﻿132 
  

  

  PROCEEDINGS 
  OF 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  [Jan. 
  20, 
  

  

  side 
  of 
  the 
  valley, 
  the 
  drift 
  ascends 
  in 
  

   terraces 
  up 
  to 
  the 
  flanks 
  of 
  the 
  New 
  Red 
  

   Sandstone 
  and 
  Permian 
  hills 
  which 
  ulti- 
  

   mately 
  bound 
  it 
  on 
  each 
  side. 
  

  

  In 
  addition 
  to 
  the 
  drift 
  in 
  the 
  imme- 
  

   diate 
  neighbourhood 
  of 
  the 
  river, 
  nume- 
  

   rous 
  outlying 
  patches 
  occur 
  on 
  the 
  high 
  

   ground, 
  as 
  at 
  Ryden 
  Hill, 
  in 
  the 
  parish 
  

   of 
  Benthall, 
  and 
  near 
  the 
  " 
  Hill 
  Top," 
  

   Benthall, 
  Broseley 
  Churchyard, 
  Posen- 
  

   hall, 
  near 
  the 
  Deerleap, 
  and 
  Willey, 
  and 
  

   near 
  Much 
  Wenlock 
  on 
  the 
  west 
  side 
  of 
  

   the 
  Severn 
  ; 
  also 
  in 
  several 
  localities 
  on 
  

   the 
  east 
  side, 
  at 
  altitudes 
  of 
  from 
  300 
  to 
  

   600 
  feet 
  above 
  the 
  Severn, 
  and 
  from 
  400 
  

   to 
  700 
  feet 
  above 
  the 
  sea. 
  Mr. 
  C. 
  J. 
  

   Cooper, 
  Secretary 
  of 
  the 
  Severn 
  -Valley 
  

   Field-Club, 
  to 
  whom 
  I 
  am 
  indebted 
  for 
  

   much 
  information 
  relating 
  to 
  the 
  Bridg- 
  

   north 
  gravels, 
  has 
  also 
  pointed 
  out 
  to 
  me 
  

   a 
  patch 
  of 
  drift 
  at 
  Burton, 
  3^- 
  miles 
  to 
  

   the 
  west 
  of 
  Much 
  Wenlock, 
  and 
  800 
  feet 
  

   above 
  the 
  sea-level. 
  To 
  this 
  I 
  shall 
  pre- 
  

   sently 
  more 
  particularly 
  refer. 
  

  

  The 
  principal 
  mass 
  of 
  drift 
  occurs 
  at 
  

   Stre 
  thill, 
  a 
  rounded 
  hill 
  rising, 
  close 
  to 
  

   the 
  north 
  of 
  the 
  entrance 
  of 
  Coalbrook 
  

   Dale, 
  to 
  an 
  altitude 
  of 
  about 
  200 
  feet 
  

   above 
  the 
  River 
  Severn, 
  and 
  300 
  feet 
  

   above 
  the 
  sea. 
  The 
  section 
  of 
  its 
  upper 
  

   portion 
  has, 
  for 
  several 
  years, 
  been 
  ex- 
  

   posed 
  in 
  a 
  gravel-pit 
  on 
  its 
  north-east 
  

   side, 
  and 
  the 
  Coalbrook 
  Dale 
  Junction 
  

   Railway 
  has 
  recently 
  exposed 
  a 
  further 
  

   section 
  through 
  its 
  centre, 
  which, 
  toge- 
  

   ther 
  with 
  some 
  less 
  important 
  sections 
  

   on 
  the 
  west 
  side 
  of 
  the 
  river, 
  afford 
  the 
  

   unusual 
  opportunity 
  of 
  examining 
  200 
  

   feet 
  of 
  consecutive 
  drift- 
  strata. 
  The 
  

   sections 
  across 
  the 
  valley 
  of 
  the 
  Severn 
  

   will 
  explain 
  the 
  relative 
  position 
  of 
  the 
  

   several 
  masses 
  of 
  drift, 
  and 
  their 
  relation 
  

   in 
  position 
  to 
  older 
  formations. 
  

  

  The 
  base 
  and 
  summit 
  of 
  Strethill 
  con- 
  

   sist 
  of 
  clear 
  water-worn 
  sands 
  and 
  

   gravels, 
  separated 
  b3^ 
  a 
  bed 
  of 
  gravelly 
  

   clay 
  ; 
  the 
  first 
  60 
  feet 
  above 
  the 
  river 
  

   consists 
  of 
  thick 
  beds 
  of 
  remarkably 
  clean 
  

   sea-sand, 
  interstratified 
  with 
  water- 
  worn 
  

   pebble-beds, 
  which 
  are 
  exposed 
  for 
  a 
  

  

  

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