﻿252 
  PROCEEDINGS 
  OF 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  [Mar. 
  23, 
  

  

  a 
  second 
  lesser 
  hollow 
  rising 
  into 
  the 
  cliff 
  of 
  the 
  second 
  grit 
  ; 
  then 
  

   another 
  still 
  smaller, 
  crowned 
  by 
  the 
  cliff 
  of 
  the 
  first 
  grit. 
  This 
  

   completes 
  the 
  series. 
  These 
  successive 
  stages 
  are 
  well 
  shown 
  along 
  

   the 
  flanks 
  of 
  Crown 
  Edge 
  and 
  Chinley 
  Hill, 
  the 
  latter 
  of 
  which 
  

   reaches 
  an 
  elevation 
  of 
  1493 
  feet. 
  

  

  Penological 
  details. 
  — 
  The 
  Kinder 
  Scout 
  Grit 
  undergoes 
  no 
  change 
  

   of 
  character 
  from 
  that 
  described 
  at 
  Saddleworth. 
  The 
  third 
  grit, 
  

   here 
  known 
  as 
  the 
  " 
  Simmondley 
  Rock," 
  becomes 
  very 
  massive 
  and 
  

   coarse 
  on 
  Matley 
  Moor, 
  and 
  is 
  surmounted 
  by 
  the 
  shales 
  with 
  the 
  

   same 
  coal-seam 
  (apparently) 
  that 
  occurs 
  at 
  Mossley. 
  The 
  second 
  

   grit 
  here 
  forms 
  a 
  distinct 
  escarpment, 
  and 
  is 
  extensively 
  quarried 
  

   for 
  flagstones 
  and 
  tiles 
  under 
  Chinley 
  Churn. 
  The 
  first 
  grit 
  becomes 
  

   thick 
  and 
  massive 
  ; 
  in 
  some 
  places, 
  as 
  at 
  Mellor 
  and 
  Aspinshaw, 
  

   containing 
  the 
  Feather 
  edge 
  Coal 
  ; 
  in 
  other 
  places, 
  as 
  at 
  Broadbottom 
  

   and 
  Crown 
  Edge, 
  this 
  seam 
  nowhere 
  appears. 
  The 
  thickness 
  of 
  the 
  

   series 
  is 
  greater 
  here 
  than 
  at 
  Staleybridge, 
  owing 
  to 
  the 
  increase 
  of 
  

   the 
  first 
  grit 
  and 
  the 
  underlying 
  shales, 
  and 
  may 
  be 
  estimated 
  at 
  

   2800 
  feet. 
  At 
  New 
  Mills 
  the 
  Rough 
  Rock 
  with 
  the 
  Featheredge 
  

   Coal, 
  and 
  some 
  of 
  the 
  inferior 
  beds, 
  rise 
  towards 
  the 
  west 
  on 
  the 
  

   opposite 
  side 
  of 
  the 
  trough, 
  and 
  at 
  Disley, 
  still 
  further 
  to 
  the 
  west, 
  

   are 
  thrown 
  down 
  by 
  the 
  anticlinal 
  fault 
  already 
  described. 
  From 
  

   Disley 
  westward 
  the 
  dip 
  is 
  steadily 
  west, 
  and 
  we 
  cross 
  the 
  full 
  series 
  

   of 
  the 
  Lower 
  Coal-measures, 
  which 
  form 
  the 
  hilly 
  tract 
  of 
  Lyme 
  

   Park, 
  and 
  then 
  reach 
  the 
  Poynton 
  Coal-field, 
  which 
  will 
  require 
  a 
  

   few 
  words 
  of 
  description. 
  

  

  The 
  eastern 
  boundary 
  of 
  the 
  Poynton 
  Coal-field 
  forms 
  the 
  arc 
  of 
  

   a 
  circle, 
  of 
  which 
  the 
  " 
  red 
  rock 
  fault" 
  is 
  the 
  chord. 
  It 
  is, 
  in 
  fact, 
  a 
  

   limb 
  of 
  the 
  great 
  Lancashire 
  Coal-field 
  projected 
  from 
  its 
  south- 
  

   eastern 
  extremity, 
  and 
  extends 
  from 
  OfFerton 
  Green 
  to 
  the 
  north 
  side 
  

   of 
  Stypherson 
  Park, 
  a 
  distance 
  of 
  about 
  five 
  miles 
  from 
  north 
  to 
  

   south. 
  At 
  its 
  broadest 
  part 
  it 
  is 
  about 
  two 
  miles 
  across. 
  Its 
  

   eastern 
  border 
  is 
  formed 
  by 
  the 
  outcrop 
  of 
  the 
  Redacre 
  Coal, 
  which 
  

   is 
  considered, 
  with 
  great 
  probability, 
  to 
  represent 
  the 
  Arley 
  Mine 
  of 
  

   Lancashire. 
  It 
  contains 
  several 
  valuable 
  coal-seams, 
  which 
  are 
  

   worked 
  at 
  Poynton 
  and 
  Norbury 
  collieries 
  ; 
  but 
  a 
  considerable 
  part 
  

   of 
  the 
  field 
  is 
  rendered 
  valueless 
  in 
  a 
  mineral 
  point 
  of 
  view 
  by 
  the 
  

   broken 
  character 
  of 
  the 
  strata. 
  

  

  In 
  this 
  district 
  one 
  or 
  two 
  seams 
  in 
  the 
  Lower 
  Coal-measures 
  have 
  

   been 
  extensively 
  worked 
  ; 
  the 
  principal 
  of 
  these 
  is 
  the 
  Bakestone 
  

   Dale 
  seam, 
  which 
  represents 
  the 
  "Lower 
  Yard" 
  Coal 
  (No. 
  5 
  of 
  the 
  

   series, 
  page 
  245). 
  Along 
  with 
  the 
  Gannister 
  Coal, 
  this 
  seam 
  is 
  worked 
  

   at 
  Disley, 
  New 
  Mills, 
  and 
  Whaley. 
  

  

  c. 
  The 
  Peak 
  District. 
  Position 
  of 
  Rocks 
  at 
  the 
  surface. 
  — 
  The 
  tabu- 
  

   lated 
  aspect 
  of 
  The 
  Peak 
  is 
  very 
  clearly 
  indicated 
  by 
  the 
  shading 
  in 
  

   the 
  Ordnance 
  Map 
  ; 
  and 
  its 
  structure 
  is 
  illustrated 
  in 
  the 
  general 
  

   section 
  above 
  (fig. 
  2). 
  This 
  hill, 
  which 
  may 
  aspire 
  to 
  the 
  character 
  

   of 
  a 
  mountain, 
  as 
  it 
  reaches 
  an 
  elevation 
  of 
  2000 
  feet, 
  forms 
  a 
  very 
  

   striking 
  and 
  bold 
  feature 
  from 
  almost 
  every 
  point 
  of 
  view. 
  It 
  is 
  

   somewhat 
  in 
  the 
  form 
  of 
  a 
  triangle, 
  lying 
  with 
  its 
  vertex 
  pointing 
  

   east, 
  in 
  the 
  direction 
  where 
  the 
  broad 
  valley 
  of 
  Edale 
  joins 
  the 
  nar- 
  

  

  