﻿422 
  

  

  MR. 
  L\ 
  P. 
  BICHARDS 
  Otf 
  THE 
  GRAVELS 
  AND 
  [Allg. 
  1 
  897, 
  

  

  § 
  3. 
  The 
  Glacial 
  (?) 
  or 
  Donnington 
  Gravel. 
  

  

  The 
  next 
  distinct 
  gravel 
  upon 
  the 
  south 
  side 
  of 
  the 
  valley 
  at 
  

   Newbury 
  is 
  the 
  ' 
  Terrace-gravel 
  '* 
  (3) 
  ; 
  its 
  upper 
  surface 
  is 
  about 
  

   260 
  feet 
  above 
  O.D. 
  

  

  On 
  the 
  north 
  side 
  of 
  the 
  town, 
  however, 
  there 
  is 
  a 
  deposit 
  of 
  

   loam 
  and 
  gravel, 
  occupying 
  in 
  section 
  AB 
  almost 
  the 
  same 
  level 
  

   as 
  the 
  terrace-gravel 
  does 
  on 
  the 
  south 
  side 
  of 
  AB, 
  but 
  rising 
  

   considerably 
  above 
  the 
  terrace-gravel 
  at 
  Donnington 
  Square, 
  and 
  

   extending 
  just 
  over 
  the 
  300-foot 
  contour 
  on 
  the 
  Bath 
  Eoad, 
  as 
  

   against 
  260 
  feet 
  in 
  the 
  terrace-gravel. 
  

  

  This 
  gravel 
  and 
  my 
  ' 
  Lower 
  Biver-gravel 
  ' 
  have 
  been 
  marked 
  on 
  

   Mr. 
  Bennett's 
  section 
  through 
  Newbury 
  (now 
  in 
  the 
  Town 
  Hall 
  at 
  

   Newbury) 
  as 
  ' 
  Reading 
  Beds.' 
  But 
  this 
  I 
  find 
  to 
  be 
  incorrect 
  ; 
  for 
  

   in 
  the 
  section 
  of 
  a 
  well 
  in 
  Greenham 
  Park, 
  440 
  feet 
  above 
  O.D., 
  the 
  

   Chalk 
  was 
  reached 
  at 
  217 
  feet 
  above 
  O.D., 
  and 
  the 
  lowest 
  layers 
  of 
  

   the 
  Reading 
  Beds 
  consisted 
  of 
  hard, 
  dark-green 
  sands, 
  with 
  a 
  few 
  

   iucluded 
  layers 
  of 
  flints, 
  succeeded 
  by 
  other 
  green 
  sands 
  and 
  dark 
  

   clays. 
  Following 
  the 
  long 
  section 
  AB, 
  it 
  will 
  be 
  seen 
  that 
  these 
  

   are 
  entirely 
  wanting 
  from 
  the 
  Great 
  Western 
  Railway 
  to 
  Don- 
  

   nington 
  Square. 
  A 
  green 
  sand 
  forms 
  the 
  base 
  of 
  the 
  terrace- 
  

   gravel, 
  skirted 
  by 
  the 
  railway 
  on 
  the 
  south 
  side 
  of 
  the 
  river, 
  and 
  

   this 
  may 
  belong 
  to 
  the 
  Reading 
  Beds 
  ; 
  but 
  north 
  of 
  this 
  the 
  river- 
  

   gravels 
  and 
  the 
  Donnington 
  Glacial 
  Drift 
  rest 
  immediately 
  upon 
  the 
  

   Chalk-with-flints. 
  

  

  Section 
  of 
  a 
  Well 
  in 
  Greenham 
  Parle 
  : 
  440 
  feet 
  above 
  O.D. 
  

  

  ft. 
  in. 
  

  

  12 
  

  

  0. 
  

  

  2 
  

  

  0. 
  

  

  4 
  

  

  0. 
  

  

  10 
  

  

  0. 
  

  

  7 
  

  

  0. 
  

  

  1 
  

  

  6. 
  

  

  4 
  

  

  6. 
  

  

  5 
  

  

  0. 
  

  

  1 
  

  

  2. 
  

  

  5 
  

  

  0. 
  

  

  2 
  ]0. 
  

  

  36 
  

  

  0. 
  

  

  

  6. 
  

  

  24 
  

  

  6. 
  

  

  4 
  

  

  0. 
  

  

  2 
  

  

  0. 
  

  

  15 
  

  

  0. 
  

  

  8 
  

  

  0. 
  

  

  15 
  

  

  0. 
  

  

  13 
  

  

  0. 
  

  

  4 
  

  

  0. 
  

  

  8 
  

  

  0. 
  

  

  1 
  

  

  0. 
  

  

  27 
  

  

  0. 
  

  

  223 
  

  

  Gravel 
  and 
  loam 
  (Southern 
  Drift). 
  

  

  Brown 
  loam. 
  

  

  Brown 
  sand, 
  with 
  water. 
  

  

  Brown 
  loam. 
  

  

  Blue 
  clay. 
  

  

  Black 
  pebbles. 
  

  

  Blue 
  sand, 
  little 
  water. 
  

  

  Dead 
  -blue 
  sand. 
  

  

  Hard 
  dark 
  stone. 
  

  

  Dark 
  -grey 
  sand. 
  

  

  Blue 
  sandy 
  clay. 
  

  

  London 
  Clay. 
  

  

  Black 
  pebbles. 
  

  

  Black 
  sandy 
  clay 
  ; 
  water 
  at 
  base. 
  

  

  Coloured 
  sand 
  and 
  clay. 
  

  

  Coloured 
  sand. 
  

  

  Light, 
  sharp, 
  brown 
  sand, 
  with 
  water. 
  

  

  Coloured 
  clay 
  and 
  sand. 
  

  

  Mottled 
  clay. 
  

  

  Green 
  sand 
  and 
  water. 
  

  

  Black 
  clay. 
  

  

  Hard 
  dark-green 
  sand. 
  

  

  Flints. 
  

  

  Hard 
  dark- 
  green 
  sand 
  and 
  flints. 
  

  

  Chalk 
  reached, 
  217 
  feet 
  O.D. 
  

  

  tc 
  

  

  W 
  

  

  > 
  E 
  

  

  