﻿262 
  PROCEEDINGS 
  OF 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  [Mar. 
  23, 
  

  

  further 
  south 
  a 
  few 
  feet 
  of 
  flagstone 
  and 
  sandy 
  shale 
  are 
  found 
  on 
  

   the 
  horizon 
  of 
  this 
  bed. 
  

  

  The 
  Rough 
  Rock 
  calls 
  for 
  no 
  particular 
  notice 
  : 
  it 
  is 
  the 
  usual 
  

   coarse, 
  crumbly 
  gritstone, 
  of 
  about 
  the 
  same 
  thickness 
  as 
  at 
  Buxton. 
  

   The 
  Coal-ineasures 
  of 
  the 
  Goldsitch 
  Basin 
  contain 
  the 
  following 
  

   series 
  of 
  coals 
  : 
  — 
  

  

  ft. 
  in. 
  ft. 
  in. 
  

  

  Coal, 
  — 
  Silver-seam 
  1 
  4 
  to 
  1 
  6 
  

  

  Measures 
  60 
  

  

  Coal, 
  — 
  Thin 
  seam 
  1 
  4 
  „ 
  1 
  6 
  

  

  Measures 
  40 
  

  

  Coal,— 
  Thick 
  seam 
  , 
  2 
  „ 
  2 
  3 
  

  

  Measures 
  60 
  

  

  Coal,— 
  Cannel 
  6 
  „ 
  2 
  

  

  Measures 
  10 
  

  

  Coal,— 
  Bassy 
  (bad) 
  4 
  „ 
  6 
  

  

  Sandstone 
  (Woodhead 
  Hill 
  

  

  Rock) 
  50 
  

  

  Measures 
  250 
  

  

  Coal,— 
  Thick 
  or 
  Big 
  seam 
  4 
  „ 
  6 
  

  

  Rough 
  Rock. 
  

  

  Of 
  these, 
  the 
  first 
  four 
  represent 
  most 
  likely 
  the 
  Gannister 
  and 
  

   its 
  companions 
  in 
  Lancashire, 
  while 
  the 
  Big 
  Seam 
  is 
  the 
  Feather- 
  

   edge 
  coal. 
  The 
  thicknesses 
  are 
  not 
  to 
  be 
  depended 
  on 
  ; 
  they 
  are 
  

   given 
  from 
  the 
  accounts 
  of 
  old 
  colliers. 
  

  

  g. 
  The 
  Biddutph 
  and 
  Rudyerd 
  Basins. 
  — 
  We 
  will 
  next 
  take 
  in 
  

   hand, 
  and 
  compare 
  with 
  the 
  normal 
  section, 
  the 
  grits 
  on 
  each 
  side 
  

   of 
  the 
  Biddulph 
  Trough, 
  and 
  in 
  the 
  Rudyerd 
  Basin. 
  

  

  Position 
  of 
  Bocks 
  at 
  the 
  surface. 
  — 
  The 
  section 
  (fig. 
  8) 
  has 
  been 
  drawn 
  

   across 
  these 
  basins, 
  and 
  shows 
  also 
  the 
  position 
  of 
  the 
  patches 
  of 
  

   Mountain 
  Limestone 
  which 
  come 
  to 
  light 
  at 
  Astbury 
  and 
  Mixon. 
  

   The 
  line 
  of 
  this 
  section 
  lies 
  about 
  three 
  miles 
  to 
  the 
  south 
  of 
  that 
  

   last 
  described 
  ; 
  it 
  has 
  the 
  same 
  geological 
  features, 
  and 
  crosses 
  nearly 
  

   the 
  same 
  series 
  of 
  beds, 
  except 
  that 
  in 
  the 
  Goyt 
  Trough 
  we 
  have 
  

   nothing 
  higher 
  than 
  Yoredale 
  Rocks. 
  

  

  Penological 
  details. 
  The 
  Grits 
  of 
  the 
  Rudyerd 
  Basin. 
  — 
  The 
  banks 
  

   of 
  the 
  pretty 
  reservoir 
  of 
  Rudj-erd 
  are 
  formed 
  of 
  the 
  fourth 
  bed. 
  

   The 
  rock 
  is 
  in 
  character 
  very 
  like 
  that 
  quarried 
  under 
  The 
  Roaches 
  : 
  

   a 
  hard, 
  close-grained, 
  red 
  grit, 
  rather 
  massive 
  ; 
  itwould 
  seem, 
  too, 
  for 
  

   a 
  while 
  to 
  increase 
  in 
  thickness, 
  but 
  it 
  soon 
  dwindles 
  down 
  again 
  ; 
  

   and 
  though 
  it 
  may 
  be 
  followed 
  along 
  the 
  eastern 
  outcrop 
  almost 
  as 
  

   far 
  south 
  as 
  Cheddleton, 
  no 
  traces 
  of 
  it 
  are 
  to 
  be 
  found 
  beyond 
  that 
  

   village. 
  On 
  the 
  west 
  side 
  of 
  the 
  basin 
  it 
  is 
  cut 
  off 
  by 
  a 
  fault, 
  up 
  to 
  

   which 
  it 
  keeps 
  a 
  good 
  thickness, 
  but 
  beyond 
  which 
  it 
  is 
  never 
  seen 
  

   again. 
  The 
  fifth 
  runs 
  in 
  the 
  shape 
  of 
  a 
  fine 
  flaggy 
  sandstone 
  on 
  

   either 
  side 
  of 
  the 
  basin, 
  and 
  seems 
  to 
  thin 
  away 
  at 
  last 
  beneath 
  the 
  

   outliers 
  of 
  New 
  Red 
  Sandstone 
  at 
  Rushton, 
  and 
  north 
  of 
  Leek. 
  Here, 
  

   then, 
  Ave 
  have 
  reached 
  a 
  point 
  at 
  which 
  the 
  thick 
  massive 
  Kinder 
  

   Scout 
  Grit, 
  after 
  having 
  passed 
  into 
  a 
  less 
  striking 
  gritstone, 
  and 
  

   then 
  into 
  a 
  fine 
  sandstone, 
  at 
  last 
  dies 
  out 
  altogether. 
  

  

  