﻿250 
  PROCEEDINGS 
  OF 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  [Mar. 
  23, 
  

  

  Badger 
  Edge, 
  near 
  Delf, 
  and 
  Brown 
  Edge 
  and 
  Early 
  Bank, 
  near 
  

   Staleybridge. 
  Further 
  south 
  the 
  shales 
  which 
  intervene 
  between 
  the 
  

   second 
  and 
  third 
  grit 
  thicken 
  out, 
  and 
  each 
  of 
  these 
  beds 
  assumes 
  a 
  

   more 
  individualized 
  character. 
  

  

  First 
  Grit, 
  or 
  Rough 
  Mock. 
  — 
  This 
  is 
  a 
  coarse 
  grit 
  and 
  conglome- 
  

   rate, 
  nowhere 
  very 
  thick 
  in 
  this 
  neighbourhood, 
  and 
  east 
  of 
  Staley- 
  

   bridge 
  totally 
  disappearing 
  for 
  a 
  short 
  space. 
  South 
  of 
  Mottram, 
  

   however, 
  it 
  again 
  appears 
  in 
  force. 
  It 
  may 
  be 
  traced 
  along 
  Bow- 
  

   stead 
  Edge 
  to 
  Knot 
  Hill, 
  then 
  from 
  Grotton 
  Head 
  along 
  High 
  

   Knowles 
  to 
  Luzley, 
  where 
  it 
  thins 
  away. 
  Along 
  this 
  range 
  it 
  dips 
  

   beneath 
  the 
  shales 
  of 
  the 
  Lower 
  Coal-measures. 
  "We 
  may 
  place 
  the 
  

   average 
  thickness 
  of 
  the 
  first 
  and 
  second 
  grits 
  in 
  this 
  district 
  at 
  

   150 
  feet. 
  We 
  thus 
  get 
  the 
  thickness 
  of 
  the 
  entire 
  series 
  as 
  follows 
  : 
  

  

  Staleybridge 
  District. 
  

  

  feet. 
  

   First 
  and 
  Second 
  Grits 
  150 
  

  

  Shales 
  (with 
  coal) 
  500 
  

  

  Third 
  Grit 
  (300 
  to 
  450) 
  400 
  

  

  Shales 
  400 
  

  

  Fourth 
  Grit, 
  in 
  two 
  or 
  three 
  beds 
  (600 
  to 
  700) 
  650 
  

  

  Total 
  2100 
  

  

  b. 
  Mottram 
  and 
  Glossop 
  District. 
  Position 
  of 
  Rocks 
  at 
  the 
  surface. 
  

   — 
  In 
  this 
  neighbourhood 
  the 
  Goyt 
  Trough 
  has 
  its 
  northern 
  termina- 
  

   tion 
  ; 
  the 
  beds 
  of 
  the 
  Millstone 
  series, 
  above 
  the 
  Kinder 
  Scout 
  Grit, 
  

   gradually 
  rising 
  and 
  cropping 
  out 
  to 
  the 
  northwards 
  as 
  well 
  as 
  to 
  

   the 
  eastward 
  and 
  westward. 
  South 
  of 
  Mottram 
  the 
  symmetry 
  of 
  the 
  

   trough 
  is 
  much 
  interrupted 
  by 
  faults, 
  which 
  give 
  origin 
  to 
  local 
  rolls 
  

   of 
  the 
  strata 
  ; 
  and 
  so 
  it 
  is 
  not 
  until 
  we 
  have 
  passed 
  south 
  of 
  New 
  

   Mills 
  that 
  the 
  beds 
  resume 
  their 
  centroclinal 
  arrangement. 
  

  

  The 
  other 
  main 
  feature, 
  namely, 
  the 
  Saddleworth 
  anticlinal, 
  also 
  

   loses 
  its 
  normal 
  character, 
  and 
  at 
  Compstall 
  passes 
  altogether 
  into 
  

   a 
  fracture 
  ; 
  and 
  it 
  is 
  not 
  until 
  we 
  reach 
  Disley 
  that 
  the 
  change 
  of 
  dip 
  

   becomes 
  very 
  clearly 
  developed. 
  These 
  features 
  will 
  be 
  understood 
  

   by 
  the 
  section 
  (fig. 
  2), 
  which 
  is 
  continued 
  eastward 
  across 
  the 
  

   Peak, 
  in 
  order 
  to 
  show 
  the 
  general 
  arrangement 
  and 
  connexion 
  of 
  

   the 
  beds. 
  

  

  The 
  Kinder 
  Scout, 
  or 
  fourth, 
  Grit 
  forms 
  a 
  range 
  of 
  moorland 
  hills 
  

   extending 
  from 
  Glossop 
  and 
  Hayfield 
  eastward 
  across 
  the 
  watershed 
  

   of 
  England, 
  and 
  embracing 
  in 
  its 
  centre 
  the 
  table-land 
  of 
  The 
  Peak. 
  

   The 
  beds 
  rise 
  to 
  the 
  eastward 
  with 
  great 
  regularity, 
  gradually 
  

   flattening 
  towards 
  the 
  axis, 
  and 
  then 
  roll 
  over 
  on 
  the 
  eastern 
  dip. 
  

   Along 
  the 
  western 
  side 
  of 
  the 
  axis, 
  to 
  which 
  we 
  shall 
  for 
  a 
  moment 
  

   confine 
  our 
  attention, 
  the 
  Kinder 
  Scout 
  Grit 
  dips 
  below 
  a 
  series 
  of 
  

   sharply 
  chiselled 
  escarpments 
  formed 
  of 
  the 
  upper 
  members 
  of 
  the 
  

   Millstone-series, 
  ranging 
  in 
  a 
  nearly 
  true 
  north 
  and 
  south 
  direction 
  

   from 
  Glossop 
  to 
  Combs 
  Moss, 
  above 
  Buxton. 
  Between 
  the 
  Scout 
  

   Grit 
  and 
  the 
  Third 
  Grit 
  there 
  is 
  generally 
  a 
  rather 
  wide 
  valley, 
  

   formed 
  of 
  a 
  very 
  thick 
  series 
  of 
  shales, 
  surmounted 
  by 
  a 
  cliff; 
  then 
  

  

  