﻿Lahee 
  — 
  Neiv 
  Fossiliferous 
  Horizon, 
  in 
  Littleton, 
  N. 
  H 
  231 
  

  

  Art. 
  XX 
  Y. 
  — 
  Geology 
  of 
  the 
  New 
  Fossiliferous 
  Horizon 
  

   and 
  the 
  Underlying 
  Books, 
  in 
  Littleton, 
  New 
  Hampshire 
  • 
  

   by 
  Frederic 
  H. 
  Lahee. 
  

  

  Contents. 
  

  

  Page 
  

  

  Introduction 
  _ 
  • 
  231 
  

  

  Summary 
  . 
  . 
  -- 
  232 
  

  

  Geology 
  of 
  the 
  Fitch 
  Hill 
  Section 
  ._ 
  234 
  

  

  The 
  Lyman 
  schists 
  234 
  

  

  The 
  Fitch 
  Hill 
  granite 
  gneiss 
  235 
  

  

  Earlier 
  references 
  _ 
  _. 
  235 
  

  

  Distribution 
  _. 
  235 
  

  

  Northern 
  phase 
  235 
  

  

  Southern 
  phase 
  - 
  238 
  

  

  Variations 
  in 
  mineral 
  composition 
  238 
  

  

  Intrusive 
  contact 
  with 
  the 
  Lyman 
  schists 
  _ 
  239 
  

  

  Unconformable 
  contact 
  with 
  Blueberry 
  Mt. 
  series__ 
  240 
  

  

  Blueberry 
  Mountain 
  series 
  on 
  Fitch 
  Hill 
  __ 
  _. 
  241 
  

  

  Geology 
  of 
  the 
  Blueberry 
  Mountain 
  series 
  southwest 
  

  

  of 
  Fitch 
  Hill 
  244 
  

  

  Distribution 
  _ 
  ._ 
  244 
  

  

  Structure 
  and 
  Correlation 
  246 
  

  

  Devonian 
  fossiliferous 
  horizon 
  247 
  

  

  Introduction. 
  

  

  In 
  August, 
  1912, 
  the 
  writer 
  published 
  a 
  notice 
  of 
  the 
  discov- 
  

   ery 
  of 
  a 
  new 
  fossiliferous 
  horizon 
  near 
  Littleton, 
  New 
  Hamp- 
  

   shire.'" 
  Further 
  field 
  work 
  and 
  subsequent 
  laboratory 
  study 
  

   have 
  furnished 
  material 
  for 
  a 
  more 
  complete 
  description 
  of 
  the 
  

   geology 
  of 
  this 
  region. 
  f 
  

  

  The 
  town 
  of 
  Littleton 
  is 
  23 
  miles 
  nearly 
  due 
  west 
  from 
  Mt. 
  

   Washington, 
  and 
  is 
  situated 
  on 
  the 
  terraces 
  of 
  the 
  Ammonoo- 
  

   suc 
  River, 
  about 
  22 
  miles 
  from 
  the 
  point 
  where 
  this 
  stream 
  

   unites 
  with 
  the 
  Connecticut 
  River 
  at 
  Woodsville. 
  

  

  Two 
  miles 
  west 
  of 
  Littleton 
  the 
  land 
  rises 
  westward 
  1000 
  to 
  

   1200 
  feet 
  above 
  the 
  Ammonoosuc 
  River 
  to 
  a 
  ridge 
  known 
  in 
  

   its 
  northern 
  part 
  as 
  Blueberry 
  Mountain 
  and 
  in 
  its 
  southern 
  as 
  

   Bald 
  Hill. 
  Blueberry 
  Mountain, 
  has 
  its 
  northeastern 
  end 
  in 
  a 
  

   valley 
  in 
  which 
  two 
  brooks 
  flow, 
  one 
  northwest 
  to 
  the 
  Con- 
  

   necticut 
  River, 
  and 
  the 
  other 
  southeast 
  to 
  the 
  Ammonoosuc 
  

   River 
  (see 
  fig. 
  1). 
  A 
  relatively 
  small 
  crest 
  (not 
  shown 
  by 
  the 
  

   contours) 
  at 
  the 
  northern 
  end 
  of 
  Blueberry 
  Mt. 
  is 
  known 
  as 
  

   Fitch 
  Hill. 
  This 
  hill 
  is 
  just 
  south 
  of 
  Locality 
  7, 
  as 
  shown 
  in 
  

   fig. 
  2. 
  

  

  * 
  A 
  New 
  Fossiliferous 
  Horizon 
  on 
  Blueberry 
  Mt., 
  in 
  Littleton, 
  New 
  

   Hampshire, 
  Science, 
  N. 
  S., 
  xxxvi, 
  p. 
  275, 
  1912. 
  

  

  f 
  This 
  geological 
  investigation 
  was 
  undertaken 
  with 
  the 
  aid 
  of 
  a 
  fund 
  pro- 
  

   vided 
  through 
  the 
  generosity 
  of 
  Mr. 
  R. 
  W. 
  Sayles, 
  of 
  the 
  Harvard 
  Geological 
  

   Deparirnent. 
  

  

  