sandstone, 
  with 
  its 
  more 
  accessible 
  quar- 
  

   ries 
  and 
  superior 
  stone, 
  has 
  prevented 
  the 
  more 
  extensive 
  devel- 
  

   opment 
  of 
  the 
  quarrying 
  industry 
  in 
  the 
  sandstone 
  of 
  the 
  Clinton 
  

   group. 
  

  

  Oriskany 
  sandstone 
  

  

  The 
  Oriskany 
  sandstone 
  formation 
  is 
  best 
  developed 
  in 
  Oneida 
  

   and 
  Otsego 
  counties. 
  The 
  rock 
  is 
  hard, 
  silicious 
  and 
  cherty 
  in 
  

   places, 
  and 
  generally 
  too 
  friable 
  to 
  make 
  a 
  good 
  building 
  stone. 
  

   No 
  quarry 
  of 
  more 
  than 
  a 
  local 
  importance 
  is 
  known 
  in 
  it. 
  

  

  Cauda 
  galli 
  grit 
  and 
  Schoharie 
  grit 
  

  

  These 
  rocks 
  are 
  limited 
  to 
  Schohaime 
  and 
  Albany 
  counties 
  and 
  

   to 
  a 
  very 
  narrow 
  belt 
  which 
  sitretches 
  south 
  and 
  thence 
  south- 
  

   west 
  to 
  Ulster 
  county. 
  The 
  Cauda 
  galli 
  sandstones 
  are 
  argilla- 
  

   ceous 
  and 
  calcareous 
  and 
  are 
  noifc 
  durable. 
  They 
  are 
  used 
  in 
  

   Albany 
  county 
  for 
  road 
  metal, 
  but 
  are 
  not 
  very 
  good 
  for 
  this 
  

   purpose. 
  The 
  Schoharie 
  grit 
  is 
  generally 
  a 
  fine-grained, 
  calcare- 
  

   ous 
  sandrock 
  which 
  also 
  is 
  unsuited 
  for 
  building. 
  Quarries 
  in 
  

   these 
  rocks 
  have 
  local 
  use 
  only. 
  

  

  Marcellus 
  shale 
  

   As 
  its 
  name 
  implies, 
  this 
  formation 
  is 
  characterized 
  by 
  shaly 
  

   rocks, 
  which 
  are 
  not 
  adapted 
  to 
  building. 
  The 
  abundance 
  of 
  

   good 
  building 
  stone 
  in 
  the 
  next 
  geologic 
  member 
  below 
  it 
  — 
  the 
  

   Corniferous 
  limestone 
  — 
  whose 
  out'crop 
  borders 
  it 
  on 
  the 
  north 
  

   throughout 
  the 
  central 
  and 
  western 
  parts 
  of 
  the 
  state, 
  also 
  pre- 
  

   vents 
  any 
  use 
  which 
  might 
  be 
  made 
  of 
  its 
  stone. 
  A 
  single 
  quarry 
  

   was 
  at 
  one 
  time 
  opened 
  in 
  it 
  at 
  Chapinville, 
  Ontario 
  county. 
  

  

  Hamilton 
  group 
  

   The 
  rocks 
  of 
  the 
  Hamilton 
  group 
  outcrop 
  in 
  a 
  narrow 
  belt, 
  

   which 
  runs 
  from 
  the 
  Delaware 
  river, 
  in 
  a 
  northeast 
  course, 
  across 
  

   Sullivan 
  and 
  Ulster 
  counties 
  to 
  the 
  Hudson 
  valley 
  near 
  Kings- 
  

   ton; 
  thence 
  north, 
  in 
  the 
  foot-hills, 
  bordering 
  the 
  Catskills, 
  to 
  

   Albany 
  county; 
  then, 
  bending 
  to 
  the 
  northwest 
  and 
  west 
  across 
  

   the 
  Helderberg 
  mountains 
  into 
  Schoharie 
  county; 
  thence 
  increas- 
  

  

  