﻿GEOLOGY 
  OF 
  SARATOGA 
  SPRINGS 
  AND 
  VICINITY 
  79 
  

  

  mountain 
  now 
  best 
  exposed 
  near 
  the 
  two 
  road 
  crossings, 
  the 
  one 
  

   just 
  west 
  and 
  the 
  other 
  just 
  south 
  of 
  Bald 
  mountain, 
  near 
  the 
  latter 
  

   crossing 
  in 
  a 
  quarry. 
  The 
  dolomite 
  in 
  the 
  former 
  outcrop 
  is, 
  on 
  

   account 
  of 
  the 
  complicated 
  overturned 
  and 
  recumbent 
  fold 
  struc- 
  

   ture 
  of 
  the 
  limestone 
  belt, 
  apparently 
  separated 
  from 
  the 
  limestone 
  

   by 
  shale 
  beds 
  (see 
  page 
  109) 
  and 
  so 
  represented 
  by 
  Walcott. 
  The 
  

   aspect 
  of 
  the 
  dolomite 
  which 
  also 
  contains 
  considerable 
  chert 
  reminds 
  

   one 
  of 
  the 
  Little 
  Falls 
  dolomite. 
  It 
  is, 
  however, 
  not 
  to 
  be 
  sepa- 
  

   rated 
  as 
  a 
  unit 
  from 
  the 
  limestone, 
  for 
  the 
  two 
  were 
  found 
  to 
  be 
  

   grading 
  into 
  each 
  other 
  on 
  the 
  road 
  from 
  Middle 
  Falls 
  to 
  Bald 
  

   mountain 
  and 
  also 
  along 
  the 
  road 
  south 
  of 
  Middle 
  Falls. 
  One 
  

   instructive 
  locality, 
  a 
  small 
  quarry 
  alongside 
  the 
  road, 
  at 
  the 
  west 
  

   foot 
  of 
  Louse 
  hill, 
  furnished 
  the 
  following 
  section 
  in 
  descending 
  

   order 
  : 
  

  

  Thin-bedded 
  limestone 
  

   Massive 
  limestone 
  bed 
  

   Brecciated 
  limestone 
  with 
  gastropods 
  

   Dolomite 
  bed 
  with 
  irregular 
  band 
  of 
  limestone 
  in 
  

   middle, 
  full 
  of 
  narrow 
  chambered 
  cephalopods 
  

   Dolomite 
  bed 
  

   Brecciated 
  limestone 
  

  

  Of 
  the 
  limestone 
  we 
  have 
  seen 
  in 
  one 
  place 
  (west 
  of 
  Louse 
  hill) 
  

   70 
  feet 
  in 
  continuous 
  section, 
  with 
  the 
  top 
  and 
  bottom 
  not 
  exposed. 
  

   It 
  may 
  therefore 
  reach 
  100 
  feet 
  in 
  thickness. 
  It 
  is 
  for 
  the 
  most 
  part 
  

   fine 
  grained, 
  sometimes 
  approaching 
  the 
  dove-colored 
  limestones, 
  

   light 
  bluish 
  gray 
  in 
  color 
  with 
  many 
  white 
  crystalline 
  spots. 
  In 
  the 
  

   lower 
  part 
  it 
  contains 
  somewhat 
  arenaceous 
  bands. 
  It 
  resembles 
  

   some 
  of 
  the 
  limestone 
  of 
  D 
  of 
  the 
  Champlain 
  valley 
  and 
  also 
  some 
  

   of 
  the 
  Middle 
  Chazy 
  rocks. 
  Emmons 
  referred 
  it 
  to 
  the 
  Calciferous 
  

   sandrock 
  (Beekmantown). 
  Walcott 
  designated 
  it 
  as 
  Chazy 
  lime- 
  

   stone 
  in 
  the 
  Bald 
  Mountain 
  section, 
  but 
  stated 
  (1888, 
  page 
  317) 
  

   that 
  about 
  2 
  miles 
  north 
  of 
  Bald 
  mountain 
  similar 
  rocks 
  contain 
  

   Trenton 
  fossils. 
  Dale 
  (1889, 
  page 
  190) 
  also 
  refers 
  to 
  this 
  lime- 
  

   stone 
  as 
  Trenton 
  limestone 
  but 
  mentions 
  that 
  in 
  some 
  places 
  it 
  

   may 
  represent 
  the 
  entire 
  Lower 
  Siluric 
  series 
  and 
  should 
  then 
  be 
  

   regarded 
  as 
  Trenton, 
  Chazy, 
  and 
  Calciferous. 
  On 
  the 
  Schuyler- 
  

   ville 
  quadrangle 
  the 
  limestone 
  is 
  as 
  the 
  above 
  given 
  fossil 
  lists 
  

   show, 
  throughout 
  of 
  Beekmantown 
  age. 
  There 
  is, 
  however, 
  no 
  

   doubt 
  that 
  also 
  in 
  other 
  parts 
  of 
  the 
  slate 
  belt 
  limestone 
  of 
  Tren- 
  

   ton, 
  or 
  at 
  least 
  Mohawkian, 
  age 
  outcrops. 
  The 
  presence 
  of 
  such 
  

  

  4 
  feet 
  

  

  

  3^ 
  feet 
  

  

  

  3 
  feet 
  

  

  

  2 
  feet, 
  

  

  4 
  inches 
  

  

  1 
  foot, 
  

  

  2 
  inches 
  

  

  3 
  feet 
  

  

  

  