﻿1864.] 
  HULL 
  AND 
  GREEN 
  MILLSTONE-GRIT. 
  249 
  

  

  the 
  most 
  part 
  rapid, 
  and 
  the 
  several 
  members 
  of 
  the 
  Millstone 
  and 
  

   Gannister 
  series 
  plunge 
  beneath 
  the 
  Lancashire 
  Coal-field. 
  On 
  the 
  

   opposite 
  or 
  Yorkshire 
  side, 
  however, 
  the 
  strata 
  evince 
  no 
  such 
  pre- 
  

   cipitancy. 
  The 
  Kinder 
  Scout 
  Grit 
  lies 
  nearly 
  horizontal, 
  and 
  rises 
  

   into 
  tabular 
  moorlands, 
  to 
  a 
  height 
  of 
  nearly 
  2000 
  feet 
  above 
  the 
  

   sea-level. 
  A 
  little 
  further 
  on, 
  the 
  grits 
  begin 
  to 
  dip 
  towards 
  the 
  

   east, 
  at 
  first 
  leisurely, 
  then 
  more 
  rapidly, 
  until 
  they 
  also 
  are 
  lost 
  be- 
  

   neath 
  the 
  Coal-measures 
  of 
  Yorkshire. 
  The 
  section 
  (fig. 
  1) 
  on 
  

   p. 
  251 
  will 
  illustrate 
  this 
  peculiarity. 
  

  

  Penological 
  details. 
  Yoredale 
  Beds. 
  — 
  The 
  lowest 
  beds 
  of 
  this 
  se- 
  

   ries 
  exposed 
  are 
  close 
  to 
  the 
  fault. 
  They 
  consist 
  of 
  shales 
  a 
  little 
  

   below 
  the 
  Yoredale 
  or 
  Shale-grit. 
  This 
  latter 
  is 
  shown 
  near 
  the 
  

   entrance 
  to 
  the 
  tunnel, 
  and 
  in 
  quarries 
  on 
  both 
  sides 
  of 
  the 
  fault. 
  

   It 
  consists 
  of 
  rather 
  massive 
  greyish 
  sandstone, 
  sometimes 
  coarse, 
  

   but 
  seldom 
  a 
  conglomerate 
  like 
  the 
  Kinder 
  Scout 
  Grit 
  ; 
  over 
  it 
  comes 
  

   a 
  thick 
  series 
  of 
  black 
  and 
  greyish-blue 
  shales, 
  which 
  extend 
  up 
  to 
  

   the 
  base 
  of 
  the 
  Millstone 
  ridges. 
  The 
  thickness 
  of 
  the 
  series 
  of 
  beds 
  

   here 
  shown 
  is 
  not 
  less 
  than 
  1200 
  feet, 
  and 
  the 
  basement-beds 
  are 
  

   nowhere 
  brought 
  to 
  light. 
  Hence 
  it 
  is 
  probable 
  that 
  the 
  Yoredale 
  

   beds 
  are 
  here 
  altogether 
  not 
  less 
  than 
  2000 
  feet 
  in 
  thickness. 
  

  

  The 
  Kinder 
  Scout 
  Grit, 
  or 
  Fourth 
  Grit, 
  consists 
  of 
  two 
  or 
  three 
  

   beds 
  of 
  very 
  massive 
  grit 
  or 
  conglomerate, 
  separated 
  by 
  shales, 
  

   altogether 
  attaining 
  a 
  thickness 
  of 
  not 
  less 
  than 
  600 
  or 
  700 
  feet. 
  

   It 
  often 
  contains 
  pebbles 
  of 
  white 
  quartz 
  the 
  size 
  of 
  a 
  pigeon's 
  egg, 
  

   but 
  no 
  larger, 
  and 
  is 
  traversed 
  by 
  planes 
  of 
  current-bedding, 
  which 
  

   dip 
  towards 
  the 
  W.S.W. 
  It 
  forms 
  the 
  ridges 
  of 
  Harrop 
  Edge, 
  Mill- 
  

   stone 
  Edge, 
  Diggle 
  Edge, 
  Charnel 
  Rocks, 
  Warlow 
  Pike, 
  Harridge 
  

   Pike, 
  Tintwistle 
  Knar, 
  and 
  Roe 
  Cross, 
  and 
  is 
  largely 
  quarried 
  for 
  

   foundation-stones, 
  &c. 
  

  

  Third 
  Grit. 
  — 
  At 
  the 
  top 
  of 
  the 
  fourth 
  grit 
  there 
  is 
  sometimes 
  a 
  

   little 
  coal, 
  and 
  then 
  a 
  thick 
  series 
  of 
  shales 
  and 
  flags, 
  forming 
  the 
  

   flanks 
  (as 
  we 
  suppose 
  at 
  present) 
  of 
  Pule 
  Hill. 
  At 
  Mossley 
  these 
  

   shales 
  are 
  400 
  feet 
  in 
  thickness, 
  and 
  are 
  surmounted 
  by 
  the 
  third 
  

   grit, 
  which 
  at 
  Pule 
  Hill 
  forms 
  a 
  sharp 
  and 
  serrated 
  ridge, 
  and 
  south 
  

   of 
  Mossley 
  is 
  well 
  shown 
  on 
  the 
  banks 
  of 
  the 
  Tame. 
  The 
  upper 
  

   beds 
  are 
  massive 
  and 
  coarse, 
  the 
  lower 
  flaggy. 
  The 
  third 
  grit 
  may 
  

   be 
  seen 
  west 
  of 
  Friar 
  Mere, 
  at 
  Lidgate, 
  Mossley, 
  and 
  in 
  quarries 
  

   alongside 
  Staley 
  Lane 
  ; 
  also 
  at 
  Hollingworth 
  and 
  Hadfield. 
  The 
  

   thickness 
  varies 
  from 
  300 
  to 
  450 
  feet. 
  

  

  Second 
  Grit. 
  — 
  Above 
  the 
  third 
  grit 
  occurs 
  a 
  series 
  of 
  generally 
  

   black 
  shales, 
  with 
  a 
  stratum 
  of 
  rock*, 
  and 
  a 
  coal-seam 
  which 
  is 
  

   worked 
  at 
  Mossley 
  and 
  Mottram. 
  The 
  thickness 
  of 
  this 
  shale 
  series 
  

   is 
  about 
  500 
  feet 
  at 
  Mossley, 
  and 
  it 
  is 
  surmounted 
  by 
  the 
  flagstones 
  

   which 
  form 
  the 
  second 
  grit 
  of 
  our 
  classification. 
  In 
  this 
  part 
  of 
  the 
  

   district 
  these 
  flags 
  t 
  (which, 
  further 
  south, 
  form 
  a 
  distinct 
  geological 
  

   horizon) 
  are 
  here 
  in 
  close 
  connexion 
  with 
  the 
  first 
  grit, 
  or 
  " 
  Rough 
  

   Rock," 
  and 
  can 
  only 
  be 
  considered 
  as 
  a 
  lower 
  member 
  of 
  it. 
  They 
  

   are, 
  however, 
  very 
  constant 
  in 
  this 
  position, 
  and 
  may 
  be 
  traced 
  along 
  

  

  * 
  Called 
  " 
  Scout 
  Eock," 
  near 
  Staleybridge 
  ; 
  not 
  "Kinder 
  Scout 
  Rock." 
  

   t 
  Called 
  by 
  Mr. 
  E. 
  W. 
  Binnev 
  " 
  The 
  Haslingden 
  Flags." 
  

  

  s2 
  

  

  