﻿Report 
  of 
  the 
  State 
  Geologist. 
  

  

  259 
  

  

  KECOKDED 
  SECTION 
  OF 
  LIVONIA 
  SHAFT. 
  

  

  6' 
  Bluish 
  gray 
  shales, 
  quite 
  soft, 
  breaking 
  easily 
  across 
  the 
  

   lines 
  of 
  deposition, 
  and 
  crumbling 
  into 
  a 
  mass 
  of 
  small 
  angular 
  

   fragments 
  on 
  exposure. 
  Thin 
  calcareous 
  layers 
  made 
  up 
  of 
  

   crinoid 
  columns, 
  mainly, 
  but 
  containing 
  many 
  other 
  fossils, 
  

   occur 
  frequently. 
  Fossils 
  are 
  moderately 
  abundant 
  in 
  the 
  

   shale 
  also. 
  Fine 
  large 
  specimens 
  of 
  Phacops 
  rana 
  with 
  

   Homolonotus 
  DeKayi, 
  Cryphams 
  Poothi, 
  Platyceras 
  sub- 
  

   rectum, 
  Actinopteria 
  decussata, 
  Pterinopecten 
  undosus, 
  Spi- 
  

   rifer 
  mucronatus, 
  Sp. 
  divaricatus, 
  Athyris 
  spirifer 
  oides, 
  and 
  

   owners, 
  are 
  common. 
  

  

  Thin 
  limestone 
  with 
  crinoid 
  heads 
  and 
  columns 
  and 
  other 
  fossils. 
  

  

  29' 
  Compact 
  dark 
  blue 
  shales, 
  which 
  on 
  weathering 
  become 
  

   light 
  bluish 
  gray, 
  with 
  a 
  blocky 
  fracture. 
  The 
  upper 
  part 
  of 
  

   the 
  bed 
  medium 
  soft, 
  below 
  400' 
  harder. 
  

  

  Fossils 
  are 
  to 
  be 
  found 
  in 
  small 
  numbers 
  all 
  through 
  the 
  

   mass. 
  

  

  Phacops 
  rana, 
  very 
  large, 
  but 
  not 
  common, 
  also 
  a 
  few 
  

   specimens 
  of 
  Homolonotus 
  DeKayi 
  and 
  Cryphosus 
  JBoothi 
  

   were 
  found. 
  

  

  Other 
  fossils 
  are 
  Diaphorostoma 
  lineatum, 
  Platyceras 
  sub- 
  

   rectum, 
  Pleurotomaria 
  capillaria, 
  P. 
  rugidata, 
  Bellerophon 
  

   patulus, 
  Actinopteria 
  decussata, 
  Liopteria 
  Conradi, 
  Spirifer 
  

   fimbriatus, 
  Spirifer 
  mucronatus, 
  Athyris 
  spiriferoides, 
  Tro- 
  

   pidolevtus 
  carinatus, 
  Chonetes 
  scitula, 
  Lingula 
  punctata 
  and 
  

   rarely, 
  afbryozoan. 
  

  

  